1. On a VPN, traffic is decrypted at every endpoint .

Explanation: A virtual private network (VPN) is a secure communications protocol that encrypts traffic between two endpoints. At each endpoint, the traffic is decrypted. Traffic can consist of one-to-one, one-to-many and many-to-many conversations. A typical application for a company would be to place a VPN at a satellite location. All traffic between the location, other satellite locations and corporate headquarters is automatically encrypted.

2. Microsoft supports the PPTP and IPSec standards for use in extranets.

3. Tunnelling is used by an extranet to connect multiple intranets via the Internet.

4. PGP/MIME is being seen as an alternative to S/MIME.

Explanation: S/MIME (Secure Multi-Purpose Internet Mail Extensions) is a secure method of sending e-mail that uses the Rivest-Shamir-Adleman encryption system. S/MIME is included in the latest versions of the Web browsers from Microsoft and Netscape and has also been endorsed by other vendors that make messaging products. RSA has proposed S/MIME as a standard to the Internet Engineering Task Force (IETF). An alternative to S/MIME is PGP/MIME, which has also been proposed as a standard.

5. PGP provides cryptographic routines for e-mail , file transfer and file storage .

Explanation: PGP (Pretty Good Privacy) is a software package originally developed by Phil Zimmerman that provides cryptographic routines for e-mail, file transfer, and file storage applications. Zimmerman used existing cryptographic algorithms and protocols and developed a system that can run on multiple platforms. It provides message encryption, digital signatures, data compression, and e-mail compatibility.

6. TACACS+ is an update to TACACS and is backwards compatible. True or false? False.