Which of the following pair of Application layer protocol of OSI model and its services is CORRECT?
I. X.400 – Directory
II. X.500 – Electronic Mail protocol
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Correct answer: (D) Neither I nor II
BEL PE · Computer Science
Computer Networks Previous Year Questions
9 Computer Networks (Computer Science) questions asked in BEL PE previous year papers, each with the correct answer and explanation. Read them free on UTpaper, or attempt the full papers as timed online tests.
- 9 questions
- Official answer key
- Free
Other Computer Science topics
In any computer network, a communication protocol normally perform, which of the following functions for efficient and error free transmission of data?
I. Data Routing
II. Procedure and order of Transmission
III. Data security
IV. Data formatting
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Correct answer: (D) I, II, III and IV
Match the following network diagram with the correct topology.
Network diagram: I. Four computers, each connected directly to one central host; II. Computers connected to one another in a closed loop; III. Computers attached to a single communication line.
Topology: 1. Ring network; 2. Bus network; 3. Star network
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Correct answer: (C) I – 3; II – 1; III – 2
Which of the following statement is CORRECT regarding FLIP-FLOPS?
I. A FLIP-FLOP circuit can maintain a binary state indefinitely (as long as power is applied) until directed by an input signal to switch states.
II. The major differences among various types of FLIP-FLOPS are in the number of inputs they possess and in the manner in which the inputs affect the binary state.
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Correct answer: (A) Both I and II
In context of computer networks, based on data transmission speed which of the following are the bases categories of communication channels (paths)?
I. Narrow band
II. Voice band
III. Broad band
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Correct answer: (D) I, II and III
In context of OSI model of computer networks ________ layer provides services that directly support end users of networks and is a collection of miscellaneous protocols for various commonly used applications such as electronic mail, file transfer etc.
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Correct answer: (C) Application
In context of OSI model of computer networks, which of the following is a Transport Layer Protocol?
I. Transport Control Protocol
II. User Datagram Protocol
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Correct answer: (C) Both I and II
In context of computer networks which of the following is a data transmission mode?
I. Simplex
II. Half Simplex
III. Full Duplex
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Correct answer: (C) Only I and III
In context of OSI model of computer networks ________ layer provides means of establishing, maintaining and transmitting a dialogue between two end users.
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Correct answer: (A) Session
How to use these BEL PE Computer Science questions
Every question here was asked in a real BEL PE paper; the paper and shift are shown on the card, and the number opens the question on its own page. Try each one before tapping Show answer, then attempt the full BEL PE papers as timed tests to check your speed under exam conditions.