Five Tips For Better Registry Cleaner
Posted by Kevin Dan | Filed under Computers
Registry cleaners are very important for your computer. They can help you a lot as well as causing you harm. So you need to be very careful about the cleaner you are using in your computer. Here are five tips which will help you to do get safer and better service from any registry cleaner you use in your computer.
Tip one: Registry stores all the movement in the computer and that includes every movement of the mouse or every switch you press in the keyboard. Registry makes entries for all of these actions and if you do any of them while a cleaner scans your computer, it will be confused about the new entries. So it’s better if you leave your computer while the cleaner scans your system.
Tip two: After the scanning, if you find anything wrong, like a program is no longer running, you should not be worried. There are many cleaners which are not capable of detecting every error and detect a right program as an error. If you find something like this, you better restore the software files from the backup option of the cleaner. If there is no backup option in the cleaner, you can restore them from the Windows tool you can use for backup. But in that case, you must use the tool to back up the entire registry before you let the cleaner scans it.
Tip three: It’s better not to use a registry cleaner software frequently. Because the registry is not a place where you should deal with regularly and more importantly, the registry cleaners make noticeable amount of performance failure to your computer.
Tip four: you can use more than one registry cleaner at a time if you want to. Most of the registry cleaners are not capable of taking care of every kind of errors in the registry. Some of them are good for removal performance and some do better in detecting intruder like virus, malware or spyware. But you should not run them all at a time. Instead you better run them periodically.
Tip five: To choose for a better registry cleaner for your computer, you must not go for cheap software. There are many cleaners available in the market. Some of them are totally free. Some of them cost very low and some are very expensive. I am not telling that the expensive ones are the best, but you must be sure about the performance and quality before you go for a registry cleaner. Because a registry cleaner can do good to your computer, but it can also do a lot of harm for your computer. For example, many registry cleaning software carry malware and put in your registry. There are also many shiny advertisements about the registry cleaners in the internet among which most are worthless. They will show you popup advertisement telling you that you have a serious problem in the registry. Do not trust this pop ups and close it as soon as it shows in your screen.
Author is writing about Windows 7 Registry Cleaner and how to fix registry errors. More information can be gathered from the blog at Windows 7 Registry Cleaner.
Tags: browser, computer, Computers, computing, download, internet, IT, registry, registry cleaner, scan, software, windows, zdnet
How To Fight Back Against The Computer Spies
Posted by Evan Harris | Filed under Computers
Spying does not take place only in wartime and or politically tense regions. Nowadays, you can find spies and covert operations running undetected within your personal computer system as you use your computer and the Internet.
If you ever notice a suspicious slow down of your computer’s processing without any particular reason, or you are bombarded by unsolicited pop up ads that indiscriminately appear whether you are running a program or not, these symptoms may continue to happen despite checking your system and running your recently updated anti virus program to run diagnostics on your computer.
If you do not have preventive software installed, you will not be able to detect the real problem in your system: spyware and adware.
The term “adware” refers to unsolicited programs that usually come bundled with freeware or shareware. Yes, sometimes things that seem to be good to be true usually come with unwanted invisible strings attached. Companies usually pay freeware or shareware creators to be able to capitalize and prey on unsuspecting individuals who download these programs. Adware cause unsolicited pop up advertisements in your computer and in severe cases, adware causes pop up advertisements to pop up soon as you boot your system.
The term “spyware”, on the other hand, refers to something more covert and usually undetected in your system until you run an anti spyware program. Spyware is used exactly to spy on you. In relatively mild cases, spyware is used to track your Internet browsing habits so that the spyware can report your preferences to build a marketing profile. This means that as you go about your Internet business, you are under surveillance and your basic right to privacy is impinged upon.
In cases of serious computer infection, certain spyware are better labeled as malware, are used for criminal purposes and can steal keywords and other sensitive information based on your computer and Internet usage. For instance, malware can take note of your keystrokes or take note of your credit card number and other vital information that can be used to steal your identity and generally put your security at risk.It is said that 9 out 10 computers are infected with spyware and to make sure that you are not part of statistical majority, you need run an adware and spyware cleaner to detect unwanted security and privacy breach within your system.
Luckily, adware and spyware removal software is readily available and most will completely remove these unwanted programs from your computer. You must note however that some adware and spyware are intricately bundled within their parent programs that cleaning them out from your computer will inadvertently disable the legitimate programs they infect. This consequence is a necessary evil to clean your computer of unwanted adware and spyware. You should choose an adware and spyware cleaner that can also work proactively by preventing future accidental installation of these nuisances.
