Pm3110 Lesson 4

Review Test Submission: Lesson 4 Self Test Content
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Course
Intro/PC Operating Systems
Test
Lesson 4 Self Test
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Submitted

Status
Completed
Attempt Score
100 out of 100 points
Time Elapsed
17 minutes.
Instructions

Self Test

Question 1
10 out of 10 points

A ____, used in RAID Level 2, is a coding scheme that adds extra, redundant bits to the data and is therefore able to correct single-bit errors and detect double-bit errors.

Selected Answer:
b.
Hamming code
Answers:
a.
Synch code

b.
Hamming code

c.
Redundancy code

d.
Parity code

Question 2
10 out of 10 points

In indexed storage, when a file is created, the pointers in the index block are all set to ____.
Selected Answer:
d.
null
Answers:
a. zero b. the end of the volume

c. the beginning of the volume

d. null Question 3
10 out of 10 points

The number of characters that can be recorded per inch on a magnetic tape is determined by the ____ of the tape.

Selected Answer:
b.
density
Answers:
a. width b. density c. length d. parity Question 4
10 out of 10 points

____ uses the same underlying philosophy as shortest job next, where the shortest jobs are processed first and longer jobs are made to wait.

Selected Answer:
d.
SSTF
Answers:
a.
LOOK

b.
FCFS

c.
SCAN

d.
SSTF

Question 5
10 out of 10 points

The primary disadvantage of contiguous storage is that ____.

Selected Answer:
c.
a file can’t be expanded unless there is empty space available immediately following it
Answers:
a. the file system cannot support direct access

b. the file system is difficult to create, implement, and manage

c. a file can’t be expanded unless there is empty space available immediately following it

d. a file can be spread in small pieces throughout the storage area

Question 6
10 out of 10 points

Of the three components of access time in a movable-head DASD, ____ is the slowest.

Selected Answer:
b.
seek time
Answers:
a. delay time

b. seek time

c. transfer time

d. search time

Question 7
10 out of 10
points

A file’s ____ filename includes all path information for that file.

Selected Answer:
c.
absolute
Answers:
a. relative b. long-form c. absolute d. extended Question 8
10 out of 10 points

____ are special files with listings of filenames and their attributes.

Selected Answer:
b.
Directories
Answers:
a.
Databases

b.
Directories

c.
Data files

d.
Programs

Question 9
10 out of 10 points

The computer system ____ a file by activating the appropriate secondary storage device and loading the file into memory while updating its records of who is using that file.

Selected Answer:
d.
allocates
Answers:
a. formats b. creates c. configures d. allocates Question 10
10 out of 10 points

The USB controller assigns bandwidth to each device depending on its priority. The ____ priority is assigned to real-time exchanges where no interruption in the data flow is allowed, such as video or sound data.

Selected Answer:
b.
highest
Answers:
a. lowest b. highest c. medium d.
standard