Information Security

191. The purpose of digitally signing a Browser Helper Object (BHO) is:

  1. To prove its origin
  2. To prove that it is not malicious
  3. To prove that it can be trusted
  4. To prove that it was downloaded properly

Correct answer: (A)
To prove its origin

192. The purpose of digitally signing a message is to ensure:

  1. Integrity of the sender
  2. Confidentiality of the message
  3. Authenticity of the sender
  4. Confidentiality of the sender

Correct answer: (C)
Authenticity of the sender

193. The purpose of off-site media storage is:

  1. To protect media from damage in the event of a disaster
  2. To protect media from theft
  3. To provide additional storage not available on-site
  4. To meet regulatory requirements for media protection

Correct answer: (A)
To protect media from damage in the event of a disaster

194. The purpose of the containment step in a security incident response plan is:

  1. To prevent the spread of the incident
  2. To recover the affected system to its pre-incident state
  3. To isolate the system
  4. To collect evidence for possible disciplinary action or prosecution

Correct answer: (A)
To prevent the spread of the incident

195. The purpose of the CPU's Program Counter is:

  1. To keep track of which instruction in memory is currently being worked on
  2. To keep track of the number of instruction cycles the CPU has consumed on an individual program
  3. To keep track of the starting address of a program
  4. To track the version of the CPU's microcode

Correct answer: (A)
To keep track of which instruction in memory is currently being worked on

196. The purpose of the Diffie-Hellman key exchange protocol is:

  1. To decrypt a symmetric encryption key
  2. To encrypt a symmetric encryption key
  3. To permit two parties who have never communicated to establish public encryption keys
  4. To permit two parties who have never communicated to establish a secret encryption key

Correct answer: (D)
To permit two parties who have never communicated to establish a secret encryption key

197. The purpose of the NTP protocol is:

  1. Transfer the contents of a file
  2. Synchronization of computer clocks to a reference clock
  3. A signaling protocol used for Voice over IP
  4. Share file systems over a network

Correct answer: (B)
Synchronization of computer clocks to a reference clock

198. The reason preventive controls are preferred over detective controls is:

  1. Preventive controls are less costly
  2. Detective controls do not actually stop unwanted activity
  3. Detective controls require more resources
  4. Preventive controls are do not detect unwanted activity

Correct answer: (B)
Detective controls do not actually stop unwanted activity

199. The reason that two-factor authentication is preferable over ordinary authentication is:

  1. Two-factor authentication is more difficult to crack
  2. It relies upon something the user knows
  3. It relies upon something that the user has
  4. Two-factor authentication uses stronger encryption algorithms

Correct answer: (C)
It relies upon something that the user has

200. The risks of excessive humidity in a computing facility include all of the following EXCEPT:

  1. Static electricity
  2. Corrosion
  3. Condensation
  4. Short circuits

Correct answer: (A)
Static electricity

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