Deck 12: System Management

Question 1

Any system improvement can be made only after extensive analysis of the needs of the system's resources, requirements, managers, and users.

Answer 1

True

Question 2

Blocking increases the number of physical I/O requests.

Answer 2

False

Question 3

Resource utilization is usually measured as a percentage of time that the resource is idle.

Answer 3

False

Question 4

Increasing the number of processors necessarily increases overhead required to manage multiple jobs among multiple processors.

Question 5

The performance of each system resource is independent of any other resource.

Question 6

The location of a volume's directory on the disk never makes a significant difference in the time it takes to access it.

Question 7

With every patch announcement, system attackers are also armed with this critical information, and they will move quickly to compromise your system.

Question 8

Rescheduling requests is a technique that can help optimize I/O times.

Question 9

It is possible to turn the reordering algorithm either on or off during normal system operation.

Question 10

Patch management is a simple task that does not require much time or effort.

Question 11

The advantage of routine patch cycles is that they allow for thorough review of the patch and testing cycles before deployment.

Question 12

If a file is stored noncontiguously and has several sections residing in widely separated cylinders of a disk pack, sequentially accessing all of its records could be a time-consuming task.

Question 13

Availability in its simplest form means that a unit will be operational and not out of service when a user needs it.

Question 14

It is easy to measure system efficiency.

Question 15

Most operating systems were designed to work with a certain piece of hardware, a category of processors, or specific groups of users.

Question 16

The Network Manager allows a network administrator to monitor the use of individual computers and shared hardware, and ensure compliance with software license agreements.

Question 17

If you buy a terminal with an MTBF of 4000 hours, and you plan to use it for four hours a day for 20 days a month, then you would expect it to fail once every five months.

Question 18

Deploying a patch to a large network is not much more complicated than deploying a patch on a single computer.

Question 19

Throughput and capacity can be monitored by either hardware or software.

Question 20

Capacity is a composite measure that indicates the productivity of the system as a whole.

Question 21

Deployment software falls into two groups: ____.

A) structured and unstructured
B) secure and insecure
C) automatic and manual
D) agent-based and agentless

Question 22

____ requires a great deal of synchronization between the Memory Manager, the Processor Manager, and the I/O devices.

A) Programming
B) Multi-threaded programming
C) Multi-device management
D) Multiprogramming

Question 23

When networked devices, such as printers, plotters, or disk drives are required, the ____ has the responsibility of allocating and deallocating the required resources correctly.

A) Network Controller
B) Network Device Controller
C) Network Resource Director
D) Network Manager

Question 24

If a file is stored ____ and has several sections residing in widely separated cylinders of a disk pack, sequentially accessing all of its records could be a time-consuming task.

A) randomly
B) noncontiguously
C) contiguously
D) on several volumes

Question 25

____ is/are usually measured under steady-state conditions and reflects quantities such as "the number of jobs processed per day" or "the number of online transactions handled per hour."

A) Capacity
B) Turnaround time
C) Throughput
D) Bottlenecks

Question 26

By offering reduced rates during off hours, some users might be persuaded to run long jobs in batch mode inexpensively overnight instead of interactively during peak hours.

Question 27

As the memory management algorithms grow more complex, ____.

A) CPU use decreases
B) CPU overhead increases
C) buffers are required
D) system performance improves

Question 28

The overall responsibility of keeping an organization's patches up-to-date is ____.

A) The Chief Information Officer.
B) The Chief Security Officer.
C) The network administrator.
D) It depends on the organization.

Question 29

Assume that a system consisting of CPU 1 and Disk Drive A has to access Track 1, Track 9, Track 1, and then Track 9, and that the arm is already located at Track 1. Without reordering, Drive A requires ____ to complete the access. CPU1 time for 1000 instructions: 30.0 ms
Drive A access speed: 35 ms

A) 30 ms
B) 35 ms
C) 70 ms
D) 105 ms

Question 30

Memory management is intrinsically linked with ____ management when memory is used to buffer data between a very fast processor and slower secondary storage devices.

