Interested to Buy Any Domain ? << Click Here >> for more details...
Which of the following is the MOST effective type of antivirus software to detect an infected application?
A. Scanners
B. Active monitors
C. Integrity checkers
D. Vaccines
- 1 Answers
- 6362 Views
- I also Faced
- E-Mail Answers
The correct answer is C
A. Scanners look for sequences of bits called signatures that are typical of virus programs. They examine memory, disk boot sectors, executable files and command files for bit patterns that match a known virus. Therefore, scanners need to be updated periodically to remain effective.
B. Active monitors interpret disk operating system (DOS) and read-only memory (ROM) basic input-output system (BIOS) calls, looking for virus-like actions. Active monitors can be misleading, because they cannot distinguish between a user request and a program or virus request. As a result, users are asked to confirm actions such as formatting a disk or deleting a file or set of files.
C. Integrity checkers compute a binary number on a known virus-free program that is then stored in a database file. This number is called a cyclical redundancy check (CRC). When that program is called to execute, the checker computes the CRC on the program about to be executed and compares it to the number in the database. A match means no infection; a mismatch means that a change in the program has occurred. A change in the program could mean a virus.
D. Vaccines are known to be good antivirus software. However, they need to be updated periodically to remain effective.
| Is This Answer Correct ? | 1 Yes | 0 No |
One of the purposes of library control software is to allow: A. programmers access to production source and object libraries. B. batch program updating. C. operators to update the control library with the production version before testing is completed. D. read-only access to source code.
When a PC that has been used for the storage of confidential data is sold on the open market the: A. hard disk should be demagnetized. B. hard disk should be mid-level formatted.s C. data on the hard disk should be deleted. D. data on the hard disk should be defragmented.
A TCP/IP-based environment is exposed to the Internet. Which of the following BEST ensures that complete encryption and authentication protocols exist for protecting information while transmitted? A. Work is completed in tunnel mode with IP security using the nested services of authentication header (AH) and encapsulating security payload (ESP). B. A digital signature with RSA has been implemented. C. Digital certificates with RSA are being used. D. Work is being completed in.TCP services.
The PRIMARY reason for using digital signatures is to ensure data: A. confidentiality. B. integrity. C. availability. D. timeliness.
The MOST significant level of effort for business continuity planning (BCP) generally is required during the: A. testing stage. B. evaluation stage. C. maintenance stage. D. early stages of planning.
Use of asymmetric encryption in an Internet e-commerce site, where there is one private key for the hosting server and the public key is widely distributed to the customers, is MOST likely to provide comfort to the: A. customer over the authenticity of the hosting organization. B. hosting organization over the authenticity of the customer. C. customer over the confidentiality of messages from the hosting organization. D. hosting organization over the confidentiality of messages passed to the customer.
An IS auditor should be able to identify and evaluate various types of risks and their potential effects. Which of the following risks is associated with authorized program exits (trap doors)? A. Inherent B. Detection C. Audit D. Error
Which of the following is a role of an IS steering committee? A. Initiate computer applications. B. Ensure efficient use of data processing resources. C. Prepare and monitor system implementation plans. D. Review the performance of the systems department.
A sequence of bits appended to a digital document that is used to secure an e-mail sent through the Internet is called a: A. digest signature. B. electronic signature. C. digital signature. D. hash signature.
An organization is considering connecting a critical PC-based system to the Internet. Which of the following would provide the BEST protection against hacking? A. An application-level gateway B. A remote access server C. A proxy server D. Port scanning
An organization is experiencing a growing backlog of undeveloped applications. As part of a plan to eliminate this backlog, end-user computing with prototyping, supported by the acquisition of an interactive application generator system is being introduced. Which of the following areas is MOST critical to the ultimate success of this venture? A. Data control B. Systems analysis C. Systems programming D. Application programming
Which of the following pairs of functions should not be combined to provide proper segregation of duties? A. Tape librarian and computer operator B. Application programming and data entry C. Systems analyst and database administrator D. Security administrator and quality assurance
Cisco Certifications 
