Computer Network Mcqs

Page No. 14

The DoS attack, in which the attacker sends deluge of packets to the targeted host is ________


aVulnerability attack


bBandwidth flooding


cConnection flooding


dUDP flooding


View Answer Bandwidth flooding

The DoS attack, in which the attacker establishes a large number of half-open or fully open TCP connections at the target host is ________


aVulnerability attack


bBandwidth flooding


cConnection flooding


dUDP flooding


View Answer Connection flooding

Which of the following is a form of DoS attack?


aVulnerability attack


bBandwidth flooding


cConnection flooding


dAll of the mentioned


View Answer All of the mentioned

The attacker using a network of compromised devices is known as _____________


a Internet


bBotnet


cTelnet


dD-net


View Answer Botnet

Geostationary satellites ___________


aAre placed at a fixed point above the earth


bRotate the earth about a fixed axis


cRotate the earth about a varying axis


dAll of the mentioned



Radio channels are attractive medium because __________


aCan penetrate walls


bConnectivity can be given to mobile user


cCan carry signals for long distance


dAll of the mentioned


View Answer All of the mentioned

Terrestrial radio channels are broadly classifed into _____ groups.


a2


b3


c4


d1


View Answer 3

If an Optical Carrier is represented as OC-n, generally the link speed equals(in Mbps) __________


an*39.8


bn*51.8


c2n*51.8


dNone of the mentioned


View Answer n*51.8

Fiber optics posses following properties __________


aImmune electromagnetic interference


bVery less signal attenuation


cVery hard to tap


dAll of the mentioned


View Answer All of the mentioned

Coaxial cable consists of _______ concentric copper conductors.


a1


b2


c3


d4


View Answer 2

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