7 Layers of the OSI Reference Model

Article by Get Free CCENT, A+ and CCNA Practice Exams and Study Guides.

The Application Layer (Layer 7) refers to communication services to applications and is the interface between the network and the application. Most application layer protocols offer services that programs use to access the network, such as the Simple Mail Transfer Protocol (SMTP).

Application layer protocols often include the session and presentation layer functions. A typical protocol stack consists of four separate protocols, which run at the app ... Read More

CCNA Security, CCNP, And Cisco CCNA Practice Exam Questions: DHCP, OSPF, Router Lockdowns, And More!

Article by Chris Bryant, CCIE #12933

Test your knowledge of DHCP, one-step router lockdowns, and other vital Cisco certification exam topics with these practice exam questions!

CCENT Certification:

Which of the following are contained in a DHCP Offer packet? Extra credit: Name the device(s) that send DHCP Offers, and tell me whether that packet is a broadcast, unicast, or multicast.

A. The IP address

B. The network mask

C. T ... Read More

Cisco CCNA, CCNP, and Security Practice Exam Questions: IP Spoofing, Troubleshooting, And More!

Article by Chris Bryant, CCIE #12933

To help you prepare for Cisco certification exam success, here are some complimentary practice exam questions. Enjoy!

CCENT Exam:

What’s the main difference between a hub and a repeater?

A. A hub has more ports than a repeater.

B. A repeater has more ports than a hub.

C. A hub works at Layer 2 of the OSI model, where a repeater works at Layer 1.

D. A repeater works at Layer 2 of the O ... Read More

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Cisco CCNA, CCNP, And Security Practice Exam: Frame Relay, The IPS, And More!

Article by Chris Bryant, CCIE #12933

In today’s Cisco practice exam question set, you’ll be tested on your knowledge of Frame Relay, the IPS, SDEE, and more. Let’s get started!

CC ... Read More

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Cisco CCNA, CCNP, and Security Practice Exam: Frame Relay, NTP, Authentication, And More!

Article by Chris Bryant, CCIE #12933

In today’s Cisco practice exam, we’ll take a look at Frame Relay traffic congestion indicators, Network Time Protocol, and other important exam topic ... Read More

by cedsolutions.com

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640-816 ExamInterconnecting Cisco Networking Devices Part 2Exam Number/Code : 640-816Exam Name : Interconnecting Cisco Networking Devices Part 2Questions and Answers : 268 Q&AsUpdate Time: 2010-10-25

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