MCQ Exam Test

Q1

Devices interconnected by the LAN should include

A Computers and terminals
B mass storage device, printers and plotters
C bridges and gateways
D All of the above

Q2

If a firm wanted to transmit data from 1,000 punched cards to a remote computer, they would use a(n)

A POS terminal
B data collection terminal
C batch processing terminal
D intelligent terminal

Q3

A machine that connects to two or more electronic mail systems and transfers mail messages among them is known as

A Gateways
B mail gateway
C bridges
D User Agent

Q4

With an IP address set starting with 150, you currently have six offices that you are treating as subnets. Plans are in place to open 10 more offices before the end of the year. What subnet mask should you use to satisfy the needed number of subnets and maximize the number of hosts available at each site?

A 192
B 224
C 240
D 248

Q5

Bandlimited signal is

A transmission of signals without modulation
B a signal all of whose energy is contained within a finite frequency range
C simultaneous transmission of data to a number of stations
D All of the above

Q6

You are working with three networks that have the network IDs 192.168.5.0, 192.168.6.0, and 192.168.7.0. What subnet mask can you use to combine these addresses into one?

A 255.255.252.0
B 225.255.254.0
C 255.255.255.240
D 255.255.255.252

Q7

If digital data rate of 9600 bps is encoded using 8-level phase shift keying (PSK) method, the modulation rate is

A 1200 bands
B 3200 bands
C 4800 bands
D 9600 bands

Q8

You have a network ID of 134.57.0.0 and you need to divide it into multiple subnets in which at least 600 host IDs for each subnet are available. You desire to have the largest amount of subnets available. Which subnet mask should you assign?

A 255.255.224.0
B 255.255.240.0
C 255.255.248.0
D 255.255.255.0

Q9

Which of the following best illustrates the default subnet mask for a class A,B, and C Network?

A 0.0.0.0, 0.0.0.1, 0.0.1.1
B 255.255.255.0, 255.255.0.0, 255.0.0.0
C 255.0.0.0, 255.255.0.0, 255.255.255.0
D 255.255.0.0, 255.255.255.0, 255.255.255.255

Q10

Which of the following technique is used for Time-To-Line (TTL)?

A a technique used in best-effort delivery system 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

Q11

Which of the following is an advantage to using fiber optics data transmission?

A resistance to data theft
B fast data transmission rate
C low noise level
D All of the above

Q12

Error detection at a data link level is achieved by

A bit stuffing
B cyclic redundancy codes
C Hamming codes
D equalization

Q13

On a class B network, how many hosts are available at each site with a subnet mask of 248?

A 16,382
B 8,190
C 4,094
D 2,046

Q14

Which of the following technique is used for encapsulation?

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

Q15

Error rate is

A an error-detecting code based on a summation operation performed on the bits to be checked.
B a check bit appended to an array of binary digits to make the sum of all the binary digits.
C a code in which each expression conforms to specific rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and
D the ratio of the number of data units in error to the total number of data units

Q16

Modem is used in data transmission. When was it invented and in which country?

A 1963, USA
B 1965, Germany
C 1950, USA
D 1950, Japan

Q17

Which of the following statement is incorrect?

A if a host moves from one network to another, its IP address must change
B routing uses the network portion of the IP address, the path taken by packets travelling to a host with multiple IP addresses depends on the address used.
C IP addresses encode both a network and a host on that network, they do not specify an individual machine, but a connection to a network.
D All of the above

Q18

When the computer provides the manager with a multiple choice of possible answers, the prompting technique is

A question and answer
B form filling
C open-ended question
D menu selection

Q19

Communication network 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 with 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

Q20

Computers in a LAN can be interconnected by radio and infrared technologies.

A Wireless LANs
B Network Topologies
C Multiplexer
D Modem

Q21

Modulation is the process of

A converting analog signals to digital signals
B converting digital signals to analog signals
C Multiplexing various signals into high speed line signals
D performing data encryption.

Q22

Which network topology is considered passive?

A Cross
B Ring
C Star
D Bus

Q23

Intranets and extranets can use their network fire walls and other security features to establish secure Internet links within an enterprise or with its trading partners. Select the best fit for answer:

A Network Server
B Virtual Private Network
C Network operating system
D OSI

Q24

What are the data transmission channels available for carrying data from one location to another?

A Narrowband
B Voiceband
C Broadband
D All of the above

Q25

Which address is the loopback address?

A 0.0.0.1
B 127.0.0.0
C 127.0.0.1
D 255.255.255.255

computer-networking - Part 6

Devices interconnected by the LAN should include

If a firm wanted to transmit data from 1,000 punched cards to a remote computer, they would use a(n)

A machine that connects to two or more electronic mail systems and transfers mail messages among them is known as

Bandlimited signal is

You are working with three networks that have the network IDs 192.168.5.0, 192.168.6.0, and 192.168.7.0. What subnet mask can you use to combine these addresses into one?

If digital data rate of 9600 bps is encoded using 8-level phase shift keying (PSK) method, the modulation rate is

You have a network ID of 134.57.0.0 and you need to divide it into multiple subnets in which at least 600 host IDs for each subnet are available. You desire to have the largest amount of subnets available. Which subnet mask should you assign?

Which of the following best illustrates the default subnet mask for a class A,B, and C Network?

Which of the following technique is used for Time-To-Line (TTL)?

Which of the following is an advantage to using fiber optics data transmission?

Error detection at a data link level is achieved by

On a class B network, how many hosts are available at each site with a subnet mask of 248?

Which of the following technique is used for encapsulation?

Error rate is

Modem is used in data transmission. When was it invented and in which country?

Which of the following statement is incorrect?

When the computer provides the manager with a multiple choice of possible answers, the prompting technique is

Communication network is

Computers in a LAN can be interconnected by radio and infrared technologies.

Modulation is the process of

Which network topology is considered passive?

Intranets and extranets can use their network fire walls and other security features to establish secure Internet links within an enterprise or with its trading partners. Select the best fit for answer:

What are the data transmission channels available for carrying data from one location to another?

Which address is the loopback address?

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