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ISACA Certified Information Systems Auditor CISA Prüfungsfragen mit Lösungen (Q592-Q597):

592. Frage
Which of the following PBX feature provides the possibility to break into a busy line to inform another user
of an important message?

A. Account Codes
B. Access Codes
C. Tenanting
D. Override

Antwort: D

Begründung:
Section: Protection of Information Assets
Explanation/Reference:
Override feature of PBS provides for the possibility to break into a busy line to inform another user an
important message.
For CISA exam you should know below mentioned PBS features and Risks
System Features
Description
Risk
Automatic Call distribution
Allows a PBX to be configured so that incoming calls are distributed to the next available agent or placed
on-hold until one become available
Tapping and control of traffic
Call forwarding
Allow specifying an alternate number to which calls will be forwarded based on certain condition
User tracking
Account codes
Used to:
Track calls made by certain people or for certain projects for appropriate billing
Dial-In system access (user dials from outside and gain access to normal feature of the PBX)
Changing the user class of service so a user can access a different set of features (i.e. the override
feature)
Fraud, user tracking, non authorized features
Access Codes
Key for access to specific feature from the part of users with simple instruments, i.e. traditional analog
phones.
Non-authorized features
Silent Monitoring
Silently monitors other calls
Eavesdropping
Conferencing
Allows for conversation among several users
Eavesdropping, by adding unwanted/unknown parties to a conference
override(intrude)
Provides for the possibility to break into a busy line to inform another user an important message
Eavesdropping
Auto-answer
Allows an instrument to automatically go when called usually gives an auditor or visible warning which can
easily turned off
Gaining information not normally available, for various purpose
Tenanting
Limits system user access to only those users who belong to the same tenant group - useful when one
company leases out part of its building to other companies and tenants share an attendant, trunk lines,etc
Illegal usage, fraud, eavesdropping
Voice mail
Stores messages centrally and - by using a password - allows for retrieval from inside or outside lines.
Disclosure or destruction of all messages of a user when that user's password in known or discovered by
an intruder, disabling of the voice mail system and even the entire switch by lengthy messages or
embedded codes, illegal access to external lines.
Privacy release
Supports shared extensions among several devices, ensuring that only one device at a time can use an
extension. Privacy release disables the security by allowing devices to connect to an extension already in
use.
Eavesdropping
No busy extension
Allows calls to an in-use extension to be added to a conference when that extension is on conference and
already off-hook
Eavesdropping a conference in progress
Diagnostics
Allows for bypassing normal call restriction procedures. This kind of diagnostic is sometimes available from
any connected device. It is a separate feature, in addition to the normal maintenance terminal or attendant
diagnostics
Fraud and illegal usage
Camp-on or call waiting
When activated, sends a visual audible warning to an off-hook instrument that is receiving another call.
Another option of this feature is to conference with the camped-on or call waiting
Making the called individual a party to a conference without knowing it.
Dedicated connections
Connections made through the PBX without using the normal dialing sequences. It can be used to create
hot-lines between devices i.e. one rings when the other goes off-hook. It is also used for data connections
between devices and the central processing facility
Eavesdropping on a line
The following were incorrect answers:
Account Codes - that are used to:
Track calls made by certain people or for certain projects for appropriate billing
Dial-In system access (user dials from outside and gain access to normal feature of the PBX)
Changing the user class of service so a user can access a different set of features (i.e. the override
feature)
Access Codes - Key for access to specific feature from the part of users with simple instruments, i.e.
traditional analog phones.
Tenanting - Limits system user access to only those users who belong to the same tenant group useful
when one company leases out part of its building to other companies and tenants share an attendant, trunk
lines,etc
The following reference(s) were/was used to create this question:
CISA review manual 2014 Page number 358

593. Frage
Which of the following protocol does NOT work at the Application layer of the TCP/IP Models?

A. NTP
B. FTP
C. TCP
D. HTTP

Antwort: C

Begründung:
Explanation/Reference:
The NOT keyword is used in the question. You need to find out a protocol which does not work at application layer. TCP protocol works at transport layer of a TCP/IP models.
For your exam you should know below information about TCP/IP model:
Network Models

