Misc Topics in Computer Networks

Question 21

In networking terminology UTP means

• Ubiquitous teflon port

• Uniformly terminating port

• Unshielded twisted pair

• Unshielded T-connector port

Question 22

If there are n devices (nodes) in a network, what is the number of cable links required for a fully connected mesh and a star topology respectively

• n(n −1) / 2, n
• n, n −1
• n −1, n
• n −1, n(n −1) / 2

Question 23

What is WPA?

• wired protected access
• wi-fi protected access
• wired process access
• wi-fi process access

Question 24

SATA is the abbreviation of

• Serial Advanced Technology Attachment
• Serial Advanced Technology Architecture
• Serial Advanced Technology Adapter
• Serial Advanced Technology Array

Question 25

Bit stuffing refers to

• inserting a \'0\' in user stream to differentiate it with a flag
• inserting a \'0\' in flag stream to avoid ambiguity
• appending a nibble to the flag sequence
• appending a nibble to the use data stream

Question 26

What frequency range is used for microwave communications, satellite and radar?

• Low frequency: 30 kHz to 300 kHz
• Medium frequency: 300 kHz to 3 MHz
• Super high frequency: 3000 MHz to 30000 MHz
• Extremely high frequency: 30000 kHz

Question 27

Consider an uncompressed stereo audio signal of CD quality which is sampled at 44.1 kHz and quantized using 16 bits. What is required storage space if a compression ratio of 0.5 is achieved for 10 seconds of this audio?

• 172 KB
• 430 KB
• 860 KB
• 1720 KB

Question 28

What is compression ratio in a typical mp3 audio files?

• 4:1
• 6:1
• 8:1
• 10:1

Question 29

A computing architecture, which allows the user to use computers from multiple administrative domains to reach a common goal is called as

• Grid Computing
• Neutral Networks
• Parallel Processing
• Cluster Computing

Question 30

If the frame buffer has 8 bits per pixel and 8 bits are allocated for each of the R, G, B components, what would be the size of the lookup table?

• 24 bytes
• 1024 bytes
• 768 bytes
• 256 bytes