What is true regarding TCP port 23? A. Port 23 is the well known port for the telnet service which is a plain text protocol that should no longer be used. B. Port 23 is the well known port for the SS...

Which of the following may occur as a consequence of using the command ifconfig? (Choose THREE correct answers.) A. New name servers may be added to the resolver configuration. B. Network interfaces ...

Which of the following keywords can be used in the file /etc/nsswitch.conf to specify a source for host name lookups? (Choose TWO correct answers.) A. resolv B. dns C. remote D. files E. hosts

Which of the following lines are valid in the file /etc/hosts? (Choose TWO correct answers.) A. 2001:db8::15 www.example.com www B. www.example.com www 203.0.13.15 C. 203.0.113.15 www.example.com www...

What is true regarding a default route? A. The default route is always used first. When the default route is not available more specific routes are tried. B. When a default route is set, all other ro...

Which parameter must be passed to ifconfig to activate a previously inactive network interface? (Specify the parameter only without any command, path or additional options)

Which command is used to set the hostname of the local system? (Specify ONLY the command without any path or parameters.)

Which of the following is true about IPv6? A. With IPv6, the TCP port numbers of most services have changed. B. IPv6 no longer supports broadcast addresses. C. IPv4 addresses can be used without any ...

Which of the following commands can be used to display the local routing table? (Choose TWO correct answers.) A. ifconfig B. dig C. netstat D. route E. trackroute

Which of the following details is NOT provided in any output from the netstat utility? A. broadcast services B. interface statistics C. masquerading connections D. network connections E. routing tabl...