Computer Knowledge
Computer Networks
2,614 Questions
Computer networks involve the architecture, protocols, and security measures used for digital communication. This collection covers OSI model layers, IP addressing, data transmission, and cryptographic standards. These concepts are vital for the computer knowledge sections of banking and government exams.
OSI model layersNetwork protocolsIP subnet maskingData encryption standardsServer configurationsNetwork commands
Computer Networks Questions
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Class A
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Class B
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Class C
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Class D
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Class E
C
Correct answer
Explanation
It defines the range 192-223 .
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To transfer the files
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Client to server connection
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Sending email
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Remote-email access
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Connection between web server and web browser
D
Correct answer
Explanation
POP-3 used to download the email by an email client form an email server.
D
Correct answer
Explanation
This is the correct answer , the exact possible number of networks in class B is 16384. It is calculated as 214 = 16384. 14 is a usable network ID bits (16 - 2 = 14).
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Physical layer
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Transport layer
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Application layer
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Network layer
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None of the above
B
Correct answer
Explanation
Transport layer provides end-to-end communication services for the applications. Multiplexing is also a communication method for the multiple data streams in to a single node over a shared medium.
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Source address
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Destination address
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Hop limit
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Prefix length
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Next header
C
Correct answer
Explanation
This field prevents packets from endlessly circulating on an IPV6 network.
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To reserve for local link addressing
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Used for a multicast packet
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To reserve for broadcast
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To reserve for loopback
B
Correct answer
Explanation
Range of ip address is from 224.0.0.0 to 239.255.255.255 used for multicast packets. It is used to transmit the same packet, from a single source, to a group of selected destinations.
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Reverse Address Resolution Protocol
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Address Resolution Protocol
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IP Number
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Host
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Hostname
A
Correct answer
Explanation
It is a network layer protocol used to obtain an IP address for a given hardware address.
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Physical layer
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Data link layer
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Transport layer
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Network layer
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None of the above
B
Correct answer
Explanation
It provides services to network layer as each layer provides services to its adjacent upper layer in the OSI model and the network layer is the just upper layer of the data link layer.
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230.0.0.0
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130.4.5.6
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30.0.0.0
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30.4.5.6
B
Correct answer
Explanation
This is a class B host address. The range of first byte of class B is 128-191. The left most n bits(prefix) define the network and the rightmost 32-n bits define the host.
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Remote procedure call
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Remote object
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Remote interface
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Remote registry server
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Local object
A
Correct answer
Explanation
It provides portability, network independence, and secure distributed applications.
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High reliability
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Mainframe
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Scalability
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File sharing
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Resource sharing
B
Correct answer
Explanation
In this architecture, users interact with the host through the terminal that captures key strokes and sends that information to the host.
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SSL (Secure Socket Layer)
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IPsec (Internet Protocol Security)
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TLS (Transport Layer Security)
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Ethernet
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None of the above
D
Correct answer
Explanation
This protocol is used to provide fast data transfer among the LANs(Local Area Network) interfaces.
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It translates the network address in terms of domain names.
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It automatically assigns the valid IP address from the server to all the network devices.
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It is used for internet chat and other communication in the network.
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It is used to receive the messages from the remote servers for e-mail clients.
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None of the above
B
Correct answer
Explanation
Yes, DHCP protocol automatically assigns the valid IP address from the server to all the network devices.
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E-mail
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ICMP
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SNMP
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IRC
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TFTP
D
Correct answer
Explanation
IRC is the perfect one to communicate.
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Firewalling
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Firewalking
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XMAS scan
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Passive footprinting
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None of the above
E
Correct answer
Explanation
Yes, none of the option is correct.