You work as a Network Administrator for NetTech Inc. You want to have secure communication on
the company’s intranet. You decide to use public key and private key pairs. What will you implement
to accomplish this?

A.
Microsoft Internet Information Server (IIS)

B.
VPN

C.
FTP server

D.
Certificate server

Explanation:
You will implement certificate server to use public key and private key pairs for secure
communication on the intranet. Certificate server is a
standards-based, highly customizable server program for managing the creation, issuance, and
renewal of digital certificates. It uses public
key cryptography that is a technology widely used for secure communication on a network such as
intranet or Internet. Public key
cryptography uses two types of keys, a public key and a private key. The public key is available to
everyone, while the private or secret key is
available only to the recipient of the message. For example, when a user sends a message or data to
another user, the sender uses a public
key to encrypt the data. The receiver uses his private key to decrypt the data. Public key
cryptography is the most secure cryptographic
implementation.
Answer options B is incorrect. VPN stands for virtual private network. It allows users to use the
Internet as a secure pipeline to their
corporate local area networks (LANs). Remote users can dial-in to any local Internet Service Provider
(ISP) and initiate a VPN session to
connect to their corporate LAN over the Internet. Companies using VPNs significantly reduce longdistance dial-up charges. VPNs also provide
remote employees with an inexpensive way of remaining connected to their company’s LAN for
extended periods.
Answer option A is incorrect. Microsoft Internet Information Server (IIS) is a Web and application
server for the Internet and private intranets.
IIS receives requests from users on the network using the World Wide Web (WWW) service and
transmits information using the Hypertext
Transport Protocol (HTTP). IIS uses Microsoft Transaction Server (MTS) to provide security,
performance, and scalability with server side
packages.