Which of the following is designed to detect unwanted changes by observing the flame of the environment
associated with combustion?

• A.Smoke alarm system
• B.None
• C.Gaseous fire-extinguishing systems
• D.sprinkler
• E.Fire extinguishing system

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Which of the following is a maintenance protocol that permits routers and host computers to swap basic control information when data is sent from one computer to another?

• A.IGMP
• B.ICMP
• C.SNMP
• D.BGP

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Which of the following tools is used to ping a given range of IP addresses and resolve the host name of the remote system?

• A.Hping
• B.SuperScan
• C.Netscan
• D.Nmap

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Disaster Recovery is a _________.

• A.Operation-centric strategy
• B.Security-centric strategy
• C.Data-centric strategy
• D.Business-centric strategy

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Which command is used to change the permissions of a file or directory?

• A.rmdir
• B.systemctl
• C.kill
• D.chmod

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