Computer Knowledge
Computer Networks
2,256 Questions
Computer networks form the backbone of digital communication, connecting multiple devices to share data and resources. This area covers network architectures, transmission media, modems, and topologies like LAN. These concepts are crucial for computer knowledge sections in banking and government exams.
Network topologiesModulation and demodulationNetwork addressingFiber optic cablesWireless infrastructure
Computer Networks Questions
B
Correct answer
Explanation
Bus topology requires a multipoint connection.
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A private company network
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A private company network that includes external specified users
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A network operating system
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A network filing system
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Another name for internet
A
Correct answer
Explanation
Intranet is a private company network based on TCP/IP protocols (an internet) belonging to an organisation, usually a corporation, accessible only by the organisation's members, employees or others with authorisation.
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NetStumbler
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Kismet
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KisMac
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Aircrack
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Netsniff
B
Correct answer
Explanation
Kismet is a passive wireless discovery tool.
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SSID stealth
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SSID unicast
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SSID cloaking
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SSID min
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SSID Sec
C
Correct answer
Explanation
Network cloaking is a wireless security measure achieved by hiding the network name from being broadcast in public.
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Infrastructure
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Point to point
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ESS
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BSS
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Ad hoc
E
Correct answer
Explanation
Adhoc connects directly with out any AP.
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802.11a
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802.11b
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802.11g
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802.11i
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802.11n
E
Correct answer
Explanation
802.11n can cross signal across much of range attaining speeds of 100Mbps.
A
Correct answer
Explanation
Hardware implementation of the link layer is NICs (Network Interface Cards).
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linear code
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systematic code
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block code
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non linear code
A
Correct answer
Explanation
In a linear code, the r redundant bits (check bits) are computed as a linear function of the m data bits.
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Hamming code
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Convolutional code
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Read-Solomon code
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Low density parity check code
B
Correct answer
Explanation
Convolutional codes are widely used in the deployed networks such as GSM mobile phone system.
A
Correct answer
Explanation
To find out the number of bits difference, XOR can be used with two crosswords and counting the number of 1 bits in the result.
For example:
1001100
1010100
0011000 (After XORing the above two)
Here, two bits are different.
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DSL
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Satellite communication
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DVDs
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GSM Mobile phone system
D
Correct answer
Explanation
Reed Solomon codes are widely used in DSL, satellite communication, DVDs, CDs.
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Fault Tolerance
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Shortest Path Routing
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Speedy Delivery
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Ensuring a loop-free topology
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Minimising collisions
D
Correct answer
Explanation
The Spanning Tree Protocol (STP) is a network protocol that ensures a loop-free topology for any bridged Ethernet local area network. The basic function of STP is to prevent bridge loops and the broadcast radiation that results from them. Spanning tree also allows a network design to include spare (redundant) links to provide automatic backup paths if an active link fails, without the danger of bridge loops or the need for manual enabling/disabling of these backup links.
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turn off the power network
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connect network devices
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turn on the power network
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boot the network
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none of the above
B
Correct answer
Explanation
Yes, a switch will connect the network devices.
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Simplex
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Duplex
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Triplex
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Both 1 and 2
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None of the above
B
Correct answer
Explanation
Yes, when a data communication is done in both ways, it is called as duplex system.
C
Correct answer
Explanation
Broadband Radio Service (BRS) formerly known as Multichannel Multipoint Distribution Service (MMDS), also known as Wireless Cable, is a wireless telecommunications technology, used for general-purpose broadband networking or, more commonly, as an alternative method of cable television programming reception.