IBA Chapter 8B

Which of the following is the most common method for spreading viruses?

• Swapping disks or drives

• Opening attachments

• Installing programs

• Downloading files

You receive an unexpected e-mail with an attachment from a co-worker. You call the co-worker to ask if she sent you an e-mail message with an attachment. She recalls that she sent several e-mails with attachments earlier that day. Which of the following is your co-worker's best response to your question?

• She should ask you to open the attachment and describe its contents.

• She should ask you to forward the e-mail to her so she can open the attachment and check it.

• She should ask you to forward the e-mail to your company's management.

• She should ask you to read her the e-mail message including the full name of the attachment and its extension.

Which statement best describes symmetric-key encryption?

• An encryption method in which numbers generated by an algorithm from a text string are used to verify the integrity of transmitted messages

• An encryption method in which two separate keys -- a private key and a public key -- are used to encrypt and decrypt a message

• An encryption method in which the same key is used to encrypt and decrypt a message

• essage

  D

  An encryption method in which a key is required to encrypt data for storage and to verify its integrity

Which term is used to describe the process that converts data into an unreadable form of text?

• Certification

• Encryption

• Authentication

• Decryption

The level of secrecy offered by encryption is dependent on:

• whether or not the data you are encrypting is licensed.

• the type of encryption used and the size of the key.

• the transmission speed used to encrypt or decrypt data.

• whether or not the data you are encrypting is copyrighted.

Which statement best describes hash encryption?

• An encryption method in which a key is required to encrypt data for storage and verify its integrity

• An encryption method in which two separate keys -- a private key and a public key -- are used to encrypt and decrypt a message

• An encryption method in which numbers generated by an algorithm from a text string are used to verify the integrity of transmitted messages

• An encryption method in which the same key is used to encrypt and decrypt a message

Which term is used to describe an application that installs hidden services on a system that enables the attacker to monitor and control the operation of the system?

• Trojan

• Worm

• Virus

• Illicit server

Hypertext Transfer Protocol (HTTP) can be run over Secure Sockets Layer (SSL) to create the HTTPS protocol. How does HTTPS make HTTP transmission more secure?

• By eliminating the need for digital certificates

• By eliminating the need for user names and passwords

• By encrypting and decrypting information transmitted to and from Web servers

• By attaching digital certificates to information transmitted to and from Web servers

Your IT department enforces the use of 128-bit encryption on all company transmissions. Your department also protects the company encryption keys to ensure secure transmissions. Which choice lists an important reason for encrypting the company's network transmissions?

• Preventing data from being intercepted by malicious outsiders

• Avoiding licenses that allow you to use a copyrighted software program

• Providing employees privacy to use company e-mail for personal purposes

• Legally protecting your company's original product content

You suspect that an attacker has gained control of your computer system. What action should you take next?

• Enable strong encryption on all files on the hard disk.

• Unplug the computer network cable and/or disable the computer's wireless NIC.

• Run anti-virus software on all disks associated with this system.

• Shut down the computer.