1. What type of network medium is used by SONET?
(A) UTP
(B) Coaxial
(C) Wireless
(D) Optical
2. What is the speed of an E3 connection?
(A) 1.544 Mb/s
(B) 2.048 Mb/s
(C) 34.368 Mb/s
(D) 44.736 Mb/s
3. Which devices convert digital signals to analog signals for transmission over the telephone network?
(A) Modem
(B) Switch
(C) Router
(D) Telnet
4. Which device in a packet-switching network is most likely to function as a PAD?
(A) Modem
(B) Switch
(C) Router
(D) Telnet
5. How many B channels does an ISDN Basic Rate Interface have?
(A) 1
(B) 2
(C) 3
(D) 4
6. Which WAN technology used fixed-size cells to transfer data?
(A) Frame relay
(B) Packet switching
(C) ATM
(D) 3G
7. Which of the following is used for error checking in X.25 networks?
(A) CRC
(B) ATM
(C) ECC
(D) PSE
8. If you had a committed information rate (CIR) of 128 Kb/s, what would the burst excess be?
(A) 128...