Software for fighting adware and spyware works like anti virus programs, except that these particular cleaners target adware and spyware.Considering the trouble adware and spyware creators take to ensure that extracting installed adware and spyware from your computer system will be difficult, the adage about an ounce of prevention being worth more than a pound of cure applies in this situation. Be sure to install a reliable and secure adware and spyware cleaner in your system to remove existing security and privacy risks as well as preventing future hassle.
The The writer of this article is a training consultant with Macresource Computer Solutions, a UK IT training company offering Microsoft Excel Classes in London and all over the UK.
Tags: computer software, Computers, software programs
Tips On How To Move Data From One Xbox 360 Hard DriveTo Another
Posted by Steve P Lobston | Filed under Computers
This article describes the right way to transfer the hard drive for xbox 360 using the Drive Transfer Kit to transfer all content from one hard drive to another
You will need :
An Xbox 360 console
Two Xbox 360 hard drives
Data transfer cable (included with the Xbox 360 Hard Drive Transfer Kit)
This may be included when you purchase the Xbox 360 Hard Drive
Data transfer software (included with the Xbox 360 Hard Drive Transfer Kit)
The Xbox 360 Hard Drive Transfer Kit transfers all content to another hard drive. Read the users guide which you get with the Xbox 360 Hard Drive Transfer Kit.
You can transfer all content from one Xbox 360 hard drive (this is called the “source”) to another Xbox 360 hard drive (this is called the “destination”). The data from the source hard drive overwrites the content on the destination hard drive.
Naturally content is only able to be moved to another hard drive so long as the destination hard drive is the same size or bigger than the source hard drive
When the transfer is complete, the content on the destination hard drive is going to be replaced with the content from the source hard drive. This data includes your saved games and Xbox LIVE downloads. After the transfer is finished, the content on the source hard disk is erased.
Film rentals
Movies you have rented on the source hard drive will not be available after the transfer. Make sure that you watch all Xbox LIVE Marketplace movie rentals prior to using the Hard Drive Transfer Kit.
Using the Hard Drive Transfer Kit
Warning with any transfer, there is a small risk that some or all your content might be lost during the transfer.
Only one hard drive can be connected to your Xbox 360 console at a time. The transfer cable cannot be used to connect multiple hard drives to your console at the same time.
To transfer all content from one hard drive to another
Turn off your Xbox 360 console with your current hard drive (the “source” drive) attached.
Disconnect all accessories from the console.
Switch on the console. Connect a controller and switch it on. You will have to use a controller during the content transfer.
Connect the transfer cable to the hard drive that you are moving content to (the “destination” hard drive).
Important The transfer cable connects to the destination hard drive in only one orientation. Do not force the connector on.
Connect the transfer cable to the destination hard drive in the orientation shown below.
Plug the other end of the transfer cable into the USB port on the back of your Xbox 360 console.
Important Do not plug the transfer cable into a USB port on the front of your Xbox 360 console.
Load the Xbox 360 Hard Drive Transfer Disc (included with the transfer kit) into your Xbox 360 console. Instructions will appear on the screen
The transfer process can take more than 60 minutes, depending on the amount of content on the source hard drive.
The Xbox Dashboard is not available during the content transfer.
If the transfer is interrupted for any reason, your data will stay on the source hard drive. You can restart the transfer process at any time until the transfer is finished.
To remove your Xbox 360 hard drive
1.Turn off your Xbox 360 console.
2.Locate the hard drive on the top of your console (or on the left side, according to how your console is positioned).
3.Press the release button on the hard drive.
4.Lift the hard drive away from the console.
To attach your hard drive
1.Turn off your Xbox 360 console.
2.Position the back of the hard drive against the back of the hard drive bay.
3.Push the front end of the hard drive down until it clicks in place.
Note If your console did not previously have a hard drive, you will need to remove the hard drive bay cover before attaching a hard drive.
If you are really looking at an XBOX 360 hard drive visit http://xbox360premium.net/xbox-360-hard-drive This useful website has information on all the models and the best prices on the internetAND you can purchase with 100% confidence.
Tags: Computers, gaming, hardware, xbox
How Training On Photoshop Elements Can Help Improve Your Photos
Posted by Joe Thomas | Filed under Computers
If you want to learn how to get the most out of your photos, the right Photoshop training for you is Adobe Photoshop Elements 5. Photoshop Elements lets you easily correct flaws and adjust color and lighting in digital photos; arrange your photos in layouts that let you set up Internet photo galleries created with Flash technology; and view all your videos and stills in one place. At a price around U.S. $100, Photoshop Elements is a great place to start if you’re interested in mastering the art of digital editing and compositing.
