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GATE 2019 - Computer Network Quiz-1 ( Concept of layering )

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Question 1

Consider a protocol which consist of n no of layers. Let M be the size of message provided by the application to the protocol for its transmission. Let H be the no of bits appended by every layer to the message, which is also known as appending of header information. What is the total size of packet being transferred, when n= 10, M= 12Bytes and H =32?

Question 2

In OSI model, at which layer HTTP works:

Question 3

Consider a CSMA / CD network that transmits data at a rate of 100 Mbps (10⁸ bits per second) over a 1 km (kilometer) cable with n repeaters. If the minimum frame size required for this network is 1250 bytes, what is the signal speed (km /sec) in the cable?

Question 4

Match the following:
List-I
A). Protocol converter
B). Passive device
C). It is a pure electronic device with no software
D). Retransmits the data with high signal without interpreting
E). Pure electronic device but associated with software
F). Active device used to connect multiple LANS with filtering and forwarding as main design criteria.
G). Combination of bridge and router
List-II
1. Gateway
2. Brouter
3. Router
4. Bridge
5. Switch
6. Repeater
7. Hub

Question 5

Which of the following devices operate at network layer?
A) Gateway
B) IP-Router
C) Repeater
D) Ethernet Hub
E) Ethernet Switch
F) Ethernet Bridge

Question 6

Consider the term “Network virtual Terminal” and choose the statement which is true
i. This application allows a user to access a file in a remote host to make changes or to read data to retrieve files from remote computer
ii. It is a software version of physical terminal
iii. It allows a user to log on to a remote host
iv. None of the above

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GATE & PSU CS Computer Networks

Mar 30GATE & PSU CS