WAN Questions

Question 1

Your company has just expanded to a new location in another city. Which WAN technology should you use to save your money while ensure a always-up connectivity?

A. Packet switched
B. Circuit switched
C. Leased line
D. Wireless

Answer: A

Explanation

Circuit-switched connections are a poor choice because they are not usually always on, and they get expensive the longer they are connected. Leased lines have  always-on connectivity, but at a prohibitive cost.

Wireless does not  have the range to cover interstate distances.

Question 2

You connect the serial interface of a Cisco router running default encapsulation to a serial interface of a Juniper router which is running HDLC encapsulation. You notice that the two routers cannot send and receive data. What is the problem?

A. Cisco router does not support HDLC encapsulation so you have change the encapsulation of the Juniper router.
B. Cisco router is running IETF encapsulation so you must change it to HDLC encapsulation. Cisco router is running proprietary HDLC implementation so it does not compatible with other vendor’s HDLC implementations
D. This Cisco router is running an old version so you need to upgrade it so that two routers can communicate

Answer: C