OSI for CCNA Layer 5: Session
As a certified CCNA, you'll work in communications between applications. Some applications need to open logical communication channels between the computer hosts. Logical communication channels [more…]
OSI for CCNA Layer 4: Transport
On the CCNA exam, you'll work with hosts. The transport layer manages the transport of data between two hosts communicating over a network. In a nutshell, the transport layer does the following: [more…]
CCNA All-in-One Certification For Dummies Cheat Sheet
The CCNA exam requires mastery of the OSI reference model. The model is designed in seven functional layers. Each layer has a precise mission, and each layer works fairly independently of the upper and [more…]
Basic Switch Commands to Remember for the CCENT Certification Exam
This section outlines some of the popular commands you use on a Cisco switch for the CCENT certification exam. Most of the basic router commands, such as setting passwords and banners, work on the switch [more…]
Troubleshooting Commands for the CCENT Certification Exam
When problems arise on Cisco devices, there are a number of show commands you can use to help identify what the problem is. The following table lists popular [more…]
Security Best Practices for the CCENT Certification Exam
One of the most important skills to have as a CCENT is the capability of implementing basic security practices on your Cisco devices. The following are some key points to remember about securing devices [more…]
OSI Model for the CCENT Certification Exam
The CCENT certification tests you heavily on the OSI model and the different protocols and devices that run at each layer of the OSI model. The following table reviews the OSI model by giving you a description [more…]
Cisco IOS Basics for the CCENT Certification Exam
The CCENT certification exam will test you on the basics of the Cisco Internetwork Operating System (IOS) and how to configure the IOS. The following are some key points that summarize the IOS basics to [more…]
Configuring Users and Passwords for the CCENT Certification Exam
The CCENT certification exam will test you on basic configuration of the Cisco IOS, including setting passwords and creating users. The following are some key points that summarize configuring passwords [more…]
Configuring Network Services for the CCENT Certification Exam
This section reviews popular commands used when configuring a Cisco device for name resolution, DHCP services, and NAT. You'll need to know these for the CCENT Certification exam. [more…]
Configuring Interfaces for the CCENT Certification Exam
The CCENT certification exam requires you to know how to configure basic settings on the router, such as the hostname and the interfaces. The following commands review those configuration tasks. [more…]
Configuring Routing for the CCENT Certification Exam
Routing protocols will certainly come up on your CCENT certification exam. This section reviews popular commands that deal with routing and routing protocols, such as RIPv1 and RIPv2. [more…]
Wireless Networking Terminology for the CCENT Certification Exam
At its most basic, wireless communication is the sending and receiving of data through airwaves. But the CCENT certification exam expects you to understand wireless terminology and concepts. The following [more…]
Network Cabling for the CCENT Certification Exam
The CCENT certification tests you on the different types of cabling that are used in different scenarios. The following are some key points to remember about network cabling. [more…]
Network Devices and Services Overview for the CCENT Certification Exam
You can be sure to get a few questions on the CCENT certification exam that test your knowledge of types of devices and different network services. The following are some key points to remember about devices [more…]
CCENT Certification All-In-One For Dummies Cheat Sheet
The CCENT certification is a new, fast-growing certification that tests your knowledge of basic Cisco device-management and networking concepts. It is a great stepping stone to the CCNA certification and [more…]
CISSP Exam Test Day Tips
The CISSP Exam is demanding, but if you've worked your way through the Common Body of Knowledge and know your stuff when it comes to areas such as network security and disaster recovery, you should do [more…]
The Best Ways to Prepare for Your Upcoming CISSP Exam
Not only does "chance favor the prepared mind" — the CISSP Exam does too! So make sure that you've prepared yourself well for your upcoming CISSP exam. The International Information Systems Security Certification [more…]
CISSP For Dummies Cheat Sheet
CISSP is based upon a Common Body of Knowledge (CBK) determined by the International Information Systems Security Certification Consortium, Inc. (ISC)² and defined through ten tested domains, including [more…]
Windows Recovery Tools for the A+ Certification Exams
One of the hardest tasks to perform when troubleshooting a system is fixing a system that will not boot. The A+ Certification exams expect you to be comfortable with the different recovery tools available [more…]
10 or So Things You Might Have Forgotten for the A+ Certification Exams
With the massive amount of information you’re required to know for the A+ Certification exams, there are bound to be a few things that might slip past you. Here’s a quick list of some things you’ll need [more…]
RAID Types for the A+ Certification Exams
RAID (Redundant Array of Inexpensive Disks) is a method of implementing redundancy (duplicated information) on your hard drives — if one disk fails, the other disk [more…]
Bus Architectures for the A+ Certification Exams
Another term for the expansion slots on a computer’s motherboard is bus slots. A number of different bus architectures have been developed over time. For the A+ exams, you need to be able to identify the [more…]
USB and FireWire Standards for the A+ Certification Exams
The most popular ports used today on the system are the USB and FireWire ports — which allow you to connect devices such as flash drives, digital cameras, and digital video cameras. This table compares [more…]
Windows XP Boot Files for the A+ Certification Exams
Windows XP requires four core files to boot the computer. You will need to understand what they are on your A+ Certification exam. The four core files are: [more…]
