RRB (Computer Knowledge) Flashcards

Which MS Excel function counts the number of cells in a range that meet a specified condition?

Answer: COUNTIF()

COUNTIF() counts the number of cells within a range that satisfy a given criterion, such as counting all values greater than 100.

What is a firewall primarily used for in computer networks?

Answer: To monitor and control incoming and outgoing network traffic based on security rules

A firewall is a network security device or software that monitors and filters traffic based on predefined security rules to protect against unauthorized access.

Which type of computer memory loses its contents when the power is switched off?

Answer: RAM

RAM (Random Access Memory) is volatile memory, meaning all stored data is lost when the computer is powered off.

In the context of the internet, what is a 'cookie'?

Answer: A small data file stored on a user's browser by a website

A cookie is a small text file saved on a user's browser by a website to remember preferences, login sessions, or browsing activity.

Which shortcut key is used to open the 'Find and Replace' dialog box in MS Word?

Answer: Ctrl + H

Pressing Ctrl + H in MS Word opens the Find and Replace dialog box, allowing you to search for text and replace it with different text.

What does 'HTTP 404' error code indicate when browsing a website?

Answer: The requested page could not be found on the server

An HTTP 404 error means the server could not find the requested resource, typically because the page has been moved or deleted.

Which of the following best describes an operating system?

Answer: Software that manages hardware and software resources and provides services for programs

An operating system (OS) is system software that manages computer hardware and software resources and acts as an intermediary between users and the hardware.