Which program lists information about files and network connections opened by processes? (Specify ONLY the command without any path or parameters.)
Answer : lsof, /usr/bin/lsof
Which of the following are common Linux filesystem types used for root partitions?
(Choose THREE correct answers.)
Answer : A,D,E
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?
Answer : A
Which command will report information on memory usage, paging and block input/output?
Answer : E
In the following output, what percentage of time was the CPU waiting for pending I/O?
# vmstat 1 100
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa
0 0 0 282120 134108 5797012 0 0 0 2 0 0 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1007 359 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1117 577 0 0 100 0
0 0 0 282120 134108 5797012 0 0 0 0 1007 366 0 0 100 0
Answer : A
Which of the following files will be looked for and used by GNU make, if one of them exists, unless a different file is specified on the command line when trying to compile software from source code? (Choose TWO correct answers.)
Answer : CD
Which of the following commands can be used to script interactions with various TCP or
UDP services?
Answer : B
What are the options to node.startup in the iscsid.conf file? (Choose TWO correct answers.)
Answer : C,E
A system with SysV-init has a service installed called apache2. Which file controls the start and stop of this service and is referenced by the various runlevel directories?
Answer : A
When is historical data of resource usage important? (Select THREE correct answers.)
Answer : A,D,E
What is the full path to the directory which contains the scripts (or links to the original scripts) to run while the system boots to SysV-init runlevel 2?
Answer : /etc/rc2.d, /etc/rc2.d/, /etc/init.d/rc2.d, /etc/init.d/rc2.d/
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
Answer : D
After configuring a new kernel, what file under /usr/src/linux/ contains the configuration?
Answer : /usr/src/linux/.config, .config
Which of the following is a side effect of extensive usage of swap space?
Answer : B
Which directory contains the system-specific udev rule files? (Specify the absolute path including the directory name)
Answer : /etc/udev/rules.d, /etc/udev/rules.d/
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