Chris Bryant, CCIE (TM) #12933, has been active in the Cisco certification community for years. He worked his way up from the CCNA to the CCIE, and knows what CCNA and CCNP candidates need to know to be effective on the job and in the exam room. He is the owner of , where he sells his popular CCNA and CCNP study aids, including his unique Flash Card Books. He also teaches CCNA and CCNP courses to small groups of exam candidates, ensuring they each receive the individual attention they deserve. Classes are offered over the Internet and in person in select cities. Chris has custom-written the Study Guide and Lab Workbook used in each course - no third-party training materials or simulators are used. You're invited to visit our site and check out our CCNA and CCNP Courses, Flash Card Books, and to sign up for our weekly newsletter written personally by Chris. Chris is always glad to hear from Cisco certification candidates at .
ARP And Proxy ARP Explained In yesterday's Network+ tutorial, we talked about the importance of Address Resolution Protocol (ARP) in today's networks. A host PC must have the MAC and IP addresses of a remote host in order to send data to that remote host, and it's ARP that allows the local host to request the remost host to send the local host its MAC address through an ARP Request.The ARP Request is a layer two broadcast,...... Similar Editorial : by narenverma. | Source : Wireless Network Range
Network+ Exam Tutorial: Network Interface Cards (NICs) Part of the challenge of passing the Network+ exam is learning about all the different types of hardware a network requires. Today we’ll take a look at a vital part of network connectivity, the Network Interface Card (NIC, pronounced “nick”).The NIC is the device, or card, that gives the host a physical connection to the network. The NIC is generally an internal device, but one that...... Similar Editorial : by Chris Bryant. | Source : Wireless Network Range
DHCP And DHCP Relay Agents As a CompTIA Network+ exam candidate, you’re probably familiar with DHCP – but just in case, we’re going to review DHCP basics here and then go into a discussion of DHCP Relay Agents.When it comes to assigning an IP address to all the PCs on our network, along with their network mask, DNS server location, and more, we've got two choices on how to do it:Go to every workstation and configure the...... Similar Editorial : by Lisa Silverman. | Source : Wireless Network Range
Creating A Network Baseline The first thing we've got to do in order to document our network is to create a network baseline. After all, if we don't know our goals, we can't accomplish them. A baseline is really a "network snapshot", a picture of our network devices and their performance - which also helps us spot issues before they happen.Every network has its "breaking point", the point at which it can no...... Similar Editorial : by R G Srinivasan. | Source : Wireless Network Range
VLANs,SYN Attacks And More! Let’s test your knowledge of important topics such as SYN attacks and VLANs for your Cisco CCNA, CCNP, and CCENT exams, as well as the CompTIA Security+ and Network+ certification exams!CCNA / CCENT / CompTIA Network+ Certification:Host A and Host B are in the same VLAN. Host C and Host D are in a different VLAN. Host A sends a broadcast. How many other hosts will receive it?A. ZeroB. OneC. TwoD....... Source : Best Computer Virus Protection
Configuring PPP Callback You may run into situations where a router in a remote location needs to dial in to a central router, but the toll charges are much higher if the remote router makes the call. This scenario is perfect for PPP Callback, where the callback client places a call to a callback server, authentication takes place, and the server then hangs up on the client! This ensures that the client...... Similar Editorial : by Kristen. | Source : Wireless Network Range
Testing ISDN Links Without Pings To earn your Cisco CCNA and CCNP certifications, you've got to master ISDN - and despite what some people say, there's still a lot of ISDN out there that needs to be supported. And when it comes to troubleshooting ISDN, there's a lot to look at. Is the correct ISDN switchtype configured? Are the dialer map statements correct? What about the dialer-group and dialer-list commands?...... Similar Editorial : by Chris Bryant, CCIE #12933. | Source : Wireless Network Range
Frame Relay BECNs And FECNs BECNs and FECNs aren't just important to know for your Cisco CCNA and CCNP certification exams - they're an important part of detecting congestion on a Frame Relay network and allowing the network to dynamically adjust its transmission rate when congestion is encountered.The Forward Explicit Congestion Notification (FECN, pronounced "feckon") bit is set to zero by default, and will be set to 1 if...... Similar Editorial : by Christian Jacobsen. | Source : Wireless Network Range
Frame Relay Encapsulation Types When you're studying to pass the Cisco CCNA and CCNP certification exams, you quickly learn that there's always something else to learn. (You'll really pick up on this in your CCIE studies, trust me!) Today we'll take a look at an often-overlooked topic in Frame Relay, the encapsulation type. You don't exactly change this on a daily basis in production networks (not if you want...... Similar Editorial : by David Johnson. | Source : Wireless Network Range
Same Command, Different Results As a CCNA or CCNP, one thing you've got to get used to is that change is constant. Cisco regularly issues new IOS versions, not to mention the many different kinds of hardware they produce! While it's always nice to have "the latest and the greatest" when it comes to routers, switches, firewalls, etc., we have to be prepared for the fact that not all our clients are going to have that latest and...... Source : Wireless Network Range
Frame Relay Subinterfaces And Split Horizon Earning your Cisco CCNA and CCNP is a tough proposition, and part of that is the fact that you quickly learn that there’s usually more than one way to do things with Cisco routers – and while that’s generally a good thing, you better know the ins and outs of all options when it comes to test day and working on production networks. Working with Frame Relay subinterfaces and split horizon is...... Similar Editorial : by Konstantin Goudkov. | Source : Wireless Network Range
Cisco / Microsoft Computer Certification I was reading The Big Moo: Stop Trying To Be Perfect and Start Being Remarkable this morning, and I’d recommend a copy of this to anyone who wants to improve their career and their future. And that’s all of us, right? There was one particular line that really stood out to me: Betting on change is always the safest bet available. That describes life perfectly, but it also describes a career in...... Similar Editorial : by Chris Bryant, CCIE #12933. | Source : Microsoft Office Student Edition
Troubleshooting EIGRP Part of earning your CCNA and CCNP - especially passing the difficult CIT exam - is becoming a master network troubleshooter. Today, we'll take a look at troubleshooting EIGRP and spotting common errors. Most adjacency issues are easily resolved - mistyped IP address, bad wildcard mask in the neighbor statement, mistyped EIGRP AS number, and so forth. You know the AS number has to match...... Similar Editorial : by Barry Shultz. | Source : Wireless Network Range
The Config Register And Password Recovery Whether you're preparing for the CCNA certification exam or not, you must be prepared for the following question:"Hey, I reloaded this router and it wants an enable password. Do you know it?"Because if you don't, and there's no one available who does, you need to perform a password recovery technique on the router - without erasing the current configuration. This involves...... Similar Editorial : by Hans Peter Oswald. | Source : Wireless Network Problems
What Is Packet Switching? Cisco CCNA certification exam training means you've got to learn a lot of new terms, and some of them can be a little confusing at first. To pass this tough certification exam, one term you definitely need to understand is packet switching. The first question, of course, is "What is packet switching in the first place?" Let's define this term in today's Cisco CCNA exam prep...... Similar Editorial : by Matt Colyer. | Source : Wireless Network Problems
