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11. The Internet Control Message Protocol (ICMP)
A. allows gateways to send error a control messages to other gateways or hosts
B. provides communication between the Internet Protocol Software on one machine and the Internet Protocol Software on another
C. reports error conditions to the original source, the source must relate errors to individual application programs and take action to correct the problem
D. All of the above
E. None of the above
12. Your company has a LAN in its downtown office and has now set up a LAN in the manufacturing plant in the suburbs. To enable everyone to share data and resources between the two LANs, what type of device(s) are needed to connect them? Choose the most correct answer.
A. Modem
B. Cable
C. Hub
D. Router
13. The term ‘duplex’ refers to the ability of the data receiving stations to echo back a confirming message to the sender. In full duplex data transmission, both the sender and the receiver
A. cannot talk at once
B. can receive and send data simultaneously
C. can send or receive data one at a time
D. can do one way data transmission only
E. None of the above
14. How many hosts are attached to each of the local area networks at your site?
A. 128
B. 254
C. 256
D. 64
E. None of the above
15. Which of the following technique is used for fragment?
A. a technique used in best-effort delivery systems to avoid endlessly looping packets
B. a technique used by protocols in which a lower level protocol accepts a message from a higher level protocol and places it in the data portion of the low level frame
C. one of the pieces that results when an IP gateway divides an IP datagram into smaller pieces for transmission across a network that cannot handle the original datagram size
D. All of the above
E. None of the above
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