A. SELECT name address FROM contacts;

B. SELECT (name address) FROM contacts;

C. SELECT name, address FROM contacts;

D. SELECT (name, address) FROM contacts;

A. export LANGUAGE="pt"

B. export MESSAGE="pt"

C. export LC_MESSAGES="pt"

D. export UI_MESSAGES="pt"

E. export ALL_MESSAGES="pt"

A. Shadow passwords are stored in plain text and can be checked for weak passwords.

B. Every shadow password is valid for 45 days and must be changed afterwards.

C. The system's host key is used to strongly encrypt all shadow passwords.

D. Regular users do not have access to the password hashes of shadow passwords.

E. Shadow passwords are always combined with a public key that has to match the user's private key.

A. Add the specific user to the/etc/at.denyfile.

B. Add the specific user to the/etc/ at.allowfile.

C. Runatd --denyfollowed by the name of the specific user.

D. Add the specific user to thenojobsgroup.

E. Add the specific user to the [deny] section in the/etc/std.conffile.

A. ssh -o GatewayPort=2222 example.com

B. ssh --port 2222 example.com

C. ssh -p 2222 example.com

D. ssh example.com:2222

E. ssh -o Port=2222 example.com

A. 1
2
3
4

B. 1
5
10
15

C. 1
6
1
1
1
6

D. 5
10
15
20

E. 2
3
4
5

A. xinetd

B. fingerd

C. tcpd

D. inetd

E. mountd

A. unset -v FOOBAR;./myscript

B. set -a FOOBAR="";./myscript

C. env -i FOOBAR./myscript

D. env -u FOOBAR./myscript