102-400 Online Practice Questions and Answers

What word is missing from the following SQL statement?

insert into tablename ________(909, 'text');

(Please specify the missing word using lower-case letters only.)

Which of the following commands shows the current color depth of the X Server?

A. xcd

B. xcdepth

C. xwininfo

D. xcolordepth

E. cat /etc/X11

Which file contains the date of the last change of a user's password?

A. /etc/gshadow

B. /etc/passwd

C. /etc/pwdlog

D. /etc/shadow

E. /var/log/shadow

Which of the following are commonly used Mail Transfer Agent (MTA) applications? (Choose THREE correct answers.)

A. Postfix

B. Procmail

C. Sendmail

D. Exim

E. SMTPd

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 tables

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 tools used for DNS debugging, reports not only the response from the name server but also details about the query?

A. dnsq

B. dig

C. hostname

D. dnslookup

E. zoneinfo

On a regular users workstation the route command takes a long time before printing out the routing table.

Which of the following errors does that indicate?

A. The local routing information may be corrupted and must be re-validated using a routing protocol.

B. One of the routers in the routing table is not available which causes the automatic router failure detection mechanism (ARF-D) to wait for a timeout.

C. There may accidentally be more than one default router in which case a default router election has to be done on the network in order to choose one router as the default.

D. DNS resolution may not be working as route by default tries to resolve names of routers and destinations and may run into a timeout.

Which configuration file would be edited to change default options for the OpenSSH server?

A. /etc/ssh/sshd_config

B. /etc/ssh/ssh

C. /etc/ssh/server

D. /etc/ssh/ssh_config

E. /etc/ssh/ssh_server

What is a purpose of an SSH host key?

A. It must be sent by any SSH client in addition to a user key in order to identify the client's host.

B. It provides the server's identity information to connecting SSH clients.

C. It is the root key by which all user SSH keys must be signed.

D. It authenticates any user that logs into a remote machine from the key's host.

E. It is used by system services like cron, syslog or a backup job to automatically connect to remote hosts.