Interested to Buy Any Domain ? << Click Here >> for more details...
Transmitting redundant information with each character or
frame to facilitate detection and correction of errors is
called:
A. feedback error control.
B. block sum check.
C. forward error control.
D. cyclic redundancy check.
- 1 Answers
- 7624 Views
- I also Faced
- E-Mail Answers
Answer / guest
Answer: C
Forward error control involves transmitting additional
redundant information with each character or frame to
facilitate detection and correction of errors. In feedback
error control, only enough additional information is
transmitted so the receiver can identify that an error has
occurred. Choices B and D are both error detection methods
but not error correction methods. Block sum check is an
extension of parity check wherein an additional set of
parity bits is computed for a block of characters. A cyclic
redundancy check is a technique wherein a single set of
check digits is generated for each frame transmitted, based
on the contents of the frame.
| Is This Answer Correct ? | 10 Yes | 0 No |
Which of the following business recovery strategies would require the least expenditure of funds? A. Warm site facility B. Empty shell facility C. Hot site subscription D. Reciprocal agreement
A probable advantage to an organization that has outsourced its data processing services is that: A. needed IS expertise can be obtained from the outside. B. greater control can be exercised over processing. C. processing priorities can be established and enforced internally. D. greater user involvement is required to communicate user needs.
The PRIMARY reason for separating the test and development environments is to: A. restrict access to systems under test. B. segregate user and development staff. C. control the stability of the test environment. D. secure access to systems under development.
The extent to which data will be collected during an IS audit should be determined, based on the: A. availability of critical and required information. B. auditor's familiarity with the circumstances. C. auditee's ability to find relevant evidence. D. purpose and scope of the audit being done.
Which is the first software capability maturity model (CMM) level to include a standard software development process? A. Initial (level 1) B. Repeatable (level 2) C. Defined (level 3) D. Optimizing (level 5)
When an IS auditor obtains a list of current users with access to a WAN/LAN and verifies that those listed are active associates, the IS auditor is performing a: A. compliance test. B. substantive test. C. statistical sample. D. risk assessment.
Which of the following audit procedures would an IS auditor be LEAST likely to include in a security audit? A. Review the effectiveness and utilization of assets. B. Test to determine that access to assets is adequate. C. Validate physical, environmental and logical access policies per job profiles. D. Evaluate asset safeguards and procedures that prevent unauthorized access to the assets.
During an audit of an enterprise that is dedicated to e-commerce, the IS manager states that digital signatures are used in the establishment of its commercial relations. To substantiate this, the IS auditor must prove that which of the following is used? A. A biometric, digitalized and encrypted parameter with the customer's public key B. A hash of the data that is transmitted and encrypted with the customer's private key C. A hash of the data that is transmitted and encrypted with the customer's public key D. The customer's scanned signature, encrypted with the customer's public key
In the ISO/OSI model, which of the following protocols is the FIRST to establish security for the user application? A. Session layer. B. Transport layer C. Network layer D. Presentation layer
Requiring passwords to be changed on a regular basis, assigning a new one-time password when a user forgets his/hers, and requiring users not to write down their passwords are all examples of: A. audit objectives. B. audit procedures. C. controls objectives. D. control procedures.
To affix a digital signature to a message, the sender must first create a message digest by applying a cryptographic hashing algorithm against: A. the entire message and thereafter enciphering the message digest using the sender's private key. B. any arbitrary part of the message and thereafter enciphering the message digest using the sender's private key. C. the entire message and thereafter enciphering the message using the sender's private key. D. the entire message and thereafter enciphering the message along with the message digest using the sender's private key.
In a small organization, an employee performs computer operations and, when the situation demands, program modifications. Which of the following should the IS auditor recommend? A. Automated logging of changes to development libraries B. Additional staff to provide separation of duties C. Procedures that verify that only approved program changes are implemented D. Access controls to prevent the operator from making program modifications
Cisco Certifications 
