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NEW QUESTION: 1
Detection of an exploit kit that is installed on a device is an example of which loC event category?
A. malware
B. IPS
C. security intelligence
D. firewall
Answer: B

NEW QUESTION: 2
If an operating system permits shared resources such as memory to be used sequentially by multiple users/application or subjects without a refresh of the objects/memory area, what security problem is MOST likely to exist?
A. Disclosure of residual data.
B. Denial of service through a deadly embrace.
C. Unauthorized obtaining of a privileged execution state.
D. Data leakage through covert channels.
Answer: A
Explanation:
Allowing objects to be used sequentially by multiple users without a refresh of the
objects can lead to disclosure of residual data. It is important that steps be taken to eliminate the
chance for the disclosure of residual data.
Object reuse refers to the allocation or reallocation of system resources to a user or, more
appropriately, to an application or process. Applications and services on a computer system may
create or use objects in memory and in storage to perform programmatic functions. In some
cases, it is necessary to share these resources between various system applications. However,
some objects may be employed by an application to perform privileged tasks on behalf of an
authorized user or upstream application. If object usage is not controlled or the data in those
objects is not erased after use, they may become available to unauthorized users or processes.
Disclosure of residual data and Unauthorized obtaining of a privileged execution state are both a
problem with shared memory and resources. Not clearing the heap/stack can result in residual
data and may also allow the user to step on somebody's session if the security token/identify was
maintained in that space. This is generally more malicious and intentional than accidental though.
The MOST common issue would be Disclosure of residual data.
The following answers are incorrect:
Unauthorized obtaining of a privileged execution state. Is incorrect because this is not a problem
with Object Reuse.
Data leakage through covert channels. Is incorrect because it is not the best answer. A covert
channel is a communication path. Data leakage would not be a problem created by Object Reuse.
In computer security, a covert channel is a type of computer security attack that creates a
capability to transfer information objects between processes that are not supposed to be allowed to communicate by the computer security policy. The term, originated in 1973 by Lampson is defined as "(channels) not intended for information transfer at all, such as the service program's effect on system load." to distinguish it from Legitimate channels that are subjected to access controls by COMPUSEC. Denial of service through a deadly embrace. Is incorrect because it is only a detractor.
References: Hernandez CISSP, Steven (2012-12-21). Official (ISC)2 Guide to the CISSP CBK, Third Edition ((ISC)2 Press) (Kindle Locations 4174-4179). Auerbach Publications. Kindle Edition. and https://www.fas.org/irp/nsa/rainbow/tg018.htm and http://en.wikipedia.org/wiki/Covert_channel

NEW QUESTION: 3

A. enable password secret line vty 0 login password cisco
B. service password-encryption line vty 0 4 login password cisco
C. service password-encryption line vty 1 login password cisco
D. service password-encryption access-list 1 permit 192.168.1.0 0.0.0.255 line vty 0 4 login password cisco access-class 1
Answer: C
Explanation:
Only one VTY connection is allowed which is exactly what's requested.
Incorrect answer: command.
line vty0 4
would enable all 5 vty connections.

NEW QUESTION: 4
Which of the following statements best describes the result of issuing the instance 3 vlans 7 command?
A. VLAN 7 is mapped to three MST instances.
B. Seven VLANs are mapped to MST instance 3.
C. VLAN 7 is mapped to MST instance 3.
D. VLAN 7 is mapped to switchport 3.
Answer: C
Explanation:
Explanation/Reference:
Explanation:
When the instance 3 vlans 7 command is issued, the virtual local area network (VLAN) 7 is mapped to
Multiple Spanning Tree (MST) Protocol instance 3. MST, which is defined by the 802.1s standard, maps a
distinct group of VLANs to one STP instance. Multiple STP instances can be used with MST. The Cisco
implementation of MST supports 256 instances. However, each instance must support a different group of
VLANs because each VLAN can only be mapped to one instance.
To map one or more VLANs to an MST instance, issue the instance instance-ID vlans vlan-range
command, where ID is the number of the MST instance and vlan-range is the VLAN or VLANs that should
be mapped to the instance. For example, the command instance 1 vlans 14-16,99 maps VLANs 14
through 16 and VLAN 99 to MST instance 1.
The instance 3 vlans 7 command will not map VLAN 7 to switchport 3. The instance vlans command
cannot be used to map multiple instances to a single VLAN. Each VLAN can only be mapped to one
instance. When the instance 3 vlans 7 command is issued, only a single VLAN will be mapped to MST
instance 3.
Objective:
Layer 2 Technologies
Sub-Objective:
Configure and verify spanning tree
References:
Cisco IOS LAN Switching Command Reference > bridge-domain through instance (VLAN) > instance
(VLAN)
Cisco > Support > Technology Support > LAN Switching > Spanning Tree Protocol > Technology
Information > Technology White Paper > Understanding Multiple Spanning Tree Protocol (802.1s) >
Document ID: 24248