Perhaps you simply enjoy playing with video and photos on the Internet; Photoshop training can take your hobby to the level of professional excellence and quality. Online self-study courses with instructor-guided training are a tremendously effective and fun way to master Photoshop skills in a hurry. If you’re just getting into photography or videography, Photoshop training is the most powerful path to career success and personal fulfillment.
Adobe Photoshop Elements 5 provides the tools you need to correct, enhance, organize, and share your photographs. Photoshop Elements 5 training will introduce you to the interface or welcome screen, the browser that acts as the pathway into the whole package; the organizer, or file-management tool; and the editor, used to correct lighting, resize images, and remove red eye. Photoshop Elements 5 also lets you put together professional-quality slide shows and build digital scrapbooks.
One of the biggest problems that novice photographers face is color correction. By using the Adjust Color Curves tool, it’s easy to correct common color problems with Photoshop Elements 5. The amazing thing about Photoshop is how much it can do. I love to jump into a new program and feel my way around, experimenting to see what I can do. But without Photoshop training I quickly reach a barrier where my intuition and experience cannot help me from running up against the same problems over and over-I don’t know what to do when the color is wrong, the photo looks drab compared to colors in the photographed scene, or an exposure problem makes the photo look too dark or too light.
With Photoshop training you can learn everything you need to know to create professional images: how to create special effects, how to sharpen the contrast of your photos, and how to correct common problems like color halos and digital noise.
Author is a developer and trainer with OnSiteTrainingCourses.Coms, a UK IT training company offering Adobe Photoshop Classes at their central London training centre.
Tags: adobe, Computers, desktop publishing, graphics, information technology, photography, photoshop training
Spyware Removal Software For Beginners
Posted by Odessa Schlanger | Filed under 1
Some of us can remember when having a personal computer was not heard of. Now, it seems everyone has one or two floating around their homes. You can play games with people around the world, research a school project, or contact family if you do not want to talk on the phone. Would it not do you well to have spyware removal software to insure your electronic “buddy” stays healthy?
We do so much online now. We fall in love, do our shopping, do our banking, and there is always a chance that a programmer can take information from your personal computer and use your identity to steal all kinds of items. When you have spyware on your computer it can save you from this horrendous theft.
All of us, who have computers, need to have a warrior in place to guard against any predators to our systems. Pop ups come on at times depending on sites you visit. Yes, you can accidentally click on a site you do not intend to view. When this happens, sites mark you and then pop ups occur. You can make this cease if you have the right spyware.
Programs errors, dirty registries, trojans and worms can attack your computer at any time. Your email is not even immune to the harms which can come through the Internet. It makes no sense to wait until your computer crashes before you decide to get yourself some kind of protection.
Let me reason with you for a few minutes. Do you have vehicle insurance? Of course you do! The reason you purchase it is so if any kind of collision happens you will be covered to get your car repaired. You initially buy the coverage so that you have the help should you need it.
Another thing to think about is this: Have you purchased life insurance? If you have life insurance, what was the reason you bought it? You got it so your family will have the provisions they need when you die. They will be able to bear the expense of funeral costs and other things they may need. Do you understand now?
There are so many spyware removal systems available upon the Internet. Some you have to pay for and others are free. It is suggested that you browse around the Web and read what is listed on the various sites carefully. Make a choice that will work for your home office and do is as soon as possible. What are you waiting for?
Personal computers are a must when it comes to staying in touch with loved ones, hunting up information, or even playing with all those exciting online games. But, you need Spyware Removal Software for protection from spyware .
Tags: Computers, protection from spyware, software, spyware removal software
Recommended Free Online Games For You
Posted by Roy Tzayag | Filed under 1
The free online game topic is really intriguing. That’s why I’m writing game reviews from time to time to tell you of new and cool games, that are all, totally free!
free games are usually mottled because that is sort of the principle of the article, but when it comes to mixed games, that is simply a defining characteristic. These four games are varied in nature and in kind, thus offering a different challenge in each case.
The first game is Behind Golden Bars and features a simple gameplay that gets more convoluted as time passes. You control a red tetragon, and your mission is to avoid the lines when they turn golden. These multiply and change throughout the game, giving you a little time to move somewhere safe. Your fingers must move hastily enough to do this as many times as achievable - it can all be over in just a matter of seconds.
Climbing Ninja is a different kind of flash game, more action oriented. As a black warrior your goal is to visit and carry out all levels. This implies collecting a certain amount of coins (that will be converted into money that you can spend at the shop) and overcoming many deadly obstacles. The money that you earn (which will be saved even if you cannot complete the temple you are in) can be used to buy onigari, lives, or special techniques that will help you get more points. These abilities are activated by clicking the equivalent number key, as they appear at the left of the screen. While at the temple, your task is facilitated by some sort of rustic helicopters carrying banners with hints regarding the dodgy obstacles you are about to face. If you pay notice to them, you might even have a chance at making it a few more minutes.
