System Administrator 2026 — MCQs City

System Administrator 2026

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

A. Application layer and network layer
B. Network layer and session layer
C. Transport layer and application layer
D. Transport layer and network layer

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?

A. Inspection of password files to detect inadvisable passwords
B. Mechanisms put in place to reenact known methods of attack and record system responses
C. Inspection of system to detect policy violations
D. Inspection of configuration files to detect inadvisable settings

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

A. Application layer and transport layer
B. Network layer and application layer
C. Session layer and transport layer
D. Application layer and session layer

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

A. Crossover error rate
B. False negative rate
C. False positive rate
D. Bit error rate

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

A. They alert administrators to deviations from ?normal” traffic behavior
B. They identify previously unknown attacks
C. The technology is mature and reliable enough to use on production networks
D. They scan network traffic or packets to identify matches with attack-definition files

Both HDLC and PPP are Data link layer protocols.

A. True
B. False
C.
D.

Which protocol does the PPP protocol provide for handling the capabilities of the connection/link on the network?

A. Lcp
B. Ncp
C. Both lcp and ncp
D. Tcp

The PPP protocol _________

A. Is designed for simple links which transport packets between two peers
B. Is one of the protocols for making an internet connection over a phone line
C. Is designed for simple links which transport packets between two peers and making an internet connection over a phone line
D. Is used for sharing bandwidth

PPP provides the _______ layer in the TCP/IP suite.

A. Link
B. Network
C. Transport
D. Application

PPP consists of ________components

A. Three (encapsulating, the domain name system)
B. Three (encapsulating, a link control protocol, ncp)
C. Two (a link control protocol, simple network control protocol)
D. One (simple network control protocol)

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