問題1
Which of the following should the permission settings be for /etc/passwd and /etc/shadow?
Which of the following should the permission settings be for /etc/passwd and /etc/shadow?
正確答案: D
問題2
Which of the following commands allows an administrator to make a shell variable visible to subshells?
Which of the following commands allows an administrator to make a shell variable visible to subshells?
正確答案: A
問題3
In the following command and its output, echo $$ 12942 which of the following is 12942?
In the following command and its output, echo $$ 12942 which of the following is 12942?
正確答案: D
問題4
Why is the xhost program considered dangerous to use?
Why is the xhost program considered dangerous to use?
正確答案: D
問題5
Suppose that the command netstat -a hangs for a long time without producing output. An administrator might suspect:
Suppose that the command netstat -a hangs for a long time without producing output. An administrator might suspect:
正確答案: A
問題6
CORRECT TEXT
Which IP protocol is connectionless and unreliable? (Please enter only a single answer and do not enter duplicate answers in this field.)
CORRECT TEXT
Which IP protocol is connectionless and unreliable? (Please enter only a single answer and do not enter duplicate answers in this field.)
正確答案:
UDP,
UDP, UDP/IP, UDP/IP
UDP, UDP/IP, UDP/IP
問題7
An administrator discovers a pending job for the at command. Which of the following does the administrator need to use to remove it?
An administrator discovers a pending job for the at command. Which of the following does the administrator need to use to remove it?
正確答案: C
問題8
CORRECT TEXT
Which file contains a list of services and hosts that will be denied by a TCP Wrapper such as tcpd? (Please enter the full path).
CORRECT TEXT
Which file contains a list of services and hosts that will be denied by a TCP Wrapper such as tcpd? (Please enter the full path).
正確答案:
/ETC/HOSTS.DENY
問題9
Which of the following commands should be added to /etc/bash_profile to change the language of messages from an internationalised program to Portuguese (pt)? (Select TWO).
Which of the following commands should be added to /etc/bash_profile to change the language of messages from an internationalised program to Portuguese (pt)? (Select TWO).
正確答案: C,E
問題10
CORRECT TEXT
After configuring printing on a Linux server, the administrator sends a test file to one of the printers and it fails to print. What command can be used to print the status of the printer's queue? (Provide only the command, without any options or parameters)
CORRECT TEXT
After configuring printing on a Linux server, the administrator sends a test file to one of the printers and it fails to print. What command can be used to print the status of the printer's queue? (Provide only the command, without any options or parameters)
正確答案:
lpq, /usr/bin/lpq
問題11
CORRECT TEXT
With IPv6, how many bits have been used for the host identifier portion of an address? (Please enter the number and not a word)
CORRECT TEXT
With IPv6, how many bits have been used for the host identifier portion of an address? (Please enter the number and not a word)
正確答案:
64
問題12
For accessibility assistance, which of the following programs is an on-screen keyboard?
For accessibility assistance, which of the following programs is an on-screen keyboard?
正確答案: A