102-500 Free Practice Test

- (Exam Topic 1)
What benefit does an alias in bash provide?

1. A. It provides faster lookups for commands in the system directory.
2. B. It creates a local copy of a file from another directory.
3. C. It hides what command you are running from others.
4. D. It allows a string to be substituted for the first word of a simple command.

Correct Answer: D

- (Exam Topic 1)
What word is missing from the following SQL statement?
_____ count(*) from tablename;
(Please specify the missing word using lower-case letters only.)
Solution:
select

Does this meet the goal?

1. A. Yes
2. B. No

Correct Answer: A

- (Exam Topic 5)
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?

1. A. The local routing information may be corrupted and must be re-validated using a routing protocol.
2. 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.
3. 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.
4. 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.

Correct Answer: D

- (Exam Topic 1)
Which of the following configuration files should be modified to set default shell variables for all users?

1. A. /etc/bashrc
2. B. /etc/profile
3. C. ~/.bash_profile
4. D. /etc/.bashrc

Correct Answer: B

- (Exam Topic 3)
Which crontab entry could be used to set the system time at regular intervals?

1. A. 1 0 * * * date $d $t $24
2. B. 1 0 * * * ntpdate ntp1.digex.net
3. C. 1 0 * * * date ntp1.digex.net
4. D. 1 0 * * * runcron date ntp1.digex.net
5. E. 1 0 * * * settime $d $t $24

Correct Answer: B