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EC-COUNCIL EC-Council Certified Network Defender CND Sample Questions (Q110-Q115):
NEW QUESTION # 110
Which of the following layers is closest to the end user?
- A. Presentation layer
- B. Application layer
- C. Session layer
- D. Physical layer
Answer: B
Explanation:
Explanation
NEW QUESTION # 111
Which of the following help in estimating and totaling up the equivalent money value of the benefits and costs to the community of projects for establishing whether they are worthwhile?
Each correct answer represents a complete solution. Choose all that apply.
- A. Business Continuity Planning
- B. Benefit-Cost Analysis
- C. Cost-benefit analysis
- D. Disaster recovery
Answer: B,C
Explanation:
Cost-benefit analysis is a process by which business decisions are analyzed. It is used to estimate and total up the equivalent money value of the benefits and costs to the community of projects for establishing whether they are worthwhile. It is a term that refers both to:
helping to appraise, or assess, the case for a project, program, or policy proposal; an approach to making economic decisions of any kind. Under both definitions, the process involves, whether explicitly or implicitly, weighing the total expected costs against the total expected benefits of one or more actions in order to choose the best or most profitable option. The formal process is often referred to as either CBA (Cost-Benefit Analysis) or BCA (Benefit-Cost Analysis).
Answer option A is incorrect. Business Continuity Planning (BCP) is the creation and validation of a practiced logistical plan that defines how an organization will recover and restore partially or completely interrupted critical (urgent) functions within a predetermined time after a disaster or extended disruption. The logistical plan is called a Business Continuity Plan.
Answer option C is incorrect. Disaster recovery is the process, policies, and procedures related to preparing for recovery or continuation of technology infrastructure critical to an organization after a natural or human-induced disaster. Disaster recovery planning is a subset of a larger process known as business continuity planning and should include planning for resumption of applications, data, hardware, communications (such as networking) and other IT infrastructure. A business continuity plan (BCP) includes planning for non-IT related aspects such as key personnel, facilities, crisis communication and reputation protection, and should refer to the disaster recovery plan (DRP) for IT related infrastructure recovery / continuity.
NEW QUESTION # 112
Which of the following Wireshark filters can a network administrator use to view the packets without any flags set in order to detect TCP Null Scan attempts?
- A. tcp.flags==0X029
- B. TCP.flags==0x000
- C. tcp.dstport==7
- D. tcp.flags==0x003
Answer: B
NEW QUESTION # 113
Which of the following refers to the exploitation of a valid computer session to gain unauthorized access to information or services in a computer system?
- A. Session hijacking
- B. Spoofing
- C. Phishing
- D. Smurf
Answer: A
Explanation:
Session hijacking refers to the exploitation of a valid computer session to gain unauthorized access to information or services in a computer system. In particular, it is used to refer to the theft of a magic cookie used to authenticate a user to a remote server. It has particular relevance to Web developers, as the HTTP cookies used to maintain a session on many Web sites can be easily stolen by an attacker using an intermediary computer or with access to the saved cookies on the victim's computer (see HTTP cookie theft).
TCP session hijacking is when a hacker takes over a TCP session between two machines. Since most authentication only occurs at the start of a TCP session, this allows the hacker to gain access to a machine.
Answer option A is incorrect. Spoofing is a technique that makes a transmission appear to have come from an authentic source by forging the IP address, email address, caller ID, etc. In IP spoofing, a hacker modifies packet headers by using someone else's IP address to hide his identity. However, spoofing cannot be used while surfing the Internet, chatting on-line, etc. because forging the source IP address causes the responses to be misdirected.
Answer option B is incorrect. Smurf is an attack that generates significant computer network traffic on a victim network. This is a type of denial-of-service attack that floods a target system via spoofed broadcast ping messages. In such attacks, a perpetrator sends a large amount of ICMP echo request (ping) traffic to IP broadcast addresses, all of which have a spoofed source IP address of the intended victim. If the routing device delivering traffic to those broadcast addresses delivers the IP broadcast to all hosts, most hosts on that IP network will take the ICMP echo request and reply to it with an echo reply, which multiplies the traffic by the number of hosts responding.
Answer option D is incorrect. Phishing is a type of scam that entices a user to disclose personal information such as social security number, bank account details, or credit card number. An example of phishing attack is a fraudulent e-mail that appears to come from a user's bank asking to change his online banking password.
When the user clicks the link available on the e-mail, it directs him to a phishing site which replicates the original bank site. The phishing site lures the user to provide his personal information.
NEW QUESTION # 114
John has planned to update all Linux workstations in his network. The organization is using various Linux distributions including Red hat, Fedora and Debian. Which of following commands will he use to update each respective Linux distribution?
- A. 1-iv,2-v,3-iv,4-iii
- B. 1-iii,2-iv,3-ii,4-v
- C. 1-v,2-iii,3-i,4-iv
- D. 1-ii, 2-i,3-iv,4-iii
Answer: D
NEW QUESTION # 115
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