COMPUTER NETWORKING QUIZ

A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. Differential PCM with 4 bit relative signal value is used. Then how many bits per second are actually sent?

64 Kbps

32 Kbps

8 Kbps

128 Kbps.

None of these

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Maximum data rate of a channel for a noiseless 3-kHz binary channel is

6000 bps

3000bps

None of these

1500 bps

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Which of the following access lists will allow only HTTP traffic into network 196.15.7.0?

access-list 100 permit tcp any 196.15.7.0 0.0.0.255 eq www

access-list 10 deny tcp any 196.15.7.0 eq www

access-list 110 permit ip any 196.15.7.0 0.0.0.255

access-list 100 permit 196.15.7.0 0.0.0.255 eq www

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Which utility is useful for troubleshooting NetBIOS name resolution problems?

Hostname

None of these

PING

Netstat

NBTSTAT

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MAC is

None of these

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

network access standard for connecting stations to a circuit-switched network

a very common bit-oriented data link protocol issued to ISO.

a method access control technique or multiple-access transmission media

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Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost.

1/ (1 - F)

K I (K - P)

None of these

P I (K + 1)

KIK (1 + F)

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Cisco's Unified Wireless Solution provides a mesh solution. What devices do you absolutely need to purchase to run a Cisco solution?1. WCS2. Controller3. Access point4. Bridge

2 and 3

1 and 4 only

4 only

1 and 2

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A front-end processor is

preliminary processor of batch jobs.

None of these

a processor in a large-scale computer that executes operating system instructions

a minicomputer that relieves main-frame computers at a computer centre of communications control functions

a user computer system

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Which of the following provides a storage mechanism for incoming mail but does not allow a user to download messages selectively?

DHCP

IMAP

SMTP

2

POP3

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How many bits internet address is assigned to each host on a TCP/IP internet which is used in all communications with the host?

64 - bits

32 - bits

None of these

16 - bits

48 - bits

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