Which of the following properties should be recorded in order to monitor the quality of a network link? (Choose two.)

1. A. Bandwidth in both directions
2. B. Number of nodes using the link
3. C. Effective Latency
4. D. Number of IPv4 and IPv6 packets
5. E. Number of used TCP ports

Correct Answer: AC

The following is an excerpt from the output of tcpdump -nli eth1:
13:03:17.277327 IP 192.168.123.5.1065 > 192.168.5.112.21: Flags [.], ack 1 (truncated)
13:03:17.598624 IP 192.168.5.112.21 > 192.168.123.5.1065: Flags [P.], seq (truncated)
Which network service or protocol was used?

1. A. FTP
2. B. HTTP
3. C. SSH
4. D. DNS
5. E. DHCP

Correct Answer: A

In the following output from top, which processes contribute to the percentage of time that the CPU spends in the state of wa?
Tasks: 193 total, 1 running, 190 sleeping, 2 stopped, 0 zombie
Cpu(s): 0.5%us, 0.3%sy, 0.0%ni, 98.2%id, 1.0%wa, 0.0%hi, 0.0%si, 0.0%st

1. A. Processes waiting for user interaction.
2. B. Processes that were already closed and are waiting to be launched again.
3. C. Processes that have not been scheduled yet because they haven't been fully loaded into RAM or are in swap.
4. D. Processes waiting for IO operations to complete.

Correct Answer: D

Which of the following best describes the format of the /etc/fstab file?

1. A. device name; filesystem type; mount point; mount options; dump filesystem; fsck order
2. B. device name; mount point; filesystem type; mount options; dump filesystem; fsck order
3. C. device name; mount point; mount options; filesystem type; dump filesystem; fsck order
4. D. mount point; filesystem type; device name; mount options; dump filesystem; fsck order
5. E. mount point; device name; filesystem type; mount options; dump filesystem; fsck order

Correct Answer: B

Which of the following commands displays the physical path of the kernel module named dummy?

1. A. modprobe –i dummy
2. B. modinfo –n dummy
3. C. modpath –v dummy
4. D. depmod –n dummy
5. E. modshow –p dummy

Correct Answer: A