Guitar Crazy Maniac Deluxe 2 is a different version of retro game favorite Guitar Hero. You decide on your own guitar (a Les Paul or a pink Stratocaster), set the level of proficiency (amateur or pro), and you start rocking your way through four or six different songs, depending on the level of difficulty. Each performance grants you award points, thus unlocking more guitars and songs that you can ultimately download as mp3 files, for your listening pleasure. Oddly enough, this game will probably be easier on keyboard players, since the guitar is controlled by means of the keyboard, but all in all it is an equal source of fun for all music fans.
Conclusively, we have Tilt. This is a sort of 3D board flash game, which makes it tricky in a finalize different way. You have to use your mouse in order to move the board so that the black ball gets into the blue circle; that is the target of the game. As you achieve levels, difficulty increases in many different ways: you get multiple black balls and different blue circles, dampening fields that affect the speed of the ball, holes that remove the balls from the game thus preventing you from finishing the level, and gravitation fields that must be worked around. The game requires both tactic and a toss of luck, for good luck.
Roy Tzayag invites you to and enjoy games on the Internet. visiting and reading this intriguing collection of free articles for fun.
Tags: browser, Computers, free, free games, games, online games, onlinegames
CCNA Exam Options
Posted by Bob Marshall | Filed under 1
There are two options available to you to achieve your Cisco Certified Network Administrator (CCNA) certification. The first option is to take the single CCNA exam. Since this was too overwhelming to many CCNA candidates, Cisco created a second option for students to break the Cisco CCNA exam into two separate exams. In doing so, Cisco created a new entry level certification called Cisco Certified Entry Networking Technician (CCENT). This second option will be covered in detail later in this article as will be the three Specialized CCNA certifications.
Single Exam Option - CCNA exam 640-802 The current version of the CCNA exam is 640-802 and was last updated in November of 2007. Cisco seems to have a history of updating this exam approximately every three years. Coincidentally that is also the amount of time your Cisco CCNA certification is valid. So every three years, you must update your Cisco certifications according to the policies of Cisco at that time. This is one of the reasons why a Cisco certification is more valuable than many other IT certifications. By requiring you to recertify every three years, it ensures you are kept up to date with the quickly changing technologies in the IT field. The exam is 90 minutes in length and can be any where from 45 to 55 questions. There are 7 types of questions you may see are as follows:
Exam Question Formats # Single answer multiple choice -These are multiple choice questions where there is only one correct answer. A question will be posed, and a radio button will allow the user to select the proper answer to the question. # Multiple answer multiple choice -These are multiple choice questions where there are multiple correct answers. A question will be posed, and checkboxes will allow the user to select the proper answer to the question. # Drag and Drop (DND) -A green list of options will be provided on the left side of the screen, prompting the user to drag each of these to the correct yellow category box on the right side. The items can be removed from the chosen category and rearranged before submitting a final answer using the Submit button. # Fill in the Blank -The user will fill in the correct answer to a question or complete an existing sentence, making an accurate statement. # Router Simulation -Individual real-world scenarios are given, and the user is prompted to negotiate the proper network arrangement or perform the functions necessary using a simulated hyperterminal screen. # Testlet -The user is provided with a real-world scenario, and 3 or more questions are posed with regard to the scenario given. # Simlet -This is similar to a testlet question, however each sub-question is offered in the form of a router simulation.
Cisco CCNA 640-802 Exam Topics Describe how a network works # Describe the purpose and functions of various network devices # Select the components required to meet a network specification # Use the OSI and TCP/IP models and their associated protocols to explain how data flows in a network # Describe common networked applications including web applications # Describe the purpose and basic operation of the protocols in the OSI and TCP models # Describe the impact of applications (Voice Over IP and Video Over IP) on a network # Interpret network diagrams # Determine the path between two hosts across a network # Describe the components required for network and Internet communications # Identify and correct common network problems at layers 1, 2, 3 and 7 using a layered model approach # Differentiate between LAN/WAN operation and features
Configure, verify and troubleshoot a switch with VLANs and interswitch communications # Select the appropriate media, cables, ports, and connectors to connect switches to other network devices and hosts # Explain the technology and media access control method for Ethernet networks # Explain network segmentation and basic traffic management concepts # Explain basic switching concepts and the operation of Cisco switches # Perform and verify initial switch configuration tasks including remote access management # Verify network status and switch operation using basic utilities (including: ping, traceroute, telnet, SSH, arp, ipconfig), SHOW & DEBUG commands # Identify, prescribe, and resolve common switched network media issues, configuration issues, auto negotiation, and switch hardware failures # Describe enhanced switching technologies (including: VTP, RSTP, VLAN, PVSTP, 802.1q) # Describe how VLANs create logically separate networks and the need for routing between them # Configure, verify, and troubleshoot VLANs # Configure, verify, and troubleshoot trunking on Cisco switches # Configure, verify, and troubleshoot interVLAN routing # Configure, verify, and troubleshoot VTP # Configure, verify, and troubleshoot RSTP operation # Interpret the output of various show and debug commands to verify the operational status of a Cisco switched network. # Implement basic switch security (including: port security, trunk access, management vlan other than vlan1, etc.)
