Computer Knowledge
Computer Networks
2,095 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
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Satellite
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Frame Delay
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ATM
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All of the above
D
Correct answer
Explanation
Wide Area Networks (WANs) utilize various technologies for long-distance connectivity, including satellite links, packet-switching networks like ATM, and frame-based protocols.
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Bridge
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Repeater
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Router
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Gateway
B
Correct answer
Explanation
A repeater is a physical layer device that receives a signal, amplifies or regenerates it, and retransmits it to extend the range of the network.
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gateway
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bridge
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acoustic coupler
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time-division multiplexer
C
Correct answer
Explanation
An acoustic coupler is a device that converts electrical signals into sound and vice versa, allowing a telephone handset to act as a modem.
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technique for dial access
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technique for start-stop data
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data bit rate
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DTE/DCE interface
D
Correct answer
Explanation
The X.25 standard defines the interface between Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE).
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4 cells
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either 4 or 8 cells
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8 cells
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none of the above
C
Correct answer
Explanation
For a multipoint line with 4 drops, backup requires dedicated circuits for each segment to maintain full capability.
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on multipoint analog data channels
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more efficiently than dumb TDMs
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more efficiently than smart TDMs
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like modem sharing devices
A
Correct answer
Explanation
Frequency Division Multiplexing (FDM) divides the available bandwidth into multiple frequency bands, making it suitable for analog channels.
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host
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address
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domain
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switch
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Hub
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HTTP
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Multiplex
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None of above
A
Correct answer
Explanation
In VSAT (Very Small Aperture Terminal) networks, the central station that manages the communication between remote terminals is known as the Hub.
C
Correct answer
Explanation
In a bus topology, all nodes are connected to a single common communication line, known as the bus or backbone, which they share to transmit and receive data.
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mechanical device with multiple gears
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electronic device for connecting several computers
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place for storing incoming mail at server
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none of these
B
Correct answer
Explanation
In networking, a hub is a physical layer device used to connect multiple devices in a network segment, acting as a common connection point.
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a particular hard disc scheme used in workstation
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a particular switching scheme used in digital switches
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a particular wiring scheme for an Ethernet LAN
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none of these
C
Correct answer
Explanation
10Base-T is a standard for Ethernet local area networks, specifying a transmission speed of 10 Mbps over twisted-pair cabling.
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circuit switching
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packet switching
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hybrid switching
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none of these
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Switch
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Router
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Bridge
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Web Host
D
Correct answer
Explanation
Switch, Router, and Bridge are networking hardware devices. Web Host is a service or a server providing space for websites.
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Increased Subscribers Dial-up Network
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International Subscribers Domain Name
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Integrated Subscribers Developer Network
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Integrated Services Digital Network
D
Correct answer
Explanation
ISDN stands for Integrated Services Digital Network, a set of communication standards for simultaneous digital transmission of voice and data.
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Router
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PC
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Ethernet switch
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UTP Hub
B
Correct answer
Explanation
Router, Ethernet switch, and UTP Hub are all networking infrastructure devices. A PC (Personal Computer) is an end-user device, making it the odd one out.