Explanation

A scanner is a device that captures images from:

• photographic prints
• posters
• magazine pages 
• similar sources for computer editing and display. 
  

Explanation

In the statement scanf("%d", &kilometer);, kilometer is considered a variable because:

• Declaration:

Before this statement, kilometer must have been declared as a variable

• Address of Operator:

The & operator in &kilometer is the address-of operator.

It provides the memory address of the variable kilometer to the scanf function.

• Variable Usage:

Variables are used to store data that can be modified during program execution.

Explanation

A nested loop has one loop inside of another.

These are typically used for working with two dimensions such as printing stars in rows and columns as shown below.

When a loop is nested inside another loop, the inner loop runs many times inside the outer loop.

Explanation

In MS Access, the default data type for a new field in a table is typically set to "Short Text" (previously referred to as "Text" in older versions).

This data type is used to store alphanumeric data up to 255 characters in length.

Explanation

The MAR is a special type of register that contains the memory address of the data and instruction.

The main task of the MAR is to access instruction and data from memory in the execution phase.

Explanation

A typical URL could have the form http://www.example.com/index.html 

which indicates a protocol ( HTTP )

a hostname ( www.example.com )

a file name ( index.

Explanation

In closed-ended pipes, the closed end acts as a node for certain harmonics,

Resulting in a richer harmonic content compared to open-ended pipes.

Short pipes also tend to have richer harmonics compared to long pipes.

Explanation

Bandwidth describes the maximum data transfer rate of a network or Internet connection.

It is the amount of data that can be passed along a communications line at any given period.

Explanation

Aluminium is capable of superconductivity, with a superconducting critical temperature of 1.2 kelvin

And a critical magnetic field of about 100 gauss (10 milliteslas)

It is paramagnetic and thus essentially unaffected by static magnetic fields

Explanation

CSMA/CD (Carrier Sense Multiple Access/ Collision Detection) is a media access control method

That was widely used in Early Ethernet technology/LANs

It uses carrier-sensing to defer transmissions until no other stations are transmitting.