Layer 4. Application Layer
Application layer is the top most layer of four layer TCP/IP model. Application layer is present on the top of the Transport layer. Application layer defines TCP/IP application protocols and how host programs interface with Transport layer services to use the network.
Application layer includes all the higher-level protocols like DNS (Domain Naming System), HTTP (Hypertext Transfer Protocol), Telnet, SSH, FTP (File Transfer Protocol), TFTP (Trivial File Transfer Protocol), SNMP (Simple Network Management Protocol), SMTP (Simple Mail Transfer Protocol) , DHCP (Dynamic Host Configuration Protocol), X Windows, RDP (Remote Desktop Protocol) etc.
Layer 3. Transport Layer
Transport Layer is the third layer of the four layer TCP/IP model. The position of the Transport layer is between Application layer and Internet layer. The purpose of Transport layer is to permit devices on the source and destination hosts to carry on a conversation. Transport layer defines the level of service and status of the connection used when transporting data.
The main protocols included at Transport layer are TCP (Transmission Control Protocol) and UDP (User Datagram Protocol).
Layer 2. Internet Layer
Internet Layer is the second layer of the four layer TCP/IP model. The position of Internet layer is between Network Access Layer and Transport layer. Internet layer pack data into data packets known as IP datagram's, which contain source and destination address (logical address or IP address) information that is used to forward the datagram's between hosts and across networks. The Internet layer is also responsible for routing of IP datagram's.
Packet switching network depends upon a connectionless internetwork layer. This layer is known as Internet layer. Its job is to allow hosts to insert packets into any network and have them to deliver independently to the destination. At the destination side data packets may appear in a different order than they were sent. It is the job of the higher layers to rearrange them in order to deliver them to proper network applications operating at the Application layer.
The main protocols included at Internet layer are IP (Internet Protocol), ICMP (Internet Control Message Protocol), ARP (Address Resolution Protocol), RARP (Reverse Address Resolution Protocol) and IGMP (Internet Group Management Protocol).
Layer 1. Network Access Layer
Network Access Layer is the first layer of the four layer TCP/IP model. Network Access Layer defines details of how data is physically sent through the network, including how bits are electrically or optically signaled by hardware devices that interface directly with a network medium, such as coaxial cable, optical fiber, or twisted pair copper wire.
The protocols included in Network Access Layer are Ethernet, Token Ring, FDDI, X.25, Frame Relay etc.
The most popular LAN architecture among those listed above is Ethernet. Ethernet uses an Access Method called CSMA/CD (Carrier Sense Multiple Access/Collision Detection) to access the media, when Ethernet operates in a shared media. An Access Method determines how a host will place data on the medium.
IN CSMA/CD Access Method, every host has equal access to the medium and can place data on the wire when the wire is free from network traffic. When a host wants to place data on the wire, it will check the wire to find whether another host is already using the medium. If there is traffic already in the medium, the host will wait and if there is no traffic, it will place the data in the medium. But, if two systems place data on the medium at the same instance, they will collide with each other, destroying the data. If the data is destroyed during transmission, the data will need to be retransmitted. After collision, each host will wait for a small interval of time and again the data will be retransmitted.
Protocol Data Unit (PDU):
Protocol Data Unit - PDU

The following answers are incorrect:
HTTP, FTP and NTP protocols works at application layer in TCP/IP model.
The following reference(s) were/was used to create this question:
CISA review manual 2014 page number 272

594. Frage
When developing a business continuity plan (BCP), which of the following steps should be completed FIRST?

A. Review the business continuity insurance policy.
B. Identify alternatives to critical applications.
C. Ensure that offsite backups can be efficiently restored.
D. Carry out a risk assessment.

Antwort: D

595. Frage
IT disaster recovery time objectives (RTOs) should be based on the:

A. business-defined criticality of the systems.
B. maximum tolerable downtime (MTD).
C. nature of the outage
D. maximum tolerable loss of data.

Antwort: A

Begründung:
Explanation
IT disaster recovery time objectives (RTOs) are the maximum acceptable time that an IT system can be unavailable after a disaster before it causes unacceptable consequences for the business. IT RTOs should be based on the business-defined criticality of the systems, which reflects how important they are for supporting the business processes and functions. The maximum tolerable loss of data, the nature of the outage, and the maximum tolerable downtime (MTD) are also factors that affect the IT RTOs, but they are not the primary basis for determining them.

596. Frage
Which of the following is the BEST audit procedure to determine whether a firewall is configured in compliance with the organization's security policy?

A. Reviewing the parameter settings
B. Reviewing the system log
C. Reviewing the actual procedures
D. Interviewing the firewall administrator

Antwort: A

Begründung:
Explanation
The best audit procedure to determine whether a firewall is configured in compliance with the organization's security policy is reviewing the parameter settings. Parameter settings are values or options that define how a firewall operates and functions, such as rules, filters, ports, protocols, etc. By reviewing the parameter settings of a firewall, an IS auditor can verify whether they match with the organization's security policy, which is a document that outlines the security objectives, requirements, and guidelines for an organization's information systems and resources. Reviewing the system log is a possible audit procedure to determine whether a firewall is configured in compliance with the organization's security policy, but it is not the best one, as a system log records events or activities that occur on a firewall, such as connections, requests, responses, errors, alerts, etc., and may not indicate whether they comply with the organization's security policy. Interviewing the firewall administrator is a possible audit procedure to determine whether a firewall is configured in compliance with the organization's security policy, but it is not the best one, as a firewall administrator may not provide accurate or reliable information about the firewall configuration, and may have conflicts of interest or ulterior motives. Reviewing the actual procedures is a possible audit procedure to determine whether a firewall is configured in compliance with the organization's security policy, but it is not the best one, as actual procedures describe how a firewall is configured and maintained, such as installation, testing, updating, etc., and may not reflect whether they comply with the organization's security policy.

597. Frage
......

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CISA Trainingsmaterialien: Certified Information Systems Auditor & CISA Lernmittel & ISACA CISA Quiz

CISA Schulungsangebot & CISA Prüfungsaufgaben

ISACA Certified Information Systems Auditor CISA Prüfungsfragen mit Lösungen (Q592-Q597):

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