Implement an IP addressing scheme and IP Services to meet network requirements in a medium-size Enterprise branch office network. # Describe the operation and benefits of using private and public IP addressing # Explain the operation and benefits of using DHCP and DNS # Configure, verify and troubleshoot DHCP and DNS operation on a router.(including: CLI/SDM) # Implement static and dynamic addressing services for hosts in a LAN environment # Calculate and apply an addressing scheme including VLSM IP addressing design to a network # Determine the appropriate classless addressing scheme using VLSM and summarization to satisfy addressing requirements in a LAN/WAN environment # Describe the technological requirements for running IPv6 in conjunction with IPv4 (including: protocols, dual stack, tunneling, etc). # Describe IPv6 addresses # Identify and correct common problems associated with IP addressing and host configurations Configure, verify, and troubleshoot basic router operation and routing on Cisco devices
# Describe basic routing concepts (including: packet forwarding, router lookup process) # Describe the operation of Cisco routers (including: router bootup process, POST, router components) # Select the appropriate media, cables, ports, and connectors to connect routers to other network devices and hosts # Configure, verify, and troubleshoot RIPv2 # Access and utilize the router to set basic parameters.(including: CLI/SDM) # Connect, configure, and verify operation status of a device interface # Verify device configuration and network connectivity using ping, traceroute, telnet, SSH or other utilities # Perform and verify routing configuration tasks for a static or default route given specific routing requirements # Manage IOS configuration files. (including: save, edit, upgrade, restore) # Manage Cisco IOS. # Compare and contrast methods of routing and routing protocols # Configure, verify, and troubleshoot OSPF # Configure, verify, and troubleshoot EIGRP # Verify network connectivity (including: using ping, traceroute, and telnet or SSH) # Troubleshoot routing issues # Verify router hardware and software operation using SHOW & DEBUG commands. # Implement basic router security Explain and select the appropriate administrative tasks required for a WLAN
# Describe standards associated with wireless media (including: IEEE WI-FI Alliance, ITU/FCC) # Identify and describe the purpose of the components in a small wireless network. (Including: SSID, BSS, ESS) # Identify the basic parameters to configure on a wireless network to ensure that devices connect to the correct access point # Compare and contrast wireless security features and capabilities of WPA security (including: open, WEP, WPA-1/2) # Identify common issues with implementing wireless networks. (Including: Interface, missconfiguration) Identify security threats to a network and describe general methods to mitigate those threats
# Describe today’s increasing network security threats and explain the need to implement a comprehensive security policy to mitigate the threats # Explain general methods to mitigate common security threats to network devices, hosts, and applications # Describe the functions of common security appliances and applications # Describe security recommended practices including initial steps to secure network devices Implement, verify, and troubleshoot NAT and ACLs in a medium-size Enterprise branch office network.
# Describe the purpose and types of ACLs # Configure and apply ACLs based on network filtering requirements.(including: CLI/SDM) # Configure and apply an ACLs to limit telnet and SSH access to the router using (including: SDM/CLI) # Verify and monitor ACLs in a network environment # Troubleshoot ACL issues # Explain the basic operation of NAT # Configure NAT for given network requirements using (including: CLI/SDM) # Troubleshoot NAT issues Implement and verify WAN links
# Describe different methods for connecting to a WAN # Configure and verify a basic WAN serial connection # Configure and verify Frame Relay on Cisco routers # Troubleshoot WAN implementation issues # Describe VPN technology (including: importance, benefits, role, impact, components) # Configure and verify a PPP connection between Cisco routers
Two Exam Option - ICND1 640-822 & ICND2 640-816 As previously mentioned, the extensive amount of material covered in the single CCNA exam is too overwhelming for some exam takers. Thus Cisco provides an option to break the exam into two sittings. This has been speculated was in response to the high failure rate on the CCNA exam. Thus again illustrating why it is one of the most widely respected entry level IT certifications.
