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trapecia [35]
3 years ago
11

Which two statements are true about an OS?

Computers and Technology
1 answer:
Marat540 [252]3 years ago
6 0
The correct answers are A and C
Please give me brainless
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Suppose a computer can execute 1 billion instructions/sec and that a system call takes 1000 instructions, including the trap and
Genrish500 [490]

Answer:

System calls = 500000

Explanation:

Instructions that a computer can execute = 1 billion instructions/sec

Instructions that a system call takes including the trap and context switching = 1000 instructions

When half of the CPU time is on application, n system calls can be executed in 1 second.

Therefore we'll get an equation as following.

1000 * n = 0.5 * 1000000000

n = 0.5 * 1000000000 / 1000

n = 500000

System calls = 500000

3 0
3 years ago
) Suppose algorithm A takes 10 seconds to handle a data set of 1000 records. Suppose the algorithm A is of complexity O(n2). Ans
Mice21 [21]

Answer:

i) The time taken for 1500 records = 15 seconds.

ii) The time taken for 1500 records = 50 seconds.

Explanation:

A is an O(n) algorithm.

An algorithm with O(n) efficiency is described as a linearly increasing algorithm, this mean that the rate at which the input increases is linear to the time needed to compute that algorithm with n inputs.

From the question, it is given that for 1000 records, the time required is: 10 seconds.

Algorithm time taken is O(n)

Hence,

1) For 1,500 records

=> 10/1000 = x/1500

=> 10x1500/1000 = x

x = 15 seconds

Thus, the time taken for 1500 records = 15 seconds.

2) For 5,000 records

=> 10/1000 = x/5000

=> 10x5000/1000 = x

x = 50 seconds

Thus, the time taken for 1500 records = 50 seconds.

8 0
3 years ago
Look at the four schematic symbols shown in the figure above. Each of the symbols is labeled with a number. Which of the followi
ladessa [460]
The correct answer for the question that is being presented above is this one: "D. Symbol 1 represents a transistor, symbol 2 represents a diode, symbol 3 represents a resistor, and symbol 4 represents a lightbulb." <span>Each of the symbols is labeled with a number. </span>
6 0
3 years ago
A _______________ is a particular type of network that uses circuits that run over the Internet but that appears to the user to
ArbitrLikvidat [17]

Answer:

A virtual privte network is a particular type of network that uses circuits that run over the Internet but that appears to the user to be a private network.

5 0
2 years ago
Starting in 2024 under a new law, all new smartphones sold in the eu must have….
Inga [223]

Answer:

USB type C cables.

Explanation:

3 0
2 years ago
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