- (Topic 3)
Which of the following commands will you use to watch a log file /var/adm/messages while the log file is updating continuously?
Correct Answer:D
The tail command is used to display the last few lines of a text file or piped data. It has a special command line option -f (follow) that allows a file to be monitored. Instead of displaying the last few lines and exiting, tail displays the lines and then monitors the file. As new lines are added to the file by another process, tail updates the display. This is particularly useful for monitoring log files. The following command will display the last 10 lines of messages and append new lines to the display as new lines are added to messages: tail -f /var/adm/messages Answer B is incorrect. The tail command will display the last 10 lines (default) of the log file. Answer C is incorrect. The concatenate (cat) command is used to display or print the contents of a file. Syntax: cat filename For example, the following command will display the contents of the /var/log/dmesg file: cat /var/log/dmesg Note: The more command is used in conjunction with the cat command to prevent scrolling of the screen while displaying the contents of a file. Answer A is incorrect. The less command is used to view (but not change) the contents of a text file, one screen at a time. It is similar to the more command. However, it has the extended capability of allowing both forward and backward navigation through the file. Unlike most Unix text editors/viewers, less does not need to read the entire file before starting; therefore, it has faster load times with large files. The command syntax of the less command is as follows: less [options] file_name Where,
- (Topic 1)
A Web developer with your company wants to have wireless access for contractors that come in to work on various projects. The process of getting this approved takes time. So rather than wait, he has put his own wireless router attached to one of the network ports in his department. What security risk does this present?
Correct Answer:D
Any unauthorized Wireless Access Point (WAP) is a serious security breach. Its configuration might be very unsecure. For example it might not use encryption or MAC filtering, thus allowing anyone in range to get on the network.
- (Topic 4)
Which of the following NFS mount options specifies whether a program using a file via an NFS connection should stop and wait for the server to come back online, if the host serving the exported file system is unavailable, or if it should report an error?
Correct Answer:B
The hard or soft NFS mount options are used to specify whether a program using a file via an NFS connection should stop and wait (hard) for the server to come back online, if the host serving the exported file system is unavailable, or if it should report an error. Answer A is incorrect. The intr NFS mount option allows NFS requests to be interrupted if the server goes down or cannot be reached. Answer C is incorrect. The nfsvers=2 or nfsvers=3 NFS mount options are used to specify which version of the NFS protocol to use. Answer D is incorrect. The fsid=num NFS mount option forces the file handle and file attributes settings on the wire to be num.
- (Topic 2)
Which of the following is a prevention-driven activity to reduce errors in the project and to help the project meet its requirements?
Correct Answer:D
Quality assurance is the application of planned, systematic quality activities to ensure that the project will employ all processes needed to meet requirements. It is a prevention-driven activity to reduce errors in the project and to help the project meet its requirements. Answer A is incorrect. Audit sampling is an application of the audit procedure that enables the IT auditor to evaluate audit evidence within a class of transactions for the purpose of forming a conclusion concerning the population. When designing the size and structure of an audit sample, the IT auditor should consider the audit objectives determined when planning the audit, the nature of the population, and the sampling and selection methods. Answer C is incorrect. The process of limiting access to the resources of a Web site is called access control. Access control can be performed in the following ways: Registering the user in order to access the resources of the Web site. This can be confirmed by the user name and password. Limiting the time during which resources of the Web site can be used. For example, the Web site can be viewed between certain hours of a day. Answer B is incorrect. It is the practice of managing the whole life cycle (design, construction, commissioning, operating, maintaining, repairing, modifying, replacing and decommissioning/disposal) of physical and infrastructure assets such as structures, production, distribution networks, transport systems, buildings, and other physical assets.
- (Topic 3)
Which of the following backup sites takes the longest recovery time?
Correct Answer:C
A cold backup site takes the longest recovery time. It is the most inexpensive type of backup site for an organization to operate. It does not include backed up copies of data and information from the original location of the organization, nor does it include hardware already set up. The lack of hardware contributes to the minimal startup costs of the cold site, but requires additional time following the disaster to have the operation running at a capacity close to that prior to the disaster. Answer D is incorrect. A hot site is a duplicate of the original site of the organization, with full computer systems as well as near- complete backups of user data. Real time synchronization between the two sites may be used to completely mirror the data environment of the original site using wide area network links and specialized software. Ideally, a hot site will be up and running within a matter of hours or even less. Answer A is incorrect. Although a mobile backup site provides rapid recovery, it does not provide full recovery in time. Hence, a hot site takes the shortest recovery time. Answer B is incorrect. A warm site is, quite logically, a compromise between hot and cold. These sites will have hardware and connectivity already established, though on a smaller scale than the original production site or even a hot site. Warm sites will have backups on hand, but they may not be complete and may be between several days and a week old. An example would be backup tapes sent to the warm site by courier.