Which of the following are functions that are performed by a program rather than by a user?

The operating system provides file system access and file support services.

Internet Control Message Protocol creates messages for failure at which of the following layers?

Controlling the channel bandwidth to prevent interface from other signals is referred to as:

A full-duplex channel may carry messages in both directions, but only one direction at a time.

Random access files are the same as relative access files.

When analog data is converted into digital form, however, a small amount of information is lost during the transformation.

To solve the related problems of channel availability and maximum utilization, there must be a way to break long messages into smaller units. These units are called what?

The disease beriberi is caused by a deficiency of thiamine in the diet. Why is this disease often associated with metabolic acidosis and neurological disorders?

Directions: Rewrite each sentence. Change the subject to a gerund form. Example: It is expensive to buy new clothes. Buying new clothes is expensive.   It is fun to make cookies. It can be exciting to climb a mountain. It is important to check your messages as soon as you get home. It can be discouraging to try to save money. It is easy to learn a second language when you’re a child.