Operating Systems

1.

1 point

Ch 14. In a Unix system, ____ defines what the user’s privileges are on the network and is closely associated to the files of the owner.

permissions of a file

multics

userid

none of these

daemon process

2.

1 point

Ch 1. What networking system has each network member both a client and a server?

Peer-to-peer network

Client-server network

Local-area network

The cloud

Ring network topology

3.

1 point

Ch 11. What must happen to a file system before it can be accessed?

Mounted

Nothing needs to happen

Installed

Repartitioned

Attached

4.

1 point

Ch 14. If a process in Domain D(i) tries to do "anOperation" on object O(j), then what must be in the access matrix?

object(i) must be in the access matrix

none of these

domain(j) must be in the access matrix

the character Neo Keanu Reeves must be in the access matrix

"anOperation" must be in the access matrix

5.

1 point

Ch 12. What allocation strategy is best for databases (which read and write to and from files very often)?

contiguous

linked

indexed

hash table

6.

1 point

Ch 8. The memory address seen by the memory unit (loaded into the memory-address register) is call the ________

Hard address

Physical Address

Logical Address

None of these

Soft address

7.

1 point

Ch 8. The processes on disk that are waiting to be brought into memory for execution form the _________

None of these

Wait stack

Input queue

Next to process list

Ready processes

8.

1 point

Ch 11. The close() operation:

None of these

Increments the file's close count.

Closes the program window.

Increments the file's open count.

Sets the process state to terminate.

9.

1 point

Ch 3. What kinds of program listed below is an example of time-shared systems?

user programs

jobs

tasks

tasks and jobs

tasks and user programs

10.

1 point

Ch 11. LDAP stands for:

Lightweight Dynamic Address Pointer.

Legal Deposit Advisory Panel.

Lattner-Dean-Aaronson Protocol.

None of these.

Lightweight Directory Access Protocol.

11.

1 point

Ch 14. The ability to execute an operation on an object is called what?

An access right

static

none of these

protection scheme

domain switching

12.

1 point

Ch 2. Which of the following is NOT a Type of System Call:

Protection

Device Management

Program Execution

Process Control

All of these are System Calls

13.

1 point

Ch 6. Which one of these is NOT part of the scheduling criteria characteristics?

Waiting Time

Response Time

CPU Burst

Turnaround Time

Throughput

CPU Utilization

14.

1 point

Ch 11. Which one is a type of a file operations?

All of these

Reading a file

Writing a file

Deleting a file

Creating a file

15.

1 point

Ch 1. What is the main requirement for secondary storage?

Ability to hold large quantities of data temporarily

Inexpensive

Low access time

Ability to hold large quantities of data permanently

None of these

16.

1 point

Ch 12. Can free space have data in it? Why?

yes; If the operating system crashes before it can clear the data, the data would still remain, but the address would be marked as free space.

yes; if a file once occupied the address and was deleted, its data would still remain, but the address would be marked as free space.

no; the system will overwrite the free space with other data when it compacts its data to consolidate all of its free space in one area.

no; when a file is deleted, the system always removes all the data by resetting the addresses.

17.

1 point

Ch 14. What is a collection of access rights, each of which is an ordered pair ?

access matrix.

list.

space.

domain.

user.

18.

1 point

Ch 5. A memory transaction is:

A transaction between memory and it's purchaser.

A sequence of memory read-write operations that are atomic.

None of these

Something that implements transactional memory exclusively in software.

19.

1 point

Ch 11. Which one is a type is a word processor file extension?

exe

mp3

zip

docx

o

20.

1 point

Ch 11. A write pointer is:

A pointer to the beginning of a file.

A helpful tip for people with writers block

A pointer to the next free space on the hard drive

A pointer to the location in the file where the next write is to take place.

A location in memory where data is written.

21.

1 point

Ch 12. When would linear lists be better than hash tables when implementing a directory?

designing a directory that needs to be reliable

designing a directory that will take up the least space possible

designing a directory that will be changed a lot

designing a directory that is easily searchable

22.

1 point

Ch 2. When designing and Implementing an Operating Systems, which is NOT a User Goal:

OS should be Easy to Use

None of these are User Goals

OS should be Safe and Fast

OS should be flexible

OS should be Reliable

23.

1 point

Ch 8. Page offset combined with the base address to define the physical memory address sent to the _______.

memory unit

cpu

operating system

cpu register

24.

1 point

Ch 8. Another name for associative memory is?

virtual memory

translation look-aside buffer

free memory

physical memory

25.

1 point

Ch 5. What can protect against race conditions?

Non-preemptive kernels

none of these

Mutex lock

Atomically

26.

1 point

Ch 1. Which of the following refers to a system that has two or more processors working together?

Multiprogramming System

Single Processor System

None of these

Multiprocessor System

Firmware

27.

1 point

Ch 5. What three requirements must be satisfied by a solution to the critical section problem?

