Which of the following radio frequencies is used by the IEEE 802.11a wireless network?

1. A. 3.7 GHz
2. B. 7.0 GHz
3. C. 2.4 GHz
4. D. 5.0 GHz

Correct Answer: D

Which of the following works at the network layer and hides the local area network IP address and topology?

1. A. Network address translation (NAT)
2. B. Hub
3. C. MAC address
4. D. Network interface card (NIC)

Correct Answer: A

You work as a Network Administrator for McNeil Inc. You are installing an application. You want to view the log file whenever a new entry is added to the /var/log/messages log file. Which of the following commands will you use to accomplish this?

1. A. TAIL -show /var/log/messages
2. B. TAIL -f /var/log/messages
3. C. TAIL -50 /var/log/messages
4. D. TAIL -view /var/log/messages

Correct Answer: B

Which of the following statements about buffer overflow is true?

1. A. It manages security credentials and public keys for message encryptio
2. B. It is a collection of files used by Microsoft for software updates released between major service pack release
3. C. It is a condition in which an application receives more data than it is configured to accep
4. D. It is a false warning about a viru

Correct Answer: C

You work as a Network Administrator for Net Soft Inc. You are designing a data backup plan for your company's network. The backup policy of the company requires high security and easy recovery of data. Which of the following options will you choose to accomplish this?

1. A. Take a full backup daily with the previous night's tape taken offsit
2. B. Take a full backup daily and use six-tape rotatio
3. C. Take a full backup on Monday and an incremental backup on each of the following weekday
4. D. Keep Monday's backup offsit
5. E. Take a full backup on alternate days and keep rotating the tape
6. F. Take a full backup on Monday and a differential backup on each of the following weekday
7. G. Keep Monday's backup offsit
8. H. Take a full backup daily with one tape taken offsite weekl

Correct Answer: A