How can a user access a Web site when his DNS server is down?

A.
By using Web server’s MAC address.

B.
By using Web server’s IP address.

C.
By using IPSec.

D.
By using SSL.

Explanation:
DNS resolves host names to IP addresses. Thus, by using the IP address of the remote host, DNS
will not be required.

Incorrect Answers:
A: DNS resolves host names to IP addresses, not MAC addresses. Thus, by using the IP address
of the remote host, DNS will not be required.
C: IPSec is used to secure data transmissions over the Internet. It does not provide an alternative
method of accessing a Web server.
D: SSL is used to secure data transmissions between a browser and a Web server. It does not
provide an alternative method of accessing a Web server.References:David Groth and Toby
Skandier, Network+ Study Guide (4th Edition), Sybex, Alameda CA, 2005, pp. 117, 136-144, 184.