Deck 12: Operating System Management

Question 1

Disk access is much slower than RAM (random access memory).

Answer 1

True

Question 2

What CentOS 7 command will allow a system administrator to view statistics in real time?

A)real
B)top
C)stat
D)cat

Answer 2

B

Question 3

What term best describes the level of performance you can reliably expect during typical usage and workloads?

A)operation
B)normal
C)baseline
D)history

Answer 3

C

Question 4

What option combined with the Kill command will make it considered stronger?

A)-9
B)-1
C)0
D)10

Question 5

To view the amounts of free, used, and swap memory in the CentOS 7 operating system, what command should you use?

A)top
B)free
C)vmstat
D)watch free

Question 6

In Windows 10, how many threads per process must a sustained processor queue be under to be considered normal?

A)12
B)15
C)20
D)25

Question 7

In Windows 10, which Task Manager tab can be used to get a quick view of your computer's CPU, memory, disk, and network usage?

A)Processes
B)Applications
C)Services
D)Performance

Question 8

What combined with the Kill command in CentOS 7 can be used in the CLI to stop a process?

A)ID
B)PDI
C)Process tag
D)PID

Question 9

In Windows 10, what feature allows you to access system tools that require administrative privileges to determine the cause of a problem?

A)Author
B)Run As
C)Open With
D)Send To

Question 10

What tab in Task Manager allows you to view a "heat map" of current resource utilization?

A)Processes
B)Applications
C)Services
D)Performance

Question 11

The Windows 10 Task Manager is for monitoring active applications and processes; however, it cannot be used to stop active applications and processes.

Question 12

Child processes will always spawn parent processes.

Question 13

What count should not exceed a manufacturer's recommendations when monitoring disk performance?

A)swap writes/sec
B)disk writes/sec
C)start writes/sec
D)disk rev/sec

Question 14

In Windows 10, which Task Manager tab is not available to computer systems in a domain network?

A)Users
B)Performance
C)Services
D)Processes

Question 15

To stop a process while using the processes tab in Task Manager you should select the program, right-click it, click End task, and then select which option?

A)End
B)Stop Process
C)Confirm
D)End Process

Question 16

The first two tabs in the CentOS 7 System Monitor are Processes and Resources; what is the third tab?

A)Users
B)Networking
C)File Systems
D)Applications

Question 17

The CentOS 7 Automatic Bug Reporting Tool (ABRT) daemon resides in the background and watches for application crashes.
Indicate the answer choice that best completes the statement or answers the question.

Question 18

When a program or command is executed in CentOS 7 the kernel assigns an identification to the process, what is this identification number called?

A)SUID
B)PID
C)GUID
D)UID

Question 19

What tab should a CentOS 7 administrator use in System Monitor to view the usage history of their system's swap memory?

A)Resources tab
B)Processes tab
C)Memory tab
D)File System tab

Question 20

A low rate of page file activity indicates that more RAM is required.

Question 21

What CentOS 7 command will report on on process status, memory consumption, paging activity, I/O operations, and CPU usage?

A)vmstat
B)mastat
C)free
D)system

Question 22

Match each item with a statement below.
a.ps command
b.PID
c.baseline
d.pseudo-file system
e.uptime command
f.bottleneck
g.kill command
h.vmstat command
i.watch free command
j./proc file system
command-line reporting and control information system in CentOS 7 that directly interfaces with the kernel and is stored in memory

Question 23

Match each item with a statement below.
a.ps command
b.PID
c.baseline
d.pseudo-file system
e.uptime command
f.bottleneck
g.kill command
h.vmstat command
i.watch free command
j./proc file system
A system that acts like a file system but is specially constructed to interface with specific areas in a system

Question 24

Match each item with a statement below.
a.ps command
b.PID
c.baseline
d.pseudo-file system
e.uptime command
f.bottleneck
g.kill command
h.vmstat command
i.watch free command
j./proc file system
A command used in CentOS 7 to run a command repeatedly

Question 25

In Performance Monitor, what indicator can be used to check how busy a particular disk is?