Entry section, Remainder section, Exit section

Mutex lock, Busy waiting, Spin lock

Mutual exclusion, Progress, Bounded waiting

none of these

28.

1 point

Ch 1. When a computer starts what initial prgram needs to run?

distributed lock manager

Proccess control block

Disk controller

Job pool

Bootstrap program

29.

1 point

Ch 3. Which UNIX commands are examples of a system call which can create a new process?

abort()

exit()

fork()

all of these

wait()

30.

1 point

Ch 15. Which of the following is considered a Program Threat to computers?

Port scanning to detect a system's vulnerabilities.

Worm, a process that duplicates itself and uses up system resources.

Trojan horse, which allows programs written by users to be executed by other users.

Denial of service attacks, which abuse fundamental functionality of TCP/IP.

31.

1 point

Ch 6. Which of the following is not a circumstance in which preemptive CPU-scheduling may take place?

When a process switches from ready state to the running state

When a process switches from the waiting state to the ready state

When a process terminates

When a process switches from the running state to the ready state

When a process switches from the running state to the waiting state

32.

1 point

Ch 8. Base register contains value of ________ physical address?

worst fit

biggest

none of these

best fit

smallest

33.

1 point

Ch 14. What is one of the significant advantages of a complier based enforcement?

It requires the user to use outside resources for the complier based enforcement to work.

It is complex to implement.

Protection requirements can be stated independently of the facilities provided by a particular operating system.

It needs to be programmed.

none of these

34.

1 point

Ch 15. Which of the following is NOT component(s) of an encryption algorithm?

A set of keys, a set of messages and a set of ciphertexts.

A decrypting function.

An advanced processor.

An encrypting function.

35.

1 point

Ch 2. CLI, and API stand for:

Command Line Interpreter and Application Process Interface

Command Line Interpreter and Application Process Interpreter

Command Line Interface and Allocation Process Interpreter

Command Line Interpreter and Application Program Interface

Command Line Interpreter and Allocation Program Interface

36.

1 point

Ch 5. What are some ways that Operating Systems like Windows, Linux and Solaris provide support for process synchronization?

Provide mechanisms such as semaphores, mutex locks, spin locks and condition variables to control access to shared data.

Directly share a logical address space (that is both code and data) or be allowed to share data only through files or messages

Provide a sequential order of operation

none of these

37.

1 point

Ch 10. How does SSTF algorithm work?

Start from one end moves to other end

Select first request that comes first

Select request with least seek time

Start from one end moves to other end circularly

38.

1 point

Ch 3. What is the order of the 5 states of a process executing?

running -> terminated -> new -> ready -> waiting

waiting -> new -> ready -> running -> terminated

terminated -> new -> ready -> running -> waiting

new -> ready -> running -> waiting -> terminated

ready -> waiting -> running -> terminated -> new

39.

1 point

Ch 14. What do the rows of the access matrix represent, and what do the columns represent?

processes, users.

domains, objects.

users, domains.

objects, processes.

40.

1 point

Ch 8. What best describes the Worst-Fit memory allocation strategy?

Pick a random whole to allocate, then check to make sure it fits

Allocate the first hole that is big enough

Allocate the smallest hole that is big enough

None of these

Allocate the largest hole available

41.

1 point

Ch 1. Which of the following is not part of computer hardware?

None of these - all of these are part of a computer’s hardware

I/O Devices

CPU

Memory

Word Processor

42.

1 point

Ch 1. What is the perpose of a cache?

To store long term memory on a disk

To temporarily store a small amount of memory that is fast to access.

To hide data on disk from other users.

To store a file access matrix

To boot the operating system.

43.

1 point

Ch 11. Consistency semantics specify:

What happens when multiple users access the same segment of memory simultaneously.

How consistent an API is.

None of these

What happens when multiple users access the same file simultaneously.

How data in memory is synchronized with data on secondary storage.

44.

1 point

Ch 14. In an access matrix, each row represents:

an access control list

none of these

a capability list

a process

an object

45.

1 point

Ch 15. Which of the following can protect computers from virus?

A complex password.

Public and private key.

None of above.

Safe computing and using particular software.

46.

1 point

Ch 14. How to implement an access matrix?

capability list for domains.

access list for objects.

global table.

none of these

all of these

47.

1 point

Ch 6. What is the order of priority for a multilevel queue scheduling algorithm?

System process, Interactive Process, Interactive editing processes, Batch Processes, Student Process

Interactive editing processes, Interactive Processes, System Process, Batch Process, Student Process

Interactive editing processes, Batch Process, Student Process, Interactive Process, System Process

Student Process, Batch Process, Interactive editing processes, Interactive processes, System Processes

48.

1 point

Ch 11. Which of the following is NOT a file attribute:

Type

Time

inode

Location

Name

49.

1 point

ch 14. In an access matrix, each column represents:

a process

a domain

an access-control list

none of these

a capability list

50.

1 point

Ch 11. Which one is a type of a file attributes?

Type

Identifer

Location

All of these

Name