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Question 1

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In capacity planning exercises, which tools assist in listing and identifying processes of interest?

(Choose TWO correct answers.)

acpid
acpid
lsof
lsof
pstree
pstree
telinit
telinit
Suggested answer: B, C
asked 18/09/2024
Yassin Benjajji
45 questions

Question 2

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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

Processes waiting for user interaction.
Processes waiting for user interaction.
Processes that were already closed and are waiting to be launched again.
Processes that were already closed and are waiting to be launched again.
Processes that have not been scheduled yet because they haven't been fully loaded into RAM or are in swap.
Processes that have not been scheduled yet because they haven't been fully loaded into RAM or are in swap.
Processes waiting for IO operations to complete.
Processes waiting for IO operations to complete.
Suggested answer: D
asked 18/09/2024
Morten Sivertsen
33 questions

Question 3

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In the below example output, which columns detail the percent of time the CPU spent running nonkernel code and the percent of time the CPU spent running kernel code? (Choose TWO correct answers.)

# 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

id
id
us
us
wa
wa
sy
sy
Suggested answer: B, D
asked 18/09/2024
Mehdi BELGAS
54 questions

Question 4

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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

0
0
100
100
35.9
35.9
57.7
57.7
36.6
36.6
Suggested answer: A
asked 18/09/2024
david tsai
50 questions

Question 5

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Which commands below are useful to collect data about remote filesystem connections? (Choose TWO correct answers.)

pidstat
pidstat
nfsiostat
nfsiostat
sadf
sadf
cifsiostat
cifsiostat
Suggested answer: B, D
asked 18/09/2024
Vincent Scotti
38 questions

Question 6

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In the following output, the load averages represent the system load averages for what time frames?

12:10:05 up 18 days, 19:00, 2 users, load average: 0.47, 24.71, 35.31

1, 5 and 15 minutes
1, 5 and 15 minutes
1, 15 and 30 minutes
1, 15 and 30 minutes
1, 15, and 30 seconds
1, 15, and 30 seconds
15, 30 and 60 minutes
15, 30 and 60 minutes
15, 30 and 60 seconds
15, 30 and 60 seconds
Suggested answer: A
asked 18/09/2024
david tsai
50 questions

Question 7

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When planning a web server which of the following choices will impact system sizing? (Choose THREE correct answers.)

How many concurrent users are expected.
How many concurrent users are expected.
Which hardware vendor has better Linux support.
Which hardware vendor has better Linux support.
What type of content will be served.
What type of content will be served.
What scripting languages will the web server support.
What scripting languages will the web server support.
Will the OS install be CD, DVD or network based.
Will the OS install be CD, DVD or network based.
Suggested answer: A, C, D
asked 18/09/2024
Mk Cheng
50 questions

Question 8

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What mechanism does collectd use to gather monitoring information on systems?

It uses a library of plugins.
It uses a library of plugins.
A master server connects to a collectd service on each machine to retrieve the information.
A master server connects to a collectd service on each machine to retrieve the information.
It collects its own information on each server and sends that to a master server.
It collects its own information on each server and sends that to a master server.
It makes SNMP queries to the clients being monitored.
It makes SNMP queries to the clients being monitored.
Suggested answer: A
asked 18/09/2024
Shady Mohamed Ibrahim
35 questions

Question 9

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Which of the following tools are used to measure memory usage? (Choose THREE correct answers.)

mpstat
mpstat
pstree
pstree
sar
sar
top
top
vmstat
vmstat
Suggested answer: C, D, E
asked 18/09/2024
Sjoerd Kruit
41 questions

Question 10

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Which of the following is a side effect of extensive usage of swap space?

The root filesystem may become full because swap space is always located on the system root partition.
The root filesystem may become full because swap space is always located on the system root partition.
The overall system performance may degrade because of heavy hard disk use and memory reorganization.
The overall system performance may degrade because of heavy hard disk use and memory reorganization.
Since processes always exist completely in either RAM or swap, regular RAM may become unused if the kernel does not move processes back from the swap space to memory.
Since processes always exist completely in either RAM or swap, regular RAM may become unused if the kernel does not move processes back from the swap space to memory.
The memory may become fragmented and slow down the access to memory pages. However, this can be kept to a minimum by the regular use of memfrag -d.
The memory may become fragmented and slow down the access to memory pages. However, this can be kept to a minimum by the regular use of memfrag -d.
Applications need to restart because their virtual memory addresses change to reflect memory relocation to the swap address area.
Applications need to restart because their virtual memory addresses change to reflect memory relocation to the swap address area.
Suggested answer: B
asked 18/09/2024
DANIEL DOYEN
43 questions
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