201-450 Free Practice Test

After configuring a new kernel, what file under /usr/src/linux/ contains the configuration?
Solution:
/usr/src/linux/.config, .config

Does this meet the goal?

1. A. Yes
2. B. No

Correct Answer: A

What does the -p3 option to the patch command do?

1. A. It will strip off path information from each file mentioned in the patch file up to and including the third / character.
2. B. patch continues execution as long as there are three or fewer errors.
3. C. It instructs patch to look up to three lines of context before or after the declared line in the original file for a match.
4. D. patch will keep three previous versions of each file in the output to prevent loss of change history.
5. E. It instructs patch to conform more strictly to the POSIX standard.

Correct Answer: A

According to the tcpdump output below, what is the IP address of the client host?
02:12:40.511381 IP 192.168.246.11.1045 > 192.168.246.1.22: S 3838532429:3838532429(0) win 5840 1460,sackOK,timestamp 31325740,nop,wscale 2>
02:12:40.511540 IP 192.168.246.1.22 > 192.168.246.11.1045: S 1209330085:1209330085(0) ack 383853
2430 win 5792
02:12:40.511755 IP 192.168.246.11.1045 > 192.168.246.1.22: . ack 1 win 1460 11553457>
02:12:40.515122 IP 192.168.246.1.22 > 192.168.246.11.1045: P 1:26(25) ack 1 win 5792 11553460 3132574>
02:12:40.515511 IP 192.168.246.11.1045 > 192.168.246.1.22: . ack 26 win 1460 3132578 11553460>
02:12:40.515952 IP 192.168.246.11.1045 > 192.168.246.1.22: P 1:23(22) ack 26 win 1460

Solution:
192.168.246.11

Does this meet the goal?

1. A. Yes
2. B. No

Correct Answer: A

Which of the following wireless tools can be used to check the wireless network link quality? (Choose TWO correct answers.)

1. A. iwconfig
2. B. iwlink
3. C. iwscan
4. D. iwifi
5. E. iw

Correct Answer: AE

In which directory tree are files modified when changing kernel parameters using the command sysctl?

1. A. /sys/kernel/
2. B. /proc/kernel/
3. C. /proc/sys/
4. D. /lib/sys/
5. E. /sys/proc/

Correct Answer: C