Computer Network Mcqs

Page No. 72

In RPC, while a server is processing the call, the client is blocked ________


aunless the client sends an asynchronous request to the server

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bunless the call processing is complete

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cfor the complete duration of the connection

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d unless the server is disconnected

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An RPC (remote procedure call) is initiated by the _________


aserver

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bclient

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cclient after the sever

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da third party

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View Answer client

Which of the following is true of signature-based IDSes?


aThey alert administrators to deviations from “normal” traffic behavior

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bThey identify previously unknown attacks

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cThe technology is mature and reliable enough to use on production networks

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d They scan network traffic or packets to identify matches with attack-definition files

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Which of the following is used to provide a baseline measure for comparison of IDSes?


a Crossover error rate

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bFalse negative rate

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c False positive rate

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dBit error rate

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“Semantics-aware” signatures automatically generated by Nemean are based on traffic at which two layers?


aApplication layer and Transport layer

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bNetwork layer and Application layer

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cSession layer and Transport layer

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dApplication layer and Session layer

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When discussing IDS/IPS, what is a signature?


aAn electronic signature used to authenticate the identity of a user on the network

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bAttack-definition file

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cIt refers to “normal,” baseline network behavior

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d It is used to authorize the users on a network

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IDS follows a two-step process consisting of a passive component and an active component. Which of the following is part of the active component?


aInspection of password files to detect inadvisable passwords

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bMechanisms put in place to reenact known methods of attack and record system responses

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c Inspection of system to detect policy violations

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dInspection of configuration files to detect inadvisable settings

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At which two traffic layers do most commercial IDSes generate signatures?


aApplication layer and Network layer

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bNetwork layer and Session Layer

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c Transport layer and Application layer

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dTransport layer and Network layer

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What is the purpose of a shadow honeypot?


aTo flag attacks against known vulnerabilities

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bTo help reduce false positives in a signature-based IDS

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cTo randomly check suspicious traffic identified by an anomaly detection system

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dTo enhance the accuracy of a traditional honeypot

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One of the most obvious places to put an IDS sensor is near the firewall. Where exactly in relation to the firewall is the most productive placement?


aInside the firewall

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b Outside the firewall

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cBoth inside and outside the firewall

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dNeither inside the firewall nor outside the firewall.

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View Answer Inside the firewall

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