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WorksheetsIBA Chapter 8B
Total questions: 16
Worksheet time: 8mins
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.
Which encryption method provides data integrity because, even though encrypted data is not decrypted, you can verify whether the data was altered after encryption?
Symmetric-key encryption
Hash encryption
RSA encryption
Asymmetric-key encryption
Which statement correctly compares computer viruses and worms?
A virus requires user action to replicate, but a worm can replicate by itself.
A worm requires user action to replicate, but a virus can replicate by itself.
A virus can deposit an illicit server, but a worm cannot.
A worm can deposit an illicit server, but a virus cannot.
Which term is used to describe a program that appears to be harmless but actually produces malicious or harmful results?
Firewall
Virus
Worm
Trojan
What distinguishes a worm from a virus?
A worm and a virus are synonymous terms for a malicious program designed to damage computer systems.
A worm is capable of replicating itself automatically while affecting data.
A worm does not replicate itself; it damages or destroys data.
A worm does not replicate itself; it assumes control of system operations.
Lisa has received a file attachment from a co-worker, James. She has no reason to expect a file from this person. The most effective security strategy for Lisa to follow would be:
to make back-up copies of important files so that she can recover them in case of an incident.
to call, text or IM James before opening the attachment, to verify that he intended to send it.
to open the file attachment and use anti-virus software to scan it.
to use anti-virus software to scan the system's hard disk before opening the attachment.
What do encryption applications do to render text unreadable?
Compress the text so that only abbreviated portions of words remain
Scramble text using benign viruses
Scramble text using mathematical algorithms
Remove all formatting and punctuation from the text
