- (Exam Topic 5)
Which of the following is true about IPv6?

1. A. With IPv6, the TCP port numbers of most services have changed.
2. B. IPv6 no longer supports broadcast addresses.
3. C. IPv4 addresses can be used without any change with IPv6.
4. D. IPv6 no longer supports multicast addresses.
5. E. For IPv6, UDP and TCP have been replaced by the Rapid Transmission Protocol RTP.

Correct Answer: B

- (Exam Topic 3)
Each entry in a crontab must end with what character?

1. A. Tab
2. B. Space
3. C. Backslash
4. D. Newline

Correct Answer: D

- (Exam Topic 1)
When the command echo $ outputs 1, which of the following statements is true?

1. A. It is the process ID of the echo command.
2. B. It is the process ID of the current shell.
3. C. It is the exit value of the command executed immediately before echo.
4. D. It is the exit value of the echo command.

Correct Answer: C

- (Exam Topic 5)
Which of the following statements is valid in the file /etc/nsswitch.conf?

1. A. multi on
2. B. 192.168.168.4 dns-server
3. C. hosts: files dns
4. D. include /etc/nsswitch.d/

Correct Answer: C

- (Exam Topic 1)
Which of the following words is used to restrict the records that are returned from a SELECT SQL query based on a supplied criteria for the values in the records?

1. A. CASE
2. B. FROM
3. C. WHERE
4. D. IF

Correct Answer: C