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26. 

A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. If Delta modulation is selected, then how many bits per second are actually sent?
A. 32 kbps
B. 8 kbps
C. 128 kbps
D. 64 kbps.
27. 

UDP is:
A. Not a part of the TCP/IP suite
B. Connection oriented and unreliable
C. Connection orientated and reliable
D. Connectionless and unreliable
28. 

The interactive transmission of data within a time sharing system may be best suited to
A. simplex lines
B. half-duplex lines
C. full-duplex lines
D. biflex-line
E. None of the above
29. 

What OSI layer handles logical address to logical name resolution?
A. Transport
B. Physical
C. Presentation
D. Data Link
30. 

The MAC (Media Access Control) address of the network card is used in both Ethernet and Token-Ring networks and is essential for communication. What does MAC provide?
A. A logical address that identifies the workstation
B. A physical address that is randomly assigned each time the computer is started
C. A physical address that is assigned by the manufacturer
D. The logical domain address for the workstation
E. An alias for the computer name