1D0-571

1D0-571 practice questions, page 2 of 3, with answer review and explanations.

Question 6

You have discovered that the ls, su and ps commands no longer function as expected. They do not return information in a manner similar to any other Linux system. Also, the implementation of Tripwire you have installed on this server is returning new hash values. Which of the following has most likely occurred?

  1. A trojan has attacked the system.
  2. A SQL injection attack has occurred.
  3. A spyware application has been installed.
  4. A root kit has been installed on the system.

Question 7

Which of the following organizations provides regular updates concerning security breaches and issues?

  1. IETF
  2. ISO
  3. ICANN
  4. CERT

Question 8

You have been asked to encrypt a large file using a secure encryption algorithm so you can send it via e-mail to your supervisor. Encryption speed is important. The key will not be transmitted across a network. Which form of encryption should you use?

  1. Asymmetric
  2. PGP
  3. Hash
  4. Symmetric

Question 9

Which of the following is the most likely first step to enable a server to recover from a denial-of-service attack in which all hard disk data is lost?

  1. Enable virtualization
  2. Contact the backup service
  3. Contact a disk recovery service
  4. Rebuild your RAID 0 array

Question 10

You purchased a network scanner six months ago. In spite of regularly conducting scans using this software, you have noticed that attackers have been able to compromise your servers over the last month. Which of the following is the most likely explanation for this problem?

  1. The network scanner needs to be replaced.
  2. The network scanner is no substitute for scans conducted by an individual.
  3. The network scanner has a trojan.
  4. The network scanner needs an update.