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26. 

ICMP (Internet Control Message Protocol) is
A. a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address
B. a TCP/IP high level protocol for transferring files from one machine to another
C. a protocol used to monitor computers
D. a protocol that handles error and control messages
E. None of the above
27. 

If you get both local and remote echoes, every character you type will appear on the screen
A. once
B. twice
C. three times
D. never
E. None of the above
28. 

What part of 192.168.10.51 is the Network ID, assuming a default subnet mask?
A. 192
B. 192.168.10
C. 0.0.0.5
D. 51
E. None of the above
29. 

The slowest transmission speeds are those of
A. twisted-pair wire
B. coaxial cable
C. fiber-optic cable
D. microwaves
30. 

A noiseless 3 KHz Channel transmits bits with binary level signals. What is the maximum data rate?
A. 3 Kbps
B. 6 Kbps
C. 12 Kbps
D. 24 Kbps.