The first sitting is for the Interconnecting Cisco Networking Devices Part 1 (ICND1) 640-822 exam. Upon successfully completing this exam, you will have earned Cisco’s newest entry level certification, the Cisco Certified Entry Networking Technician (CCENT). This exam is 90 minutes in length and will cover 40 to 50 questions. You will encounter the same 7 question formats as you could see on the CCNA exam so there is no need to repeat them here again. Noteworthy for those preparing for the exam is which topics are covered on the ICND1 and what topics are covered on the ICND2 exam. Accordingly, we have provided the break down of which topics are covered in each exam below.
ICND1 Exam Topics # Describe how networks function, identifying major components, function of network components and the Open System Interconnection (OSI) reference model. # Using the host-to-host packet delivery process, describe issues related to increasing traffic on an Ethernet LAN and identify switched LAN technology solutions to Ethernet networking issues. # Describes the reasons for extending the reach of a LAN and the methods that can be used with a focus on RF wireless access. # Describes the reasons for connecting networks with routers and how routed networks transmit data through networks using TCP / IP. # Describe the function of Wide Area Networks (WANs), the major devices of WANs, and configure PPP encapsulation, static and dynamic routing, PAT and RIP routing. # Use the command-line interface to discover neighbors on the network and managing the routers startup and configuration.
The second sitting is for the Interconnecting Cisco Networking Devices Part 2 (ICND2) 640-816 exam. This exam is 90 minutes in length and will cover 40 to 50 questions. You will encounter the same 7 question formats as you could see on the CCNA exam so there is no need to repeat them here again. Upon successfully completing this second exam, you will have earned your Cisco Certified Network Administrator (CCNA) certification.
ICND2 Exam Topics # Review how to configure and troubleshoot a small network. # Expand the switched network from a small LAN to a medium-sized LAN with multiple switches, supporting VLANs, trunking, and spanning tree. # Describe routing concepts as they apply to a medium-sized network and discuss considerations when implementing routing on the network. # Configure, verify, and troubleshoot OSPF. # Configure, verify, and troubleshoot EIGRP. # Determine how to apply ACLs based on network requirements, and to configure, verify, and troubleshoot ACLs on a medium-sized network. # Describe when to use NAT or PAT on a medium-sized network, and configure NAT or PAT on routers. # Identify and implement the appropriate WAN technology based on network requirements.
Advanced CCNA Certifications Once you achieve your CCNA certification, you have many options open to you in the Cisco world. In 2008 Cisco introduced three advanced CCNA certifications which focused on specialization in different technologies. Obtaining your CCNA is a perquisite for any of these advanced CCNA certifications. Each is obtained by completing one additional exam. These three certifications are as follows:
CCNA Voice which is obtained by completing the 640-460 or 642-436 exam. This exam validates associate-level knowledge and skills required to administer a voice network. Focusing on the required skill set for specialized job roles in voice technologies such as voice technologies administrator, voice engineer, and voice manager. It validates skills in VoIP technologies such as IP PBX, IP telephony, handset, call control, and voicemail solutions.
CCNA Security certification which is obtained by completing the 640-553 exam. This exam validates knowledge and skills required to secure Cisco networks. With a CCNA Security certification, a administrator demonstrates the skills required to develop a security infrastructure, recognize threats and vulnerabilities to networks, and mitigate security threats. The CCNA Security exam puts emphasizes on core security technologies, the installation, troubleshooting and monitoring of network devices to maintain integrity, confidentiality and availability of data and devices, and competency in the technologies that Cisco uses in its security structure.
CCNA Wireless certification which is obtained by completing the 640-721 exam. This exam validates associate-level knowledge and skills to configure, implement and support of wireless LANs, specifically those networks using Cisco equipment. With a CCNA Wireless certification, administrators can support a basic wireless network on a Cisco WLAN in a SMB to enterprise network. The CCNA Wireless exam includes information and practice activities to prepare them for configuring, monitoring and troubleshooting basic tasks of a Cisco WLAN in SMB and Enterprise networks.
Go to CiscoKits for your free Cisco Certification training. Cisco CCNA,CCNP,and CCIE training along with many options for Cisco home lab kits! This and other unique content ‘ccna voice’ articles are available with free reprint rights.
Tags: Computers
A Bit About Frame Relay
Posted by Bob Marshall | Filed under 1
We hope you found this Cisco certification article helpful. We pride ourselves on not only providing top notch Cisco CCNA exam information, but also providing you with the real world Cisco CCNA skills to advance in your networking career.
