How many IP addresses were left for other hosts to be connected?
A new department’s local area network has to be connected to the existing LAN using a router. This new department’s LAN uses IP addresses from 192.168.112.64/26 and the first free IP address there was reserved for the router.
How many IP addresses were left for other hosts to be connected?
Which file could this be from?
The following output shows an excerpt from a standard network configuration file:
time 37/udp timeserver
rlp 39/udp
name 42/udp nameserver
whois 43/tcp nickname
Which file could this be from?
Which two of the following Class B IPv4 networks are reserved by IANA for private address assignment and priva
Which two of the following Class B IPv4 networks are reserved by IANA for private address assignment and private routing?
(Choose two)
Which of the following do you have to use to remove a pending job for the at command?
You discover a pending job for the at command.
Which of the following do you have to use to remove it?
On a system using shadowed passwords, the correct permissions for /etc/passwd are _____ and the correct permis
On a system using shadowed passwords, the correct permissions for /etc/passwd are _____ and the correct permission for /etc/shadow are _____.
Which of the statements is the result of the following command?
Which of the statements is the result of the following command?
$ export PS2="[uw]\$ "
You have modified user bob’s login information. In the passwd file, you changed /bin/bash to /bin/false.
You have modified user bob’s login information. In the passwd file, you changed /bin/bash to /bin/false. What effect will this have on user bob?
You have a script called logout-users which will log out inactive users every hour between the hours of 6 p.m
You have a script called logout-users which will log out inactive users every hour between the hours of 6 p.m and 7 a.m., Monday through Friday.
Choose the best option for a crontab entry:
The system utility that automatically creates new log files and moves old ones is called what?
The system utility that automatically creates new log files and moves old ones is called what?
Which crontab entry could be used to set the system time at regular intervals?
Which crontab entry could be used to set the system time at regular intervals?