Interested to Buy Any Domain ? << Click Here >> for more details...
To help mitigate the effects of a denial of service attack,
which mechanism can an Internet service provider (ISP) use
to identify Internet protocol (IP) packets from unauthorized
sources?
A. Inbound traffic filtering
B. Rate limiting
C. Reverse address lookup
D. Network performance monitoring
- 2 Answers
- 5164 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / guest
Answer: A
ISPs serve user organizations with pre-assigned IP
addresses. Inbound traffic filtering can filter out IP
packets that do not conform to the pre-assigned IP address
range. Rate limiting involves limiting the occurrences of
certain types of TCP/IP packets according to predefined
specifications. It is used to identify excess packets.
Reverse address lookup determines if the source address is
an IP packet of the true address of the computer (host) that
is actually sending the packet. It would identify address
substitution, but would not initially identify that it was
an unauthorized source. Network performance monitoring is a
way to monitor system performance for potential intrusions
on a real-time basis. It could help identify unusual traffic
volumes.
| Is This Answer Correct ? | 3 Yes | 0 No |
Which of the following BEST describes the early stages of an IS audit? A. Observing key organizational facilities. B. Assessing the IS environment. C. Understanding business process and environment applicable to the review. D. Reviewing prior IS audit reports.
The MAIN reason for requiring that all computer clocks across an organization be synchronized is to: A. prevent omission or duplication of transactions. B. ensure smooth data transition from client machines to servers. C. ensure that email messages have accurate time stamps. D. support the incident investigation process.
Functionality is a characteristic associated with evaluating the quality of software products throughout their lifecycle, and is BEST described as the set of attributes that bear on the: A. existence of a set of functions and their specified properties. B. ability of the software to be transferred from one environment to another. C. capability of software to maintain its level of performance under stated conditions. D. relationship between the performance of the software and the amount of resources used.
If a database is restored using before-image dumps, where should the process be restarted following an interruption? A. Before the last transaction B. After the last transaction C. The first transaction after the latest checkpoint D. The last transaction before the latest checkpoint
The use of a GANTT chart can: A. aid in scheduling project tasks. B. determine project checkpoints. C. ensure documentation standards. D. direct the post-implementation review.
An organization has been an Internet user for several years and the business plan now calls for initiating e-commerce via web-based transactions. Which of the following will LEAST impact transactions in e-commerce? A. Encryption is required B. Timed authentication is required C. Firewall architecture hides the internal network D. Traffic is exchanged through the firewall at the application layer only
Sales orders are automatically numbered sequentially at each of a retailer's multiple outlets. Small orders are processed directly at the outlets, with large orders sent to a central production facility. The MOST appropriate control to ensure that all orders transmitted to production are received and processed would be to: A. send and reconcile transaction counts and totals. B. have data transmitted back to the local site for comparison. C. compare data communications protocols with parity checking. D. track and account for the numerical sequence of sales orders at the production facility.
A PRIMARY benefit derived from an organization employing control self-assessment (CSA) techniques is that it: A. can identify high-risk areas that might need a detailed review later. B. allows IS auditors to independently assess risk. C. can be used as a replacement for traditional audits. D. allows management to relinquish responsibility for control.
An existing system is being extensively enhanced by extracting and reusing design and program components. This is an example of: A. reverse engineering. B. prototyping. C. software reuse. D. reengineering.
Which of the following is a data validation edit and control? A. Hash totals B. Reasonableness checks C. Online access controls D. Before and after image reporting
Which of the following would be the BEST population to take a sample from when testing program changes? A. Test library listings B. Source program listings C. Program change requests D. Production library listings
Which of the following is the MOST reliable sender authentication method? A. Digital signatures B. Asymmetric cryptography C. Digital certificates D. Message authentication code
Cisco Certifications 