Frame Relay Overview
In preparation of our CCNA exam, we want to make sure we cover the various concepts that we could see on our Cisco CCNA exam. So to assist you, below we will discuss Frame Relay Overview.
Frame Relay is a connection-oriented Layer 2 protocol that allows several data connections(called virtual circuits) to be multiplexed onto a single physical link. Frame Relay relies on upper-layer protocols for error correction. Frame Relay specifies only the connection between a router and a service provider’s local access switching equipment. The data transmission within the service provider’s Frame Relay cloud is not specified. A connection identifier is used to map packets to outbound ports on the service provider’s switch. When the switch receives a frame, a lookup table is used to map the frame to the correct outbound port. The entire path to the destination is determined before the frame is sent.
Frame Relay Stack
Most Frame Relay functions exist at the lower two layers of the OSI Reference Model. Frame Relay is supported on the same physical serial connections that support point-to-point connections. Cisco routers support the following serial connections: EIA/TIA-232, EIA/TIA-449, V.35, X.21, EIA/TIA-530. Upper-layer information (such as IP data) is encapsulated by Frame Relay and is transmitted over the link.
Frame Relay Terms
BECN (Backward Explicit Congestion Notification)-A message sent to a source router when a Frame Relay switch recognizes congestion in the network. A BECN message requests a reduced data transmission rate.
CIR (Committed Information Rate)-The minimum guaranteed data transfer rate agreed to by the Frame Relay switch.
DLCI (Data Link Connection Identifier)-Identifies the logical circuit between the router and the Frame Relay switch.
FECN (Forward Explicit Congestion Notification)-A message sent to a destination device when a Frame Relay switch senses congestion in the network.
Inverse ARP-Routers use Inverse ARP to discover the network address of a device associated with a VC.
LMI (Local Management Interface)-A signaling standard used to manage the connection between the router and the Frame Relay switch. LMIs track and manage keepalive mechanisms, multicast messages, and status. LMI can be configured (in Cisco IOS 11.2 and later), but routers can autosense LMI types by sending a status request to the Frame Relay switch. The router configures itself to match the LMI type response. The three types of LMIs supported by Cisco Frame Relay switches are Cisco (developed by Cisco, StrataCom, Northern Telecom, and DEC), ansi Annex D (ANSI standard T1.617), and q933a (ITU-T Q.933 Annex A).
VC (virtual circuit)-A logical circuit between two network devices. A VC can be permanent (PVC) or switched (SVC). PVCs save bandwidth (there is no circuit establishment or teardown) but can be expensive. SVCs are established on-demand and are torn down when transmission is complete. VC status can be active, inactive, or deleted.
Dynamic Mapping with Inverse ARP
To correctly route packets, each DLCI must be mapped to a nexthop address. These addresses can be dynamically mapped using Inverse ARP or can be manually configured. After the address is mapped, it is stored in the router’s Frame Relay map table.
LMI Signaling Process 1 The router connects to a Frame Relay switch through a channel service unit/data service unit (CSU/DSU). 2 The router sends a VC status inquiry to the Frame Relay switch. 3 The switch responds with a status message that includes the DLCI’s information for the usable PVCs. 4 The router advertises itself by sending an Inverse ARP to each active DLCI. 5 The routers create map entries with the local DLCI and network-layer address of the remote routers. Static maps must be configured if Inverse ARP is not supported. 6 Inverse ARP messages are sent every 60 seconds. 7 LMI information is exchanged every 10 seconds.
Frame Relay Overview Summary
Frame Relay is a connection-oriented Layer 2 protocol that allows several data connections (VCs) to be multiplexed onto a single physical link.
Cisco routers support Frame Relay on the following types of serial connections: EIA/TIA-232, EIA/TIA-449, V.35, X.21, and EIA/TIA-530.
Local DLCI addresses can be dynamically mapped using Inverse ARP or manually configured using static Frame Relay maps.
Local Management Interface (LMI) signaling is used by Frame Relay switches to manage connections and maintain status between the devices. The supported LMI types are cisco, ansi, and q933a.
Go to CiscoKits for your free Cisco Certification training. Cisco CCNA, CCNP, and CCIE training along with many options for Cisco home lab kits! Click here to get your own unique version of this article with free reprint rights.
Tags: 640-460, CCIE, CCNA, ccna certification, ccna exam, ccna kit, ccna voice, CCNP, cisco, cisco ccna training, cisco certification, Computers
Want To Know Where To Find The Hot Laptop Deals?
