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
D
Correct answer
Explanation
LAN is network of computing devices in a room, building or campus.
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ISP card
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Ethernet card
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NIC
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Router
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Cat 5
C
Correct answer
Explanation
Device that allows you to share your connection to the internet with other computers in your home.
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Enterprise network
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CAN
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MAN
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WAN
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PAN
C
Correct answer
Explanation
MAN is a network of computing devices within a city.
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Local Area Network (LAN)
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Personal Area Network (PAN)
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Remote Area Network (RAN)
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Metropolitan Area Network (MAN)
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Country Area Network (CAN)
C
Correct answer
Explanation
RAN is not a type of network.
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Simplex transmission
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Half duplex transmission
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Full duplex transmission
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Parallel transmission
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Isochronous transmission
E
Correct answer
Explanation
It guarantees that the data is transmitted at a fixed rate.
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Thermal
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Intermodulation
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Cross talk
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Impulse
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Attenuation
D
Correct answer
Explanation
These are noise owing to irregular disturbance, such as lightning, flawed communication elements.
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Radio Transmission
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Satellite Communication
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Microwave Communication
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Infrared Transmission
D
Correct answer
Explanation
This is suitable as it is a short range as well as point to point communication mode. It does not pass through walls. It cannot be operated through TV with remote across a wall.
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Cellular System
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Satellite Communication System
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Wireless LAN
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Paging System
C
Correct answer
Explanation
Correct, this makes use of one point access system.
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2 > 3 > 4 > 1
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3 > 2 > 1 > 4
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3 > 2 > 4 > 1
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2 > 3 > 1 > 4
D
Correct answer
Explanation
The correct order of ranges of the modes of wireless applications is 2 > 3 > 1 > 4 with FM radio (~100 km) having the highest range followed by Wi-Fi (100m), bluetooth (10 m) and IR having the lowest range (with in a room).
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It uses the concept of one access point.
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The data generally breaks up into packets.
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Channel access is shared.
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Very high speed for all applications
D
Correct answer
Explanation
This is incorrect as it cannot support very high data rates. So, generally video transmission is not good on WLAN.
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Microwave links
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Cellular systems
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Satellite communication
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Paging systems
A
Correct answer
Explanation
True, microwave links are point to point long distance links. So, they are fixed.
B
Correct answer
Explanation
Yes, data is in the form of bursts.
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Gateway
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Repeater
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Router
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Modem
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LAN
D
Correct answer
Explanation
A modem is a combined device for modulation and demodulation.
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WWW
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Internet
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Extranet
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Usenet
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Telnet
C
Correct answer
Explanation
An extranet is a computer network that allows controlled access from the outside. An extranet is a private network that uses internet technology and the public telecommunication system to securely share part of a business's information.
D
Correct answer
Explanation
WAP (Wireless Application Protocol) is a specification for a set of communication protocols to standardize the way that wireless devices, such as cellular telephones and radio transceivers, can be used for Internet access, including e-mail, the World Wide Web, newsgroups, and instant messaging.