In which ARQ, when a NAK is received, all frame sent since the last frame acknowledged an retransmitted
Answer: B
No answer description available for this question
Enter details here
Phase shift keying (PSK.) method is used to modulate digital signals at 9600 bps using 16 levels. The line signals speed (i.e. modulation rate) will be
Answer: A
No answer description available for this question
Enter details here
A 100 km long cable runs at the T1 data rate. The propagation speed in the cable is half the speed of light. How many bits is in the cable ?
Answer: C
No answer description available for this question
Enter details here
When does the output of a NOR gate = 0?
Answer: C
No answer description available for this question
Enter details here
Which of the following gates has the exact inverse output of the OR gate for all possible input combinations?
Answer: A
No answer description available for this question
Enter details here
What is the Boolean expression for a four-input OR gate?
Answer: A
No answer description available for this question
Enter details here
An inverter output is the complement of its input.
Answer: A
No answer description available for this question
Enter details here
A NAND gate output is LOW only if all the inputs are HIGH.
Answer: A
No answer description available for this question
Enter details here
Which of the following program is used to copy files to or from another using time sharing system over a single link ?
Answer: C
No answer description available for this question
Enter details here
How many crosspoints are needed in a single-stage switch with 40 inputs and 50 outputs ?
Answer: D
No answer description available for this question
Enter details here