A) device
B) disk
C) process
D) processor

Question 31

____ helps the CPU match the slower speed of I/O devices.

A) Prioritizing
B) Rescheduling
C) Buffering
D) Blocking

Question 32

The first step in testing a patch is ____.

A) testing your contingency plans to uninstall the patch
B) checking to see if the patched software performs its assigned tasks
C) testing to see if the system restarts after the patch is installed
D) testing to see whether the patch disrupts normal system operations

Question 33

Benchmarks are often used by vendors to demonstrate to prospective clients the specific advantages of a new CPU, operating system, compiler, or piece of hardware.

Question 34

The first thing that an administrator should do upon notification of a new patch is ____.

A) Identify the criticality of the patch.
B) Deploy the patch.
C) Test the patch.
D) Ignore the notification and let automatic updates handle the patch.

Question 35

____ is needed to achieve success in deploying a patch to a large network.

A) Automated patch installation software
B) An accurate inventory of all hardware and software on those computers that need the patch
C) External patch management hardware
D) Launching the deployment on all the computers at the same time

Question 36

Because ____ have authority to write over existing programming code, they can be especially damaging if they are not valid.

A) kernel patches
B) administrator patches
C) system updates
D) software patches

Question 37

If directories are stored on the ____ track, then, on average, the disk drive arm has to travel farther to access each file than it would if the directories were kept in the center tracks.

A) outermost
B) innermost
C) master
D) volume

Question 38

A positive feedback loop mechanism monitors the system and, when it becomes too congested, signals the Job Scheduler to slow down the arrival rate of the processes.

Question 39

In a multiuser environment, computer costs are usually distributed among users based on the budget for each department.

Question 40

An algorithm for a positive feedback loop should monitor the effect of new arrivals in two places: the Processor Manager's control of the CPU and the Device Manager's read and write operations.

Question 41

A danger of positive feedback loops is that ____.

A) if too many new jobs are allowed to enter the job stream, the result can be an increase in page faults
B) a single job will be allowed to run to completion and slow down the system
C) it increases the chance of deadlock
D) as more jobs enter, the amount of main memory allocated to each job decreases

Question 42

____ is a measure of how much each unit is contributing to the overall operation.

A) Network utilization
B) Resource allocation
C) Resource utilization
D) Availability

Question 43

The disadvantage of maintaining billing records online is ____.

A) overhead
B) security
C) user access
D) updating

Question 44

When providing accounting for computer use, secondary storage used during the billing period is usually given in terms of ____.

A) type of storage device
B) units of time
C) bytes of storage
D) the number of disk tracks allocated

Question 45

____ is similar to availability but it measures the probability that a unit will not fail during a given time period and it is a function of MTBF.

A) Response likelihood
B) Reliability
C) Scalability
D) Operability

Question 46

The formula used to calculate availability is ____.

A) MTBF * (MTBF - MTTR)
B) MTBF / (MTBF - MTTR)
C) MTBF * (MTBF + MTTR)
D) MTBF / (MTBF + MTTR)

Question 47

A negative feedback loop mechanism monitors the system and, when it becomes too congested, signals the Job Scheduler to ____.

A) send the jobs to another processor
B) suspend processing
C) slow down process arrival rate
D) speed up process arrival rate

Question 48

A disadvantage of software monitoring tools over hardware monitoring tools is ____.

A) They are more difficult to install.
B) They become part of the system can therefore distort the results of the analysis.
C) They are more expensive.
D) They are not secure.

Question 49

Bottlenecks tend to develop ____.

A) when the system is underutilized
B) when resources reach their capacity
C) when the system is mismanaged
D) in a deadlocked system

Question 50

With reference to batch jobs, response time is called ____ time.

A) turnaround
B) job
C) batch
D) completion