1. Which of the following is a valid IP Address?
A. 1.1
B. 1.1.1.1.1
C. 1.0.1.0.1.0.1
D. 2401:700o:a102:d200:21d:43ff:fee0:1b9a
2. Which of the following is the best software to generate a random string?
A. OpenSMTPD
B. OpenLDAP
C. OpenSSL
D. OpenSSH
3. Which of the following is not a common Linux command?
A. yes
B. no
C. mesg
D. sleep
4. A certain time T expressed as seconds since 1970-01-01 00:00:00 UTC, concatenated with a line feed, produces a hash string of "08fb227e05dde85e1466108e87ae4f91" in message digest 5 algorithm computation. Now, express time T in yyyymmdd format (eg. 19700101)
5. What is the best way to comment out the echo statement in the following code block for bash?
if [ x == x ] then echo I am here\! fi