Which of the following statements about computer networks are TRUE?

A) An intranet is a public network.

B) The Internet is a group of interconnected networks.

C) An is an internal network that can be accessed externally by authorized users.

Choose the correct answer from the options given below:

The correct answer is B and C only.

Let us analyze each statement step-by-step to understand why this is correct:

Statement A: "An intranet is a public network." (FALSE)
An intranet is a private, restricted network used exclusively within an organization (such as a corporation, school, or government agency). It is designed to allow secure communication, collaboration, and resource sharing among employees or members of that specific organization. Because access is secured and restricted to internal users, it is a private network, not a public one.

Statement B: "The Internet is a group of interconnected networks." (TRUE)
The term "Internet" stands for "interconnected network". It is a global system of millions of public, private, academic, business, and government networks that are linked together using standard protocol suites (like TCP/IP) to share data and communication globally. Thus, it is indeed a group of interconnected networks.

Statement C: "An is an internal network that can be accessed externally by authorized users." (TRUE)
Although there is a typographical omission in the statement (it is missing the word "extranet"), the definition provided describes an extranet. An extranet is a controlled private network that allows access to partners, vendors, suppliers, or customers, or allows employees to access internal resources from outside the organization's physical location. It acts as an extension of an organization's intranet, granting restricted access to authorized external users while keeping the network secure from the general public. Therefore, the statement is true in the context of computer networking terminology.

Since Statement A is false, and Statements B and C are true, the correct combination is B and C only.