Posted by Mark Shield | Filed under 1
Presently e-commerce site has taken over the whole world of commerce. Thus it won’t be incorrect to say that best place to purchase a laptop is hot laptop deals websites. So welcome to the sizzling world of best deals on laptops. These websites have got it all. They are well versed with all latest know how and have a strong proficiency in electronics. Thus such websites can truly direct you to pick the finest product as these websites get you the best laptop computers deal.
These websites make laptop shopping far more easy then you can ever see in your mind’s eye. They sort the best and most compatible product available in the national and international market and bring together all the information in a very straightforward and comprehensive style. These laptop best deals websites are like biggest bargain shopping zone. They keep the track on the online stores, newspapers, magazines and store flyers for the top deals, free stuff, sale, best price, offers and discounts. This indeed helps you in making a right decision by comparing an assortment of products and offers. Plus door step delivery and insurance with several options of payments make online-shopping far more pleasurable experience.
* Hot laptop deals: These hot laptop deals websites is an answer to your entire problem. In return these websites need yours little attention. So please check them frequently in order to know “which know-how is selling like hot cakes” and “which has been shown the doors”. As one thing which is constant is change and technology changes every minute in order to evolve for better. So keep yourself updated with the laptops best deals.
* Minimizing cost: These websites offer the best and unmatched price on the laptops as compared to market state of affairs and the prime reason is such websites hold close association with suppliers and various dealers of leading brands. As there are many best deals on laptop computers.
These websites frequently hold ‘limited time’ special offers and promotions. Such promotions can contain free hardware upgrades, free software upgrades, voucher codes, discounts and/or free gifts with your order. Hot deals websites keep updating itself regularly with such promotional and other offers. If you register yourself with them, they will regularly give you an email alert. Thus you won’t miss on any free upgrades, gifts, discounts or whatever is latest in the town.
In spite of all the advantages of these great laptop deals, hot deals websites, there is one little difficulty. Major retailers provide customers with various discount and combo offers. Online shopping is always far more convenient in contrast to running around those computer stores and showrooms to look out for laptop cheap deals. Also, online shopping helps you save lot of time, money and efforts if you decide to look out for the laptops best deals online.
So, gear up and look out for the hot laptop deals on the deals website and bring one for yourself to half your efforts and double your efficiency.
Find hot laptop deals online at 99HotDeals. This is surely one of the best hot deals sites online. Get a totally unique version of this article from our article submission service
Tags: best deals on laptop computers, best deals on laptops, best laptop computers deal, Computers, great laptop deals, hot laptop deals, laptop cheap deals
Speedily And Straightforwardly Protect Yourself From Spyware
Posted by Albert J. Swizer | Filed under Computers
Most everybody today is connected to the Internet. And as such, most of us are aware of something called spyware, and probably realize that it is a bad thing that we must protect ourselves against. But how exactly do we do that? In this article I’ll go over the basics, so you’ll know exactly what to do to protect yourself.
The general description of spyware is any software that gets installed on your computer for the purposes of secretly collecting information. Many different kinds of spyware exist for many different purposes and reasons. Basically, they all involve stealing your personal information that you would rather keep secret. Spyware can quickly slow your computer down to a crawl, and sometimes make connecting to the Internet impossible.
One particular application of spyware is a keylogger program. These software programs are designed to record every thing you type. Anonymous third parties can use them, but also parents and bosses can use them if they want to monitor exactly what is being typed on a particular computer. One bad way people can use a keylogger program is to steal your passwords or other sensitive information, like your credit card numbers, or your social security numbers.
Different kinds of spyware will record your Internet surfing preferences. The web sites you visit regularly, the information you routinely type in when doing a Google search, and other information. Primarily for advertising, these programs collect information that can be used to help sell you stuff more effectively. These can severely slow down your computer, and sometimes make connecting to the Internet impossible.
Just as people and organizations create these malicious programs, there are also people and organizations that create defensive programs that you can use to protect yourself. These both protect your computer from having spyware installed in the first place, as well as routinely scanning your machine to detect and remove spyware that has already been installed.
In this day and age, it is imperative to have some kind of anti-spyware software installed on your computer. And as spyware is becoming increasingly harder to detect, it is important to choose a robust anti-spyware program that will continuously improve it’s ability to both protect your computer, and remove any current infections. Most decent anti-spyware programs come with frequent updates, which are needed to stay one step ahead of the bad guys. Your data, and privacy are extremely important, and obviously protecting them is a high priority for you.
To simply keep your computer safe from terrible viruses and be taught the simple and effortless spyware adware removal, visit the spyware adware removal page today.
Tags: adware, computer, computer virus, Computers, internet, malware, spyware
