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Online Computer Science Test - Networking Test 1

Instruction:
  • This is a FREE online test. Beware of scammers who ask for money to attend this test.
  • Total number of questions: 20.
  • Time allotted: 30 minutes.
  • Each question carries 1 mark; there are no negative marks.
  • DO NOT refresh the page.
  • All the best!

Marks : 2/20

Total number of questions
20
Number of answered questions
0
Number of unanswered questions
20
Test Review : View answers and explanation for this test.
1.
What part of 192.168.10.51 is the Network ID, assuming a default subnet mask?
192
192.168.10
0.0.0.5
51
None of the above
Your Answer: Option
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Correct Answer: Option
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2.
A distributed network configuration in which all data/information pass through a central computer is
bus network
star network
ring network
Point-to-point network
None of the above
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Correct Answer: Option
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3.
Which of the following is not a disadvantage of wireless LAN?
Slower data transmission
higher error rate
interference of transmissions from different computers
All of the above
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Correct Answer: Option
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4.
On a class B network, how many hosts are available at each site with a subnet mask of 248?
16,382
8,190
4,094
2,046
1,022
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5.
If delays are recorded as 10 bit numbers in a 50 router network, and delay vectors are exchanged twice a second, how much bandwidth per fill duplex line is occupied by the distributed routing algorithm?
500 bps
1500 bps
5 bps
1000 bps
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6.
You are working with a network that has the network ID 192.168.10.0. What subnet should you use that supports four subnets and a maximum number of hosts?
255.255.255.192
255.255.255.224
255.255.255.240
255.255.255.248
255.255.255.252
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7.
The transfer of data from a CPU to peripheral devices of a computer is achieved through
modems
computer ports
interfaces
buffer memory
None of the above
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8.
Four bits are used for packet sequence numbering in a sliding window protocol used in a computer network. What is the maximum window size?
4
8
15
16
None of the above
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9.
Typewriter terminals can print computer-generated data at a rate of
10 characters per second
120 characters per second
120 characters per minute
1200 characters per minute
None of the above
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10.
Which of the following network access standard is used for connecting stations to a circuit-switched network?
X.3
X.21
X.25
X.75
None of the above
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11.
What is the first octet range for a class B IP address?
128 - 255
1 - 127
192 - 223
128 - 191
127 - 191
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12.
In geosynchronous orbit, satellite
remains in a fixed position so that as earth rotates, it can fully cover the earth
remains in a fixed position related to points on earth
moves faster than the earth's rotation so that it can cover larger portion of earth.
moves simultaneously
None of the above
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13.
Which of the following TCP/IP protocol is used for file transfer with minimal capability and minimal overhead?
RARP
FTP
TFTP
TELNET
None of the above
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14.
What OSI layer handles logical address to logical name resolution?
Transport
Physical
Presentation
Data Link
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15.
You have purchased a MAU (Multistation Access Unit) from your computer supplier and now must decide what type of network card you should install in the workstations. Which of the following would be the most appropriate?
Fast SCSI Wide
Token-Ring
ArcServe
Ethernet
None of the above
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16.
Baseband is
transmission of signals without modulation
a signal all of whose energy is contained within a finite frequency range
the simultaneous transmission of data to a number of stations
All of the above
None of the above
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17.
Synchronous protocols
transmit characters one at a time
allow faster transmission than asynchronous protocols do
are generally used by personal computers
are more reliable
None of the above
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18.
Different computers are connected to a LAN by a cable and a/an
modem
interface card
special wires
telephone lines
None of the above
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19.
A characteristic of a multiprogramming system is:
simultaneous execution of program instructions from two applications
concurrent processing of two or more programs
multiple CPUs
All the above
None of the above
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20.
Modulation in which the two binary values are represented by two different amplitudes of the carrier frequency is known as
Amplitude-shift keying
Amplitude
Amplitude modulation
Aloha
None of the above
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