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A control for a company that wants to prevent virus-infected
programs (or other type of unauthorized modified programs)
would be to:
A. utilize integrity checkers.
B. verify program's lengths.
C. backup the source and object code.
D. implement segregation of duties.
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Answer: A
Integrity checkers (such as the ones included in many
antivirus programs or freeware, like tripwire) compute for
each selected program some type of hash, checksum or cyclic
redundancy check (CRC), then store this number in a database
file. Before each execution of the program, the checker
recomputes the hash or checksum and compares it to the value
stored in the database. If the values do not match, the
program is not executed thus detecting a possible virus or
modified program. Verifying a progam's length is not
practical, and some virus do not affect the length of
infected programs. A backup of source and object code does
not help detect a modified program. Segregation of duties is
useful to minimize risk, however, it does not detect a
modified program.
| Is This Answer Correct ? | 3 Yes | 1 No |
Where adequate segregation of duties between operations and programming are not achievable, the IS auditor should look for: A. compensating controls. B. administrative controls. C. corrective controls. D. access controls.
Which of the following independent duties is traditionally performed by the data control group? A. Access to data B. Authorization tables C. Custody of assets D. Reconciliation
Which of the following BEST describes the objectives of following a standard system development methodology? A. To ensure that appropriate staffing is assigned and to provide a method of controlling costs and schedules B. To provide a method of controlling costs and schedules and to ensure communication among users, IS auditors, management and IS personnel C. To provide a method of controlling costs and schedules and an effective means of auditing project development D. To ensure communication among users, IS auditors, management and personnel and to ensure that appropriate staffing is assigned
Congestion control is BEST handled by which OSI layer? A. Data link B. Session layer C. Transport layer D. Network layer
An IS auditor involved as a team member in the detailed system design phase of a system under development would be MOST concerned with: A. internal control procedures. B. user acceptance test schedules. C. adequacy of the user training program. D. clerical processes for resubmission of rejected items.
What is a risk associated with attempting to control physical access to sensitive areas, such as computer rooms, through card keys, locks, etc.? A. Unauthorized individuals wait for controlled doors to open and walk in behind those authorized. B. The contingency plan for the organization cannot effectively test controlled access practices. C. Access cards, keys, and pads can be easily duplicated allowing easy compromise of the control. D. Removing access for people no longer authorized is complex.
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.
Which of the following can be used to verify output results and control totals by matching them against the input data and control totals? A. Batch header forms B. Batch balancing C. Data conversion error corrections D. Access controls over print spools
Which of the following fire suppressant systems would an IS auditor expect to find when conducting an audit of an unmanned computer center? A. Carbon dioxide B. Halon C. Dry-pipe sprinkler D. Wet-pipe sprinkler
In a TCP/IP-based network, an IP address specifies a: A. network connection. B. router/gateway. C. computer in the network. D. device on the network.
When logging on to an online system, which of the following processes would the system perform FIRST? A. Initiation B. Verification C. Authorization D. Authentication
Which of the following facilitates program maintenance? A. More cohesive and loosely coupled programs B. Less cohesive and loosely coupled programs C. More cohesive and strongly coupled programs D. Less cohesive and strongly coupled programs
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