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WGU OS for Programmers > PA Incorrect > Flashcards

PA Incorrect Flashcards

1
Q

Which generation of computers were large-scale integrated circuits used to develop personal computers for desktop and laptop operating systems?

A

4th gen

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2
Q

A company needs to determine when a computer experiences a microprocessor interrupt that is the result of a division by zero.

Which operating system (OS) service should be used?

A

Error detection

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3
Q

What does each thread of a multi-threaded process use to access shared code?

A

Program counter

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4
Q

A process is not attempting to enter the critical section (CS), but it is preventing other processes from entering the CS.

Which situation was caused by this process?

A

Lockout

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5
Q

Which step is completed first during an input/output (I/O) call?

A

The process is placed on the wait queue

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6
Q

What should be used to improve memory utilization when loading external references?

A

Dynamic Linking

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7
Q

Why are approximations used in place of the least-recently-used (LRU) algorithm?

A

Higher Efficiency

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8
Q

What describes the 50% rule in external memory fragmentation?

A

1/3rd of memory may be lost

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9
Q

What is used to determine the number of processes that can run concurrently?

A

Load Control

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10
Q

Which disk type provides direct access to a secondary storage device as an array of blocks with no file system?

A

Raw

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11
Q

What is the determining factor for sustained throughput in magnetic storage?

A

Data transfer rate

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12
Q

What can be used to access Dropbox?

A

API

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13
Q

What is partitioning?

A

Creating groups of blocks on secondary storage

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14
Q

What causes a page fault?

A

Present bit is set to 0

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15
Q

What are the two measures of positioning time?

Choose 2 answers.

A

Moving disk arm to desired cylinder, rotating disk to desired sector

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16
Q

A company needs to ensure consistent performance by decreasing the density of bits from inner tracks to outer tracks.

Which hard disk method should be used?

A

Constant angular velocity

17
Q

Which file attribute should be used to identify who can access a file?

A

protection

18
Q

When should digests be used?

A

Establishing an undeniable link between the document and its sender

19
Q

Which cyberattack technique is mitigated by using the CTRL+ALT+DEL key sequence in the Windows operating systems?

A

Login spoofing

20
Q

What is the physical memory size for an address size of 8 bits?

A

256

21
Q

Which latency waits for the requested data to pass under the drive head of a magnetic hard disk?

A

Rotational Delay

22
Q

What is a key that is used by a recipient to decrypt a message encrypted with asymmetric encryption?

A

Private

23
Q

Which technique involves requesting an unsuspecting user to disclose their credit card information on a fake website that looks legitimate?

A

Phishing

WGU OS for Programmers (14 decks)

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