COMPUTERS AND TECHNOLOGY HIGH SCHOOL

Which of the following is not a type of computer networkOptions
Local Area Network
Metropolitan Area Network
City Area network
Wide Area Network?

Answers

Answer 1
Answer: The answer is City Area Network.
Local Area Network, Metropolitan Network, and Wide Area Network are only some of the types of network. LAN is a network of computers in a single site usually in a single office building. While MAN, is a network of computer across an entire city or a small region. WAN is a very large area of network such as the Internet.

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Which of the following choices is not an operating system?A. DOS
B. Windows Vista
C. UNIX
D. Windows 97

Answers

There is no such Windows 97 OS released from Microsoft Windows. After the first release of Windows 95 on August 24, 1995 it was followed by another release with some major enhancements in 1997 under the same name. The next OS released by Microsoft office was the Windows 98 in 1998.

Answer:

windows 97

Explanation:

you can instantiate a subclass of an abstract class, but only if the subclass gives the definitions of all the abstract methods of the superclass. group of answer choices true false

Answers

The statement is true. In object-oriented programming, an abstract class is a class that cannot be instantiated on its own and can only serve as a base for other classes. Subclasses of an abstract class must provide definitions (implementations) for all the abstract methods declared in the superclass. Failure to do so will result in a compilation error. Therefore, to instantiate a subclass of an abstract class, all the abstract methods must be implemented in the subclass.  

Which of the following lists the stages of the four-stroke engine cycle in the correct order of operation?a. Intake, compression, power, exhaust
b. Exhaust, power, intake, compression
c. Intake, power, compression, exhaust
d. Power, intake, exhaust, compression

Answers

The answer is (a) Intake, Compression, Power, Exhaust.
The fourth-stroke engine cycle or the commonly known as the four cycle is a type of engine that completes four separate strokes while turning a crankshaft. First is the Intake where the piston begins at TDC. Second is the compression where it begins at BDC and the piston compresses the air-fuel mixture for ignition. Third is combustion where the second revolution of the cycle starts. Last is the exhaust where the piston once again returns to TDC from BDC.

Answer:

A

Explanation:

The fourth-stroke engine cycle is a kind of motor that performs four distinct thrusts while rotating a rotor. The first is the inlet, where the piston starts at the top did centre. The second stage is compression, which begins at bottom dead centre and involves the engine compressing the mixture with air in preparation for ignition. The third stage is ignition, which initiates the cycle's second revolution. Finally, the pistons return to The top dead center from Bottom did center during the exhaust.

Composition of Reflections a) Urgent assistance needed b) Please help immediately c) Immediate help required d) Urgent request for help

Answers

Answer: 1. Urgent assistance needed 2. Immediate help required 3. Urgent request for help 4. Please help immediately  The option "Urgent assistance needed" is the most direct and explicit in conveying the urgency of the situation, making it the most suitable for urgent requests.  The option "Immediate help required" also conveys a strong sense of urgency, although it is slightly less direct than the first option.  The option "Urgent request for help" clearly indicates the need for urgent assistance, but it may be perceived as slightly less urgent compared to the first two options.  The option "Please help immediately" is still urgent but may be considered slightly less urgent or forceful than the other options, as it includes a polite request along with the sense of urgency.  Ultimately, the choice of which composition to use depends on the specific context and the desired tone of the request for help.

With "read" function, which one of the following statements is NOT correct? a.If the read is successful, the number of bytes read is returned. b.If the end of file is encountered, 0 is returned. c.The number of bytes actually read is always same as the amount requested for a successful read.d.The read operation starts at the file's current offset.e.Before a successful return, the offset is incremented by the number of bytes actually read

Answers

Answer:

a. If the read is successful, the number of bytes read is returned.

b. If the end of file is encountered, 0 is returned.

Explanation:

A read function is one of the functions used in computer programming. A read function is used to read an information or data that was written before into a file.

If any portion of a regular file before to the end of file has not been written and the end of file is encountered the read function will return the bytes with value 0.

If read function has read some data successfully, it returns the number of bytes it read.

A __________ is a repository of data gathered from operational data and other sources that is designed to serve a particular community of knowledge workers .a. Data-Mining
c. Data Mart
b. Metadata
d. Data warehouse

Answers

Data Mart is a smaller amount of data that is collected from a data warehouse.
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