The PRIMARY objective of a firewall is to protect:
A. internal systems from exploitation by external threats.
B. external systems from exploitation by internal threats.
C. internal systems from exploitation by internal threats.
D. itself and attached systems against being used to attack
other systems.
Answer / guest
Answer: A
Firewall is placed at the point where the internal network
connects to the outside world I.e., Internet. It acts as a
security guard to the network, protecting it against
malicious attacks from outside the organization?s network.
It screens packets coming into and going out of the internal
network and prevents malicious packets from entering it and
denies access to prohibited resources on the Internet for
the internal users. It is neither the responsibility nor is
it possible for the organization to protect outside systems.
Packets whose source and destination IP addresses refer to
hosts within the same network are not sent out of the
network and hence do not pose a security threat. Choice D is
not a primary objective as this is just one form of attack
hackers resort to that the firewall protects the internal
network form.
| Is This Answer Correct ? | 12 Yes | 0 No |
Information for detecting unauthorized input from a terminal would be BEST provided by the: A. console log printout. B. transaction journal. C. automated suspense file listing. D. user error report.
When reviewing the implementation of a LAN the IS auditor should FIRST review the: A. node list. B. acceptance test report. C. network diagram. D. user's list.
A programmer included a routine into a payroll application to search for his/her own payroll number. As a result, if this payroll number does not appear during the payroll run, a routine will generate and place random numbers onto every paycheck. This routine is known as: A. scavenging. B. data leakage. C. piggybacking. D. a trojan horse.
Which of the following is the MOST likely reason why e-mail systems have become a useful source of evidence for litigation? A. Multiple cycles of backup files remain available. B. Access controls establish accountability for e-mail activity. C. Data classification regulates what information should be communicated via e-mail. D. Within the enterprise, a clear policy for using e-mail ensures that evidence is available.
Which of the following is MOST effective in controlling application maintenance? A. Informing users of the status of changes B. Establishing priorities on program changes C. Obtaining user approval of program changes D. Requiring documented user specifications for changes
While planning an audit, an assessment of risk should be made to provide: A. reasonable assurance that the audit will cover material items. B. definite assurance that material items will be covered during the audit work. C. reasonable assurance that all items will be covered by the audit. D. sufficient assurance that all items will be covered during the audit work.
When auditing a mainframe operating system, what would the IS auditor do to establish which control features are in operation? A. Examine the parameters used when the system was generated B. Discuss system parameter options with the vendor C. Evaluate the systems documentation and installation guide D. Consult the systems programmers
Separation of duties between computer opeartors and other data processing personnel is intended to: A. Prevent unauthorized modifications to program or data. B. Reduce overall cost of operations C. Allow operators to concentrate on their assigned duties D. Restrict operator access to data
Which of the following types of transmission media provide the BEST security against unauthorized access? A. Copper wire B. Twisted pair C. Fiber-optic cables D. Coaxial cables
The difference between a vulnerability assessment and a penetration test is that a vulnerability assessment: A. searches and checks the infrastructure to detect vulnerabilities, whereas penetration testing intends to exploit the vulnerabilities to probe the damage that could result from the vulnerabilities. B. and penetration tests are different names for the same activity. C. is executed by automated tools, whereas penetration testing is a totally manual process. D. is executed by commercial tools, whereas penetration testing is executed by public processes.
Which of the following data entry controls provides the GREATEST assurance that the data is entered correctly? A. Using key verification B. Segregating the data entry function from data entry verification C. Maintaining a log/record detailing the time, date, employee's initials/user id and progress of various data preparation and verification tasks D. Adding check digits
Which of the following is a measure of the size of an information system based on the number and complexity of a system's inputs, outputs and files? A. Program evaluation review technique (PERT) B. Rapid application development (RAD) C. Function point analysis (FPA) D. Critical path method (CPM)