Deck 12: System Management

Question 1

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.

Answer 1

True

Question 2

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

Answer 2

False

Question 3

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

Answer 3

True

Question 4

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

Question 5

Blocking I/O requests to optimize access times increases the number of physical I/O requests.

Question 6

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

Question 7

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 8

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

Question 9

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

Question 10

Benchmark results are valuable because they are not dependent upon system workload,system design and implementation,or the specific requirements of the applications loaded on the system.

Question 11

Historically,most commercial operating systems were designed to be general purpose,i.e.,to not favor any specific use or computing environment.

Question 12

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 processes.

Question 13

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

Question 14

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

Question 15

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

Question 16

The location of a volume's directory on the disk does not make a difference in the time it takes to access it.

Question 17

If an operating system patch is not critical in nature,you might choose to delay installation until a regular patch cycle begins.

Question 18

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 19

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 20

System efficiency is affected primarily by two major components: user programs and operating system programs.

Question 21

A disadvantage of software monitoring tools is that they ____.

A) are difficult to install
B) become part of the system and can distort analysis results
C) are expensive to install
D) only monitor CPU speed and ignore the rest of the system

Question 22

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

A) Automated patch installation software
B) An inventory of all hardware and software on affected computers
C) External patch management hardware
D) A synchronized deployment on all computers

Question 23

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

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

Question 24

The first thing to do upon notification of a new software patch is to____.

A) identify the criticality of the patch
B) deploy the patch
C) test the patch
D) run automatic updating

Question 25

As memory management algorithms grow more complex,____.

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

Question 26

A danger of positive feedback loops is that ____.

A) as more jobs enter, there can be an increase in page faults
B) a single job will be allowed to run to completion and preempt waiting jobs
C) as more jobs enter, it increases the chance of deadlock
D) as more jobs enter, the amount of main memory allocated to each job decreases

Question 27

____ is/are usually measured under steady-state conditions and will reflect 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 28

The first step in testing a patch is ____.

A) review your contingency plans to uninstall the patch
B) check to see if the patched software performs its assigned tasks
C) verify whether or not the system restarts after the patch is installed
D) determine whether or not the patch disrupts normal system operations

Question 29

The overall responsibility of keeping an organization's software up to date ____.

A) depends upon the system manufacturer
B) is the job of the Chief Security Officer
C) is the job of the network administrator
D) depends upon the organization

Question 30

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 31

____ is a queue reordering technique that can help optimize I/O times.

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

Question 32

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

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

Question 33

The formula used to calculate a unit's availability is ____.

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

Question 34

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

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

Question 35

Deployment software falls into two groups: ____ software.

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

Question 36

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 37

In a system containing CPU 1 and Disk Drive A,the system is instructed to access Track 1,Track 9,Track 1,and then Track 9 of Drive A.The arm is initially located at Track 1.Drive A requires 35 ms for each move.Without reordering,Drive A requires ____ to complete the access.

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

Question 38

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 39

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 40

For batch jobs,the time from the submission of the job until its output is returned to the user is called ____ time.

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