Cloud Computing | Week 6
Session: JULY-DEC 2023
Course Name: Cloud Computing
Course Link: Click Here
These are Nptel Cloud Computing week 6 Assignment 6 Answers
Q1. Fabrication is an attack on :
A) Integrity
B) Confidentiality
C) Authenticity
D) Availability
Answer: C) Authenticity
Q2. Reliability and efficiency are basic components of security.
A) True
B) False
Answer: B) False
Q3. Spoofing threat on cloud security is an example of.
A) Deception
B) Disruption
C) Usurpation
D) Disclosure
Answer: A, C
These are Nptel Cloud Computing week 6 Assignment 6 Answers
Q4. Statement I : Intrusion Detection System (IDS) scans the incoming messages, and creates alerts when suspected scans/attacks are in progress.
Statement II : Authentication is the determination of whether or not an operation is allowed by a certain user.
A) Statement I is TRUE and Statement II is FALSE.
B) Statement II is TRUE and Statement I is FALSE.
C) Both statements are TRUE.
D) Both statements are FALSE.
Answer: A) Statement I is TRUE and Statement II is FALSE.
Q5. Which of the following is/are hypervisor risks associated with rough hypervisor root kits?
A) Improper configuration of VM.
B) Hypervisor that hides itself from normal malware detection systems.
C) Hypervisor that creates a covert channel to dump unauthorized code.
D) Vulnerable virtual machine applications like Vmchat. VMftp. Vmcat etc.
Answer: B, C
Q6. In fault tolerance, replication is mirroring/sharing data over disks which are located in separate physical locations to maintain consistency.
A) True
B) False
Answer: A) True
These are Nptel Cloud Computing week 6 Assignment 6 Answers
Q7. In which of the following web service(s) based security attacks does(do) the attacker send huge amounts of requests to a certain service, causing denial of service?
A) Injection attack
B) Flooding
C) Cross-site scripting (XSS)
D) Metadata (WSDL) spoofing attack
Answer: B) Flooding
Q8. When is it better to switch cloud providers?
A) Contract price decrease
B) Provider bankruptcy
C) Provider service shutdown
D) Increase in service quality
Answer: A, B, C
Q9. Which of the following Open-source tools is/are used to perform TCP SYN trace routes on the Amazon EC2 platform?
A) wget
B) nmap
C) ipconfig
D) hping
Answer: D) hping
These are Nptel Cloud Computing week 6 Assignment 6 Answers
Q10. In risk-based access control (RAC), computing security uncertainty is addressed.
A) True
B) False
Answer: B) False
These are Nptel Cloud Computing week 6 Assignment 6 Answers
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Session: JAN-APR 2023
Course Name: Cloud Computing
Course Link: Click Here
These are Nptel Cloud Computing week 6 Assignment 6 Answers
Q1. Interception is an attack on:
A. Integrity
B. Availability
C. Confidentiality
D. Authenticity
Answer: C. Confidentiality
Q2. Which of the following is/are the recovery goal(s) of the security mechanism?
A. Stop attack, assess and repair damage
B. Detect attackers’ violation of security policy
C. Prevent attackers from violating security policy
D. Continue to function correctly even if attack succeeds
Answer: A, D
These are Nptel Cloud Computing week 6 Assignment 6 Answers
Q3. Replay attack, which is the passive capture of a data unit and its subsequent retransmission to produce an unauthorized effect, is an active attack.
A. True
B. False
Answer: A. True
Q4. Statement I: Authorization is the identification of legitimate users.
Statement II: Integrity is the protection against data alteration/corruption.
A. Statement I is TRUE and statement II is FALSE.
B. Statement I is FALSE and statement II is TRUE.
C. Both statements are TRUE.
D. Both statements are FALSE.
Answer: B. Statement I is FALSE and statement II is TRUE.
These are Nptel Cloud Computing week 6 Assignment 6 Answers
Q5. Which of the following is/are NOT passive attacks?
A. Masquerade
B. Release of message contents
C. Denial of service
D. Modification
Answer: A, C, D
Q6. In full virtualization, VMs interact with the host OS.
