Computer Networks MCQs
998+ questions with answers
The Tree structure starts with a ______ node.
In a network topology, when a data signal is transmitted, there are chances that this signal may bounce back to the device that has already carried the signal. In order to avoid this, we must use _____ at the end.
Bridge is an example of a ________ device.
The sharing of a medium and its link by two or more devices is called _________
Multiplexing is used in _______
Which multiplexing technique used to transmit digital signals?
If there are n signal sources of same data rate, then the TDM link has _______ slots.
If link transmits 4000frames per second, and each slot has 8 bits, the transmission rate of circuit this TDM is _________
Multiplexing provides _________
In TDM, the transmission rate of a multiplexed path is always _______ the sum of the transmission rates of the signal sources.
In TDM, slots are further divided into _________
Which of the following delay is faced by the packet in travelling from one end system to another?
For a 10Mbps Ethernet link, if the length of the packet is 32bits, the transmission delay is ____________ (in microseconds)
The time required to examine the packet’s header and determine where to direct the packet is part of __________
Given L = number of bits in the packet, a = average rate and R = transmission rate. The Traffic intensity in the network is given by ____________
In the transfer of file between server and client, if the transmission rates along the path is 10Mbps, 20Mbps, 30Mbps, 40Mbps. The throughput is usually ___________
The total nodal delay is given by ____________
In a network, If P is the only packet being transmitted and there was no earlier transmission, which of the following delays could be zero?
Transmission delay does not depend on _____________
Propagation delay depends on ___________
_____________ allows LAN users to share computer programs and data.
With respect to physical media, STP cables stands for _________
A standalone program that has been modified to work on a LAN by including concurrency controls such as file and record locking is an example of ___________
The __________ portion of LAN management software restricts access, records user activities and audit data, etc.
What is the max length of the Shielded twisted pair cable?
What is the central device in star topology?
What is the max data transfer rate for optical fiber cable?
Which of the following architecture uses the CSMA/CD access method?
The attacker using a network of compromised devices is known as _____________
Which of the following is a form of DoS attack?
The DoS attack, in which the attacker establishes a large number of half-open or fully open TCP connections at the target host is ________
The DoS attack, in which the attacker sends deluge of packets to the targeted host is ________
Packet sniffers involve ____________
Firewalls are often configured to block ___________
In a network, If P is the only packet being transmitted and there was no earlier transmission, which of the following delays could be zero?
Which of this is not a guided media?
UTP is commonly used in __________
Coaxial cable consists of _______ concentric copper conductors.
Fiber optics posses following properties __________
If an Optical Carrier is represented as OC-n, generally the link speed equals(in Mbps) __________
Terrestrial radio channels are broadly classifed into _____ groups.
Geostationary satellites ___________
A local telephone network is an example of a _______ network.
Most packet switches use this principle ____________
If there are N routers from source to destination, the total end to end delay in sending packet P(L-> number of bits in the packet R-> transmission rate) is equal to ______________
What are the Methods to move data through a network of links and switches?
The required resources for communication between end systems are reserved for the duration of the session between end systems in ________ method.
In _________ systems, resources are allocated on demand.
Which of the following is not an application layer service?