Section: Governance and Management of IT

Section: Protection of Information Assets
Explanation:
A data administrator is responsible for defining data elements, data names and their relationship. Choices
A, C and D are functions of a database administrator (DBA)

The responsibilities of a telecommunications analyst include reviewing network load requirements in terms of current and future transaction volumes {choice B), assessing the impact of network load or terminal response times and network data transferrates (choice C), and recommending network balancing procedures and improvements (choice D). Monitoring systems performance and tracking problems as a result of program changes {choice A) would put the analyst in a self-monitoring role.

Explanation/Reference:
Explanation:
Iipchains is a free software based firewall running on earlier Linux. It is a rewrite of ipfwadm but is superseded by iptables in Linux 2.4 and above.
Iptables controls the packet filtering and NAT components within the Linux kernel. It is based on Netfilter, a framework which provides a set of hooks within the Linux kernel for intercepting and manipulating network packets.

Explanation/Reference:
Explanation:
A check digit is a numeric value that is calculated mathematically and is appended to data to ensure that the original data have not been altered or an incorrect, but valid, value substituted. This control is effective in detecting transposition and transcription errors.
Incorrect answers:
A. A range check is checking data that matches a predetermined range of values.
C. A validity check is programmed checking of the data validity in accordance with predetermined criteriA.
D. In a duplicate check, new or fresh transactions are matched to those previously entered to ensure that they are not already in the system.