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EC-COUNCIL EC-Council Certified Network Defender CND Sample Questions (Q136-Q141):

NEW QUESTION # 136
Alice wants to prove her identity to Bob. Bob requests her password as proof of identity, which Alice dutifully provides (possibly after some transformation like a hash function); meanwhile, Eve is eavesdropping the conversation and keeps the password. After the interchange is over, Eve connects to Bob posing as Alice; when asked for a proof of identity, Eve sends Alice's password read from the last session, which Bob accepts.
Which of the following attacks is being used by Eve?

• A. Cross site scripting
• B. Replay
• C. Fire walking
• D. Session fixation

Answer: B Explanation:
Eve is using Replay attack. A replay attack is a type of attack in which attackers capture packets containing passwords or digital signatures whenever packets pass between two hosts on a network. In an attempt to obtain an authenticated connection, the attackers then resend the captured packet to the system. In this type of attack, the attacker does not know the actual password, but can simply replay the captured packet. Session tokens can be used to avoid replay attacks. Bob sends a one-time token to Alice, which Alice uses to transform the password and send the result to Bob (e.g. computing a hash function of the session token appended to the password). On his side Bob performs the same computation; if and only if both values match, the login is successful. Now suppose Mallory has captured this value and tries to use it on another session; Bob sends a different session token, and when Mallory replies with the captured value it will be different from Bob's computation.
Answer option C is incorrect. In the cross site scripting attack, an attacker tricks the user's computer into running code, which is treated as trustworthy because it appears to belong to the server, allowing the attacker to obtain a copy of the cookie or perform other operations.
Answer option B is incorrect. Firewalking is a technique for gathering information about a remote network protected by a firewall. This technique can be used effectively to perform information gathering attacks. In this technique, an attacker sends a crafted packet with a TTL value that is set to expire one hop past the firewall.
Answer option D is incorrect. In session fixation, an attacker sets a user's session id to one known to him, for example by sending the user an email with a link that contains a particular session id. The attacker now only has to wait until the user logs in.
NEW QUESTION # 137
Which of the following statements are true about IPv6 network? Each correct answer represents a complete solution. Choose all that apply.

• A. It provides enhanced authentication and security.
• B. The interoperability, the IPv4 addresses using the last 32 bits of the IPv6 address.
• C. It uses a longer subnet masks as those used for IPv4.
• D. It uses 128-bit addresses.
• E. It's more of available IP addresses.

Answer: A,B,D,E
NEW QUESTION # 138
Which of the following is a management process that provides a framework for promoting quick recovery and the capability for an effective response to protect the interests of its brand, reputation, and stakeholders?

• A. Business Continuity Management
• B. Log analysis
• C. Patch management
• D. Incident handling

Answer: A Explanation:
Business Continuity Management is a management process that determines potential impacts that are likely to threaten an organization. It provides a framework for promoting quick recovery and the capability for an effective response to protect the interests of its brand, reputation, and stakeholders. Business continuity management includes disaster recovery, business recovery, crisis management, incident management, emergency management, product recall, contingency planning, etc. Answer option B is incorrect. Patch management is an area of systems management that involves acquiring, testing, and installing multiple patches (code changes) to an administered computer system. Patch management includes the following tasks: Maintaining current knowledge of available patches Deciding what patches are appropriate for particular systems Ensuring that patches are installed properly Testing systems after installation, and documenting all associated procedures, such as specific configurations required A number of products are available to automate patch management tasks, including Ring Master's Automated Patch Management, Patch Link Update, and Gibraltar's Ever guard. Answer option A is incorrect. This option is invalid. Answer option C is incorrect. Incident handling is the process of managing incidents in an Enterprise, Business, or an Organization. It involves the thinking of the prospective suitable to the enterprise and then the implementation of the prospective in a clean and manageable manner. It involves completing the incident report and presenting the conclusion to the management and providing ways to improve the process both from a technical and administrative aspect. Incident handling ensures that the overall process of an enterprise runs in an uninterrupted continuity.
NEW QUESTION # 139
You are taking over the security of an existing network. You discover a machine that is not being used as such, but has software on it that emulates the activity of a sensitive database server.
What is this?

• A. A reactive IDS.
• B. A Virus
• C. A Honey Pot
• D. A Polymorphic Virus

Answer: C Explanation:
A honey pot is a device specifically designed to emulate a high value target such as a database server or entire sub section of your network. It is designed to attract the hacker's attention.
NEW QUESTION # 140
Which of the following standards is an amendment to the original IEEE 802.11 and specifies security
mechanisms for wireless networks?

• A. 802.11b
• B. 802.11i
• C. 802.11e
• D. 802.11a

Answer: B Explanation:
Explanation
Explanation:
802.11i is an amendment to the original IEEE 802.11. This standard specifies security mechanisms for
wireless networks. It replaced the short Authentication and privacy clause of the original standard with a
detailed Security clause. In the process, it deprecated the broken WEP. 802.11i supersedes the previous
security specification, Wired Equivalent Privacy (WEP), which was shown to have severe security weaknesses.
Wi-Fi Protected Access (WPA) had previously been introduced by the Wi-Fi Alliance as an intermediate
solution to WEP insecurities. The Wi-Fi Alliance refers to their approved, interoperable implementation of the
full 802.11i as WPA2, also called RSN (Robust Security Network). 802.11i makes use of the Advanced
Encryption Standard (AES) block cipher, whereas WEP and WPA use the RC4 stream cipher.
Answer option D is incorrect. 802.11a is an amendment to the IEEE 802.11 specification that added a higher
data rate of up to 54 Mbit/s using the 5 GHz band. It has seen widespread worldwide implementation,
particularly within the corporate workspace. Using the 5 GHz band gives 802.11a a significant advantage, since
the 2.4 GHz band is heavily used to the point of being crowded. Degradation caused by such conflicts can
cause frequent dropped connections and degradation of service.
Answer option A is incorrect. 802.11b is an amendment to the IEEE 802.11 specification that extended
throughput up to 11 Mbit/s using the same 2.4 GHz band. This specification under the marketing name of Wi-Fi
has been implemented all over the world. 802.11b is used in a point-to-multipoint configuration, wherein an
access point communicates via an omni-directional antenna with one or more nomadic or mobile clients that
are located in a coverage area around the access point.
Answer option B is incorrect. The 802.11e standard is a proposed enhancement to the 802.11a and 802.11b
wireless LAN (WLAN) specifications. It offers quality of service (QoS) features, including the prioritization of
data, voice, and video transmissions. 802.11e enhances the 802.11 Media Access Control layer (MAC layer)
with a coordinated time division multiple access (TDMA) construct, and adds error-correcting mechanisms for
delay-sensitive applications such as voice and video.
NEW QUESTION # 141
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