Free 201-450 Exam Braindumps

Which of the following commands will provide the PIDs of the processes sorted by which are using the most CPU cycles on the Linux system?

1. A. top
2. B. uptime
3. C. ps aux
4. D. vmstat
5. E. freemem

Correct Answer: A

Which of the following configuration files are used by tcpwrapper?

1. A. /etc/tcpd.allow and etc/tcpd.deny
2. B. /etc/tcpwrapper.allow and /etc/tcpwrapper.deny
3. C. /etc/hosts.allow and /etc/hosts.deny
4. D. /etc/service.allow and /etc/service.deny

Correct Answer: C

Which command can be used to scan a specified network looking for IP addresses that appear to be in use?

1. A. nmap
2. B. tcpdump
3. C. ip
4. D. netscan
5. E. hostdiscover

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

Under which of the following circumstances would the command ping output the string (DUP!)?

1. A. When the ICMP packets are send to a broadcast address and multiple hosts respond.
2. B. When the host being sent ICMP packets is on a different network.
3. C. When the router responds to the ICMP packet in addition to the host receiving the ICMP packets.
4. D. When the host sending the ICMP packet is the same host as the one receiving the ICMP packets.

Correct Answer: A