The device that connects two networks at the highest level
of the ISO-OSI framework ( i.e., application layer) is a
A. Gateway
B. Router
C. Bridge
D. Brouter
Answer / guest
Answer: A
Gateway is used to connect two networks using dissimilar
protocols at the lower layers through which connectivity is
established namely physical, data link, network and
transport layers. Router is a network layer device for which
the two connecting networks must have the same network layer
protocol. Bridge operates in the data link layer. It should
have data link layer protocols, such as token ring,
Ethernet, in use in both the networks. Brouter is
essentially a bridge with some routing functionality.
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An advantage in using a bottom-up versus a top-down approach to software testing is that: A. interface errors are detected earlier. B. confidence in the system is achieved earlier. C. errors in critical modules are detected earlier. D. major functions and processing are tested earlier.
A hub is a device that connects: A. two LANs using different protocols. B. a LAN with a WAN. C. a LAN with a metropolitan area network (MAN). D. two segments of a single LAN.
While developing a risk-based audit program, which of the following would the IS auditor MOST likely focus on? A. Business processes B. Critical IT applications C. Corporate objectives D. Business strategies
Which of the following is MOST effective in controlling application maintenance? A. Informing users of the status of changes B. Establishing priorities on program changes C. Obtaining user approval of program changes D. Requiring documented user specifications for changes
Various standards have emerged to assist IS organizations in achieving an operational environment that is predictable, measurable and repeatable. The standard that provides the definition of the characteristics and the associated quality evaluation process to be used when specifying the requirements for and evaluating the quality of software products throughout their life cycle is: A. ISO 9001. B. ISO 9002. C. ISO 9126. D. ISO 9003.
An IS auditor, performing a review of an application?s controls, discovers a weakness in system software, which could materially impact the application. The IS auditor should: A. Disregard these control weaknesses as a system software review is beyond the scope of this review. B. Conduct a detailed system software review and report the control weaknesses. C. Include in the report a statement that the audit was limited to a review of the application?s controls. D. Review the system software controls as relevant and recommend a detailed system software review.
An enterprise has established a steering committee to oversee its e-business program. The steering committee would MOST likely be involved in the: A. documentation of requirements. B. escalation of project issues. C. design of interface controls. D. specification of reports.
Which of the following would normally be found in application run manuals? A. Details of source documents B. Error codes and their recovery actions C. Program flowcharts and file definitions D. Change records for the application source code
The knowledge base of an expert system that uses questionnaires to lead the user through a series of choices before a conclusion is reached is known as: A. rules. B. decision trees. C. semantic nets. D. data flow diagrams.
Which of the following protocols would be involved in the implementation of a router and interconnectivity device monitoring system? A. Simple network management B. File transfer C. Simple Mail Transfer Protocol D. Telnet
An IS auditor performing an application maintenance audit would review the log of program changes for the: A. authorization for program changes. B. creation date of a current object module. C. number of program changes actually made. D. creation date of a current source program.
The process of using interpersonal communication skills to get unauthorized access to company assets is called: A. wire tapping. B. trap doors. C. war dialing. D. social engineering.