You discover a pending job for the at command.
Which of the following do you have to use to remove it?
B. atq -r
C. at -r
QUESTION 352 CORRECT TEXT
You’ve downloaded an image file of a boot floppy disk to your hard drive. What is the best utility to create a boot floppy from the disk image? (Specify a single command without options.)
The following output shows an excerpt from a standard network configuration file: time 37/tcp timserver time 37/udp timeserver rlp 39/udp resource # resource location name 42/udp nameserver whois 43/tcp nickname # usually to sri-nic domain 53/tcp domain 53/udp mtp 57/tcp # deprecated bootps 67/udp # bootp server bootpc 68/udp # bootp client tftp 69/udp Which file could this be from?
QUESTION 354 CORRECT TEXT
The ________ file contains the system default options for the PPP daemon.
What is the highest numbered TCP/IP port?
Which of the following is used to establish a PPP link to another computer?
Which of the following protocols uses two different network ports?
QUESTION 358 CORRECT TEXT
You can run the ________ command to see active network and UNIX domain socket connection.
While checking your security, you discover that you can connect to one of the machines on the network via port 23. What should you do to the network service on this machine?
A. Deactivate it, you don’t need a SMTP server there.
B. Deactivate it, you should not use TELNET.
C. Leave active, SSH is safe.
D. Deactivate it, you don’t need a FTP server there.
Which of the following represents a class C netmask?
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