Which of the following network topologies yields the
GREATEST redundancy in the event of the failure of one node?
A. Mesh
B. Star
C. Ring
D. Bus
Answer / guest
Answer: A
In mesh configuration, devices are connected with many
redundant interconnections among network nodes, thereby,
yielding the greatest redundancy in the event that one of
the nodes fail, in which case network traffic can be
redirected to another node. In star configuration, each
station is linked to the main hub. The main hub establishes
the connection between stations by message or line
switching. Therefore, failure of a node results in the
disruption of the network. In ring configuration, all nodes
are connected to one another?forming a circle; therefore,
the failure of a node results in the disruption of the
network. In bus configuration, all devices are linked along
one communication line with two end points called the
backbone; therefore, the failure of a node results in the
disruption of the network.
| Is This Answer Correct ? | 4 Yes | 0 No |
Functional acknowledgements are used: A. as an audit trail for EDI transactions. B. to functionally describe the IS department. C. to document user roles and responsibilities. D. as a functional description of application software.
Which of the following is an advantage of an integrated test facility (ITF)? A. It uses actual master files or dummies and the IS auditor does not have to review the source of the transaction. B. Periodic testing does not require separate test processes. C. It validates application systems and tests the ongoing operation of the system. D. It eliminates the need to prepare test data.
An enterprisewide network security architecture of public key infrastructure (PKI) would be comprised of: A. A public key cryptosystem, private key cryptosystem and digital certificate B. A public key cryptosystem, symmetric encryption and certificate authorities C. A symmetric encryption, digital certificate and kerberos authentication D. A public key cryptosystem, digital certificate and certificate authorities
Software maintainability BEST relates to which of the following software attributes? A. Resources needed to make specified modifications. B. Effort needed to use the system application. C. Relationship between software performance and the resources needed. D. Fulfillment of user needs.
A company performs full backup of data and programs on a regular basis. The primary purpose of this practice is to: A. maintain data integrity in the applications. B. restore application processing after a disruption. C. prevent unauthorized changes to programs and data. D. ensure recovery of data processing in case of a disaster.
Which of the following duties would be a concern if performed along with systems administration? A. Maintenance of access rules B. Review of system audit trail C. Data librarian D. Performance monitoring
Which of the following would be the BEST method for ensuring that critical fields in a master record have been updated properly? A. Field checks B. Control totals C. Reasonableness checks D. A before-and-after maintenance report
An organization wants to enforce data integrity principles and achieve faster performance/execution in a database application. Which of the following design principles should be applied? A. User (customized) triggers B. Data validation at the front end C. Data validation at the back end D. Referential integrity
Which of the following is the MOST effective technique for providing security during data transmission? A. Communication log B. Systems software log C. Encryption D. Standard protocol
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 is the MOST critical and contributes the MOST to the quality of data in a data warehouse? A. Accuracy of the source data B. Credibility of the data source C. Accuracy of the extraction process D. Accuracy of the data transformation
Failure to adequately define or manage the requirements for a system can result in a number of risks. The GREATEST risk is: A. inadequate user involvement. B. inadequate allocation of resources. C. scope creep. D. an incorrect estimation of the critical path.