What is a utility program?
What will be an ideal response?
A utility (program), sometimes referred to as a command, performs a task
that is frequently related to the operating system. A utility is simpler than
an application program, although no clear line separates the two. Linux dis-
tributions include many utilities. You can also download many utilities
from the Internet.
Examples of utilities are cp (copies a file), ls (lists information about files),
ssh (securely connects to a remote computer), and df (lists information
about free space on system devices such as hard disks).
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Characters that appear on the screen but are not printed on paper are called ________ marks or nonprinting characters
Fill in the blank(s) with correct word
Which layer is responsible for establishing communication setup between the source and destination computers?
A. Application B. Session C. Transport D. Presentation