A)Disk Stat
B)Swap Space
C)% Swap
D)% Disk Time

Question 26

Match each item with a statement below.
a.ps command
b.PID
c.baseline
d.pseudo-file system
e.uptime command
f.bottleneck
g.kill command
h.vmstat command
i.watch free command
j./proc file system
A performance problem that occurs when multiple processes are competing for resources and all of them converge on the same resource at once

Question 27

What combined with the kill command sends a signal to "hang up" a process and cleans up all associated processes?

A)-KPID
B)-9 PID
C)-SIGKILL PID
D)-SIGHUP PID

Question 28

Match each item with a statement below.
a.ps command
b.PID
c.baseline
d.pseudo-file system
e.uptime command
f.bottleneck
g.kill command
h.vmstat command
i.watch free command
j./proc file system
A command used to stop or abort a process in a program or operating system

Question 29

Match each item with a statement below.
a.ps command
b.PID
c.baseline
d.pseudo-file system
e.uptime command
f.bottleneck
g.kill command
h.vmstat command
i.watch free command
j./proc file system
The level of performance that you can expect during typical usage and workloads

Question 30

Match each item with a statement below.
a.ps command
b.PID
c.baseline
d.pseudo-file system
e.uptime command
f.bottleneck
g.kill command
h.vmstat command
i.watch free command
j./proc file system
A number used by CentOS 7 to uniquely identify a process

Question 31

Match each item with a statement below.
a.ps command
b.PID
c.baseline
d.pseudo-file system
e.uptime command
f.bottleneck
g.kill command
h.vmstat command
i.watch free command
j./proc file system
A command used in CentOS 7 to provide a "snapshot" of the processes that are running

Question 32

Which CentOS 7 vmstat basic field provides the percentage of total processor time consumed by the kernel?

A)procs
B)us
C)sy
D)id

Question 33

In CentOS 7, which command allows you to launch System Monitor?

A)system-monitor
B)gnome-system
C)gnome-system-monitor
D)monitor-system

Question 34

What Windows 10 counter indicates the amount of memory that is left after operating system allocations?

A)Cache Bytes
B)Available Mbytes
C)Pages/sec
D)Page Faults/sec

Question 35

If a CentOS 7 administrator needs to review the amount of time since the last system reboot and how many users are logged on, what command can they use?

A)time-boot
B)uptime
C)free
D)userlog

Question 36

When you are working in Performance Monitor, in the "Add Counters" dialog box, and need more information about a particular counter, what should you do?

A)right-click the counter
B)double-click counter
C)highlight the counter
D)check show description

Question 37

Match each item with a statement below.
a.ps command
b.PID
c.baseline
d.pseudo-file system
e.uptime command
f.bottleneck
g.kill command
h.vmstat command
i.watch free command
j./proc file system
A command that usually reports average values on process status, memory consumption, I/O operations, and CPU usage since the last reboot

Question 38

Match each item with a statement below.
a.ps command
b.PID
c.baseline
d.pseudo-file system
e.uptime command
f.bottleneck
g.kill command
h.vmstat command
i.watch free command
j./proc file system
A command that displays the amount or percentage of time a computer system or associated hardware is functioning and available for use

Question 39

Which CentOS 7 vmstat basic field provides the percentage of total processor time spent in I/O wait?

A)wa
B)us
C)id
D)sy

Question 40

In Windows 10, when the Pages/sec counter exceeds the value 20 in Performance Monitor it indicates you need to analyze what type of activity?

A)network
B)usage
C)paging
D)system

Question 41

How is the kill command used in CentOS 7?

Question 42

How do you investigate whether a running service is tied to a particular process in Windows 10?

Question 43

What is the free command used for in CentOS 7?

Question 44

What is the top command used for in CentOS 7 ?

Question 45

Describe the purpose of the Automatic Bug Reporting Tool (ABRT) in CentOS 7.

Question 46

What type of CentOS 7 system-related tasks is the /proc file system used for?

Question 47

How is the Processes tab in the CentOS 7 System Monitor used?

Question 48

How is the Services tab in the Windows 10 Task Manager used?

Question 49

Describe the function and goal of Reliability Monitor in Windows 10.

Question 50

What are the advantages of using the performance-monitoring tools in Windows 10 and CentOS 7 for real-time and periodic observation?