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tigry1 [53]
3 years ago
10

Suppose a computer can execute 1 billion instructions/sec and that a system call takes 1000 instructions, including the trap and

context switching. How many system calls can the computer execute per second and still have half the CPU capacity for running application code?
Computers and Technology
1 answer:
Genrish500 [490]3 years ago
3 0

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

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What refers to the protocolâ s ability to ensure that data hasnâ t been modified in any way?
Tamiku [17]

Answer:

Option (b) Integrity

Explanation:

  • Data Integrity refers to the data which is not modified over the process, system.
  • Data Integrity here refers to which is not corrupted over the system in any way.
  • Throughout the life cycle of the process, system the data is intact and can be trusted for the future use.So, option (b) Integrity is the correct option.
  • Option (a) Confidentiality means the data that is kept secret, private but that doesn't mean it is not modified. So, option (a) confidentiality is wrong option.
  • Option (c) Authentication means the user is authenticated to use the data. It means the user has access to the data or not.So, option (c) is wrong option.
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3 0
3 years ago
In 1964 in London, Ontario one could buy a chili-dog and a root beer for $1.25, today the same chili dog and root beer cost $5.0
Marta_Voda [28]

Answer:

3% inflation rise. No correct cpi option

Explanation:

Consumer Price Index(CPI) is calculated by the Bureau of Economic Analysis and Statistics of a country monthly and annually.

Consumer Price Index(CPI) is used for measuring the changes in the price level of consumer goods and services purchased by households.

Calculating the consumer price index; price in 1964= $1.25, today price= $5.0.

Therefore, consumer price index= Price in today- price in 1964÷ price in 1964,.

Consumer Price index(CPI)= $(5-1.25)/1.25 = 3.75/1.25 = 3 Percent price inflation rise.

For the first cpi; 112-80/80= 0.4 percent( not equal to the 3 Percent inflation rise).

For the second cpi: 141.6-60/60= 1.36 Percent inflation rise(not equal to the 3 Percent inflation rise).

For the third CPI: 126.4-75/75 =0.68 percent inflation rise[not equal to the 3 Percent inflation rise].

For the third CPI: 108.5-90/90=0.21 percent inflation rise(not equal to 3 Percent inflation rise)

Therefore, none of the options are right.

5 0
3 years ago
the manager of a xyz organisation is preparing the organizational chart which feature of MS Excel /he will use to do so? also wr
chubhunter [2.5K]

Answer:

Smart Art

Explanation:

The smart art feature in Microsoft excel allows for the creation of organizational chart on Microsoft excel. It readily allows for an hierarchical arrangement of an organization's personnel including the various departments on the system. The smartart allows the implementation of a graphical output which allows the display of an organization's personnel in order of hierarchy. To get started with smart art on excel, Clicking on the insert tab, the same are appears under illustrations. For an organizational chart, the Hierarchy smart art graphic type is selected and filled accordingly.

3 0
3 years ago
A binary search function is searching for a value that is stored in the middle element of an array. How many times will the func
Ganezh [65]

Answer: 1 time.

Explanation:

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  • Binary search compares the target value to the middle element of the array.
  • It ignores half of the elements just after one comparison.
  • it compares x with the middle element.

So, the function read an element <u>one time</u> in the array before finding the value.

3 0
3 years ago
Jeffery wants to identify the subject terms being used in APA PsychInfo for articles related to behavior modifications. What is
schepotkina [342]

Group of answer choices.

a. He can look for common related subject terms in a dictionary, thesaurus or encyclopedia.

b. He can look for relevant articles in the results list from a database search and scan the subject terms.

c. He can use Go-ogle Scholar to retrieve relevant articles and find common related subject terms.

Answer:

b. He can look for relevant articles in the results list from a database search and scan the subject terms.

Explanation:

A Search engine is an internet resource or service that searches for keywords or categories specified by the end user and then displays (shows) a list of website which matches or have informations similar to the query. Some examples of popular search engines are Goo-gle, Bing, Yahoo, etc.

The most efficient and effective search strategy to identify subject terms for a database search is to look for relevant articles in the results list from a database search and scan the subject terms.

In order to improve the speed of retrieval for a search engine, high frequency words such as if, or, and, at, to, etc., which are generally referred to as stop words are filtered out.

However, AND should be used to combine keywords and phrases when using a "subject search" option to search a database for relevant articles.

5 0
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