When a host on a remote network performs a DNS lookup of www.google.com, which of the following is likely to provide an Authoritative reply?

1. A. The local DNS server
2. B. The top-level DNS server for .com
3. C. The DNS server for google.com
4. D. The root DNS server

Correct Answer: A

What is the main reason that DES is faster than RSA?

1. A. DES is less secur
2. B. DES is implemented in hardware and RSA is implemented in softwar
3. C. Asymmetric cryptography is generally much faster than symmetri
4. D. Symmetric cryptography is generally much faster than asymmetri

Correct Answer: D

Which of the following should be implemented to protect an organization from spam?

1. A. Auditing
2. B. System hardening
3. C. E-mail filtering
4. D. Packet filtering

Correct Answer: C

The previous system administrator at your company used to rely heavily on email lists, such as vendor lists and Bug Traq to get information about updates and patches. While a useful means of acquiring data, this requires time and effort to read through. In an effort to speed things up, you decide to switch to completely automated updates and patching. You set up your systems to automatically patch your production servers using a cron job and a scripted apt-get upgrade command. Of the following reasons, which explains why you may want to avoid this plan?

1. A. The apt-get upgrade command doesn't work with the cron command because of incompatibility
2. B. Relying on vendor and 3rd party email lists enables updates via email, for even faster patching
3. C. Automated patching of production servers without prior testing may result in unexpected behavior or failures
4. D. The command apt-get upgrade is incorrect, you need to run the apt-get update command

Correct Answer: D

What is the name of the Windows XP/2003 tool that you can use to schedule commands to be executed on remote systems during off-peak hours?

1. A. SCHTASKS.EXE
2. B. SCHEDULETSKS.EXE
3. C. SCHEDULR.EXE
4. D. SCHRUN.EXE

Correct Answer: A