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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 08 Dec 2025 06:00 PM study24x7 study24x7

In CRC there is no error if the remainder at the receiver is _____.

A

equal to the remainder at the sender

B

zero

C

nonzero

D

the quotient at the sender

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 08 Dec 2025 05:59 PM study24x7 study24x7

What can greatly reduce TCP/IP configuration problems?

A

WINS Server

B

WINS Proxy

C

DHCP Server

D

PDC

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 08 Dec 2025 05:58 PM study24x7 study24x7

Carrier is

A

One or more conductors that serve as a common connection for a related group of devices

B

a continuous frequency capable of being modulated or impressed with a second signal

C

the condition when two or more sections attempt to use the same channel at the same time

D

a collection of interconnected functional units that provides a data communications service among stations attached to the network

Computer Science
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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 05 Dec 2025 04:42 PM study24x7 study24x7

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.

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 05 Dec 2025 04:42 PM study24x7 study24x7

The slowest transmission speeds are those of

A

twisted-pair wire

B

coaxial cable

C

fiber-optic cable

D

microwaves

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 05 Dec 2025 04:42 PM study24x7 study24x7

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

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 04 Dec 2025 01:13 PM study24x7 study24x7

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

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 04 Dec 2025 01:12 PM study24x7 study24x7

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

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 04 Dec 2025 01:11 PM study24x7 study24x7

A remote batch-processing operation in which data is solely input to a central computer would require a:

A

telegraph line

B

simplex lines

C

mixedband channel

D

All the above

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 03 Dec 2025 11:59 AM study24x7 study24x7

Which of the following TCP/IP protocol allows an application program on one machine to send a datagram to an application program on another machine?

A

UDP

B

VMTP

C

X.25

D

SMTP

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 03 Dec 2025 11:58 AM study24x7 study24x7

A distributed network configuration in which all data/information pass through a central computer is

A

bus network

B

star network

C

ring network

D

Point-to-point network

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 03 Dec 2025 11:54 AM study24x7 study24x7

The synchronous modems are more costly than the asynchronous modems because

A

they produce large volume of data

B

they contain clock recovery circuits

C

they transmit the data with stop and start bits

D

they operate with a larger bandwidth

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 02 Dec 2025 01:30 PM study24x7 study24x7

Which of the following device is used to connect two systems, especially if the systems use different protocols?

A

hub

B

bridge

C

gateway

D

repeater

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 02 Dec 2025 01:29 PM study24x7 study24x7

Which of the following TCP/IP protocol is used for transferring electronic mail messages from one machine to another?

A

FTP

B

SNMP

C

SMTP

D

RPC

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 02 Dec 2025 01:29 PM study24x7 study24x7

When you ping the loopback address, a packet is sent where?

A

On the network

B

Down through the layers of the IP architecture and then up the layers again

C

Across the wire

D

through the loopback dongle

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 01 Dec 2025 01:29 PM study24x7 study24x7

Satellite-Switched Time-Division Multiple Access (SS/TDMA) is

A

the method of determining which device has access to the transmission medium at any time

B

a medium access control technique for multiple access transmission media

C

a form of TDMA in which circuit switching is used to dynamically change the channel assignments

D

All of the above

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 01 Dec 2025 01:28 PM study24x7 study24x7

Avalanche photodiode receivers can detect hits of transmitted data by receiving

A

100 photons

B

200 photons

C

300 photons

D

400 photons

Computer Science
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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 01 Dec 2025 01:26 PM study24x7 study24x7

Contention is

A

One or more conductors that serve as a common connection for a related group of devices

B

a continuous frequency capable of being modulated or impressed with a second signal

C

the condition when two or more stations attempt to use the same channel at the same time

D

a collection of interconnected functional units that provides a data communications service among stations attached to the network

Computer Science
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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 28 Nov 2025 12:53 PM study24x7 study24x7

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

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Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52
Computer Science
8 followers study24x7 28 Nov 2025 12:50 PM study24x7 study24x7

How many hosts are attached to each of the local area networks at your site?

A

128

B

254

C

256

D

64

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