When using ssh, which of the following can an administrator do to recover a lost passphrase for a DSA or RSA authentication key?
A. Run the ssh-keygen command.
B. Run the ssh –recover command.
C. A lost passphrase cannot be recovered.
D. Decrypt the authentication key with gpg.
E. Decrypt the authentication key with ssh –decrypt.
Which of the following describes the Linux ping packet or datagram?
A. IP packet with a packet type
B. ICMP packet with a message type
C. ICMP packet with a payload
D. UDP datagram with a protocol type E. UDP datagram with a payload
Which of the following entries can an administrator add to syslog.conf file to have all syslog messages generated by the administrator system go file to have all syslog messages generated by the administrator? system go to virtual console 12?
A. *.* /dev/tty12
B. /var/log/messages | /dev/tty12
C. | /dev/tty12
D. syslog tty12
E. mail.* /dev/tty12
QUESTION 54 CORRECT TEXT
Which file specifies the user accounts can NOT submit jobs via at or batch? (Provide the full path and filename).
QUESTION 55 CORRECT TEXT
The ________ command is used to add a group to the system. (Please enter only a single command and do not enter duplicate answers in this field.)
A. administrator has just set up the X Display Manager as the default display manager. Which of the following files should be edited to change the default background for it?
QUESTION 57 CORRECT TEXT
What word is missing from the following SQL statement? updatetablename ____ fieldname=’value’ where id=909;
QUESTION 58 CORRECT TEXT
What is the command to delete the default gateway from the system IP routing table? (Please specify the complete command with arguments, please no duplicate answers in this field.)
Answer: /SBIN/IPROUTEDEL0.0.0.0,/SBIN/IPROUTEDELDEFAULT,/SBIN/ROUTEDEL0.0.0.0,/SBIN/ROU TEDELDEFAULT,IPROUTEDEL0.0.0.0,IPROUTEDELDEFAULT,ROUTEDEL0.0.0.0,ROUTEDEL DEFAULT
A. administrator is running an email server configured with the default settings. In which directory will the administrator commonly find the delivered mail for the user foo?
For accessibility assistance, which of the following programs is an on-screen keyboard?