A. True
B. False
Answer: B. False
These are Nptel Cloud Computing week 6 Assignment 6 Answers
Q7. When selecting the most suitable cloud provider satisfying customer’s QoS requirements using a
fuzzy inference engine, if the “Degree of SLA Satisfaction” is greater than the “Threshold for a
cloud service provider”, the customer should migrate to a different provider.
A. True
B. False
Answer: B. False
Q8. Which of the following Open-source tools is/are used to perform TCP connect probes in Amazon EC2 platform?
A. wget
B. nmap
C. ifconfig
D. hping
Answer: B. nmap
These are Nptel Cloud Computing week 6 Assignment 6 Answers
Q9. Statement I: Recovery Point Objective (RPO) is the maximum amount of data that will be lost
following an interruption or disaster.
Statement II: Recovery Time Objective (RTO) is the amount of data that will be lost following an
interruption or disaster.
A. Statement | is TRUE and statement Il is FALSE.
B. Statement | is FALSE and statement Il is TRUE.
C. Both statements are TRUE.
D. Both statements are FALSE.
Answer: A. Statement | is TRUE and statement Il is FALSE.
Q10. List the motivation(s) in having a ‘middle man’ or intelligent broker for cloud marketplace:
A. Trustworthiness of the provider.
B. Monitoring of services.
C. Ensuring vendor lock-in.
D. Flexible selection of cloud provider.
Answer: A, B, D
These are Nptel Cloud Computing week 6 Assignment 6 Answers
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Session: JULY-DEC 2022
Course name: Cloud Computing NPTEL
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These are Nptel Cloud Computing week 6 Assignment 6 Answers
Q1. Modification threat on cloud security is an example of
A. Deception
B. Disclosure
C. Disruption
D. Usurpation
Answer: a, c, d
Q2. Which of the following is/are example(s) of passive attack?
A. Replay
B. Denial of service
C. Traffic analysis
D. Masquerade
Answer: c
Q3. Interception is an attack on integrity
A. TRUE
B. FALSE
Answer: b
These are Nptel Cloud Computing week 6 Assignment 6 Answers
Q4. Statement I: Intrusion Detection System (IDS) Scans the incoming messages, and creates alerts when suspected scans/attacks are in progress.
Statement ll: Authentication is the identification of legitimate users
A. Statement I is TRUE and statement II is FALSE
B. Statement l is FALSE and statement Il is TRUE.
C. Both statements are TRUE.
D. Both statements are FALSE.
Answer: c
Q5.
Answer: b
Q6. Recovery lime Objective (RIO) represents the period of time allowed for the complete execution pf the task.
A. TRUE
B. FALSE
Answer: b
Q7. The correct statement(s) for necessary and sufficient conditions for the detectionof inheritance conflict is/are:
A. Sufficient condition: current entry role and at least one exit role forms conflicting pair
B. Sufficient condition: current entry role is senior to at least one exit role
C. Necessary condition: current entry role is senior to at least one exit role
D. Necessary condition: at least one exit role
Answer: a, d
These are Nptel Cloud Computing week 6 Assignment 6 Answers
Q8. Which of the following is/are hypervisor risks assOCiated With VM escape?
A. Vulnerable virtual machine applications like Vmchat, VMíftp, Vmcat etc.
B. Rogue hypervisor that hides itself from normal malware detection systems
C. Improper configuration of VM
D. Rogue hypervisor that creates a covert channel to dump unauthorized code
Answer: a, c
Q9. In fault tolerance, replication is the duplication of critical components of a system with the intention of increasing relability of the system, usually in the case of a backup or fail-sate.
A. TRUE
B. FALSE
Answer: b
These are Nptel Cloud Computing week 6 Assignment 6 Answers
Q10. Which of the folloWing Open-source tools is/are used for retrieving web pages in Amazon EC2 platform?
A. Wget
B. hping
C. ifconfig
D. nmap
Answer: a
These are Nptel Cloud Computing week 6 Assignment 6 Answers
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