Which of the following IPv4 networks are reserved by IANA for private address assignment and private routing?
(Choose three.)

• A.169.255.0.0/16
• B.192.168.0.0/16
• C.172.16.0.0/12
• D.127.0.0.0/8
• E.10.0.0.0/8

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Which of the following is observed and corrected by a NTP client?

• A.Changes in the time zone of the current computer's location.
• B.The skew in time between the system clock and the reference clock.
• C.Adjustments needed to support Daylight Saving Time.
• D.The skew in time between the system clock and the hardware clock.

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How many IP addresses can be used for unique hosts inside the IPv4 subnet 192.168.2.128/26?

• A.62
• B.6
• C.14
• D.30
• E.126

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What is true about the file .profile in a user's home directory?

• A.It must be readable for its owner only.
• B.It must use a valid shell script syntax.
• C.It must start with a shebang.
• D.It must call the binary of the login shell.
• E.It must be executable.

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Which of the following can the chage command NOT change?

• A.The maximum number of days during which a password is valid.
• B.The number of days since January 1, 1970 since the password was last changed.
• C.The number of days since January 1, 1970 after which the password can change.
• D.The number of days of inactivity after a password has expired before the account is locked.
• E.The number of days since January 1, 1970 after which the user's account will no longer be accessible.

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