MCQs

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1. Which layer in the OSI model provides services directly to user applications?
   a. Presentation layer
   b. Session layer
   c. Application layer
   d. Transport layer
   Answer: c. Application layersanfoundry
2. Which model defines how the network functions of a computer should be organized?
   a. TCP/IP model
   b. ISO model
   c. OSI model
   d. ANSI model
   Answer: c. OSI modelexamradar
3. What is the main purpose of service models in networking?
   a. Specify security rules
   b. Define end-to-end data transport characteristics
   c. Describe hardware configuration
   d. Allocate physical resources
   Answer: b. Define end-to-end data transport characteristicsuff+1
4. In cloud computing, what does SaaS stand for?
   a. Software as a Service
   b. System as a Service
   c. Storage as a Service
   d. Security as a Service
   Answer: a. Software as a Servicesciencedirect+1
5. Which service model offers full control over the operating system and deployed applications but not the underlying hardware?
   a. SaaS
   b. PaaS
   c. IaaS
   d. FaaS
   Answer: c. IaaSuninets+1
6. What does PaaS allow users to control?
   a. The physical servers
   b. Underlying network
   c. Deployed applications and settings
   d. Virtual machine hypervisor
   Answer: c. Deployed applications and settingssciencedirect+1
7. Which OSI layer is responsible for routing packets between devices?
   a. Physical layer
   b. Network layer
   c. Session layer
   d. Application layer
   Answer: b. Network layersanfoundry+1
8. TCP/IP is an example of which type of reference model?
   a. Proprietary
   b. Layered
   c. Hardware-only
   d. Single-tier
   Answer: b. Layeredtutorialspoint+1
9. The customer service model in networking is primarily used for:
   a. Configuring hardware devices directly
   b. Presenting network services to customers
   c. Programming routers at the protocol level
   d. Managing local applications
   Answer: b. Presenting network services to customersdatatracker.ietf
10. Which cloud service model is most associated with developer tools and managed solution stacks?
    a. SaaS
    b. IaaS
    c. CaaS
    d. PaaS
    Answer: d. PaaSuninets+1
11. Which of the following is NOT a core cloud service model described by NIST?
    a. SaaS
    b. IaaS
    c. DaaS
    d. PaaS
    Answer: c. DaaSsciencedirect
12. In the TCP/IP model, which layer closely corresponds to the OSI application, presentation, and session layers combined?
    a. Network access
    b. Application
    c. Internet
    d. Transport
    Answer: b. Applicationsanfoundry+1
13. FaaS, or Function as a Service, is best described as:
    a. A networking hardware protocol
    b. An event-driven serverless computing model
    c. A virtual desktop solution
    d. On-premise server management
    Answer: b. An event-driven serverless computing modeluninets+1
14. Which model helps in abstraction and modularity in network protocols?
    a. Ring model
    b. Layered reference model
    c. Hardware model
    d. Dataflow model
    Answer: b. Layered reference modelgeeksforgeeks+1
15. In the OSI model, which layer is directly above the physical layer?
    a. Session layer
    b. Data link layer
    c. Network layer
    d. Transport layer
    Answer: b. Data link layergeeksforgeeks+1
16. What is the primary focus of a service delivery model in networking?
    a. Direct customer interfaces
    b. Engineering and managing service delivery
    c. Marketing network services
    d. Authoring documentation
    Answer: b. Engineering and managing service deliverydatatracker.ietf
17. Which layer provides reliable communication and data integrity in the OSI model?
    a. Presentation layer
    b. Transport layer
    c. Network layer
    d. Physical layer
    Answer: b. Transport layerscribd+1
18. A network service model defines:
    a. The brand of cables used in a network
    b. End-to-end data transport characteristics
    c. The speed of switches
    d. Device manufacturer standards
    Answer: b. End-to-end data transport characteristicsnetlab.ulusofona+1
19. Which service model relieves the customer from any infrastructure management, allowing access via web browsers?
    a. IaaS
    b. PaaS
    c. SaaS
    d. CaaS
    Answer: c. SaaSsciencedirect+1
20. The main characteristic of the OSI reference model is:
    a. It defines hardware protocols only
    b. It is a seven-layered framework
    c. It eliminates the need for IP addresses
    d. It is proprietary
    Answer: b. It is a seven-layered frameworkscribd+1
21. Which model uses YANG modules for standardized management and configuration?
    a. Customer service model
    b. Hardware abstraction model
    c. Data link model
    d. Gateway model
    Answer: a. Customer service modeldatatracker.ietf
22. In the TCP/IP model, which layer is responsible for host-to-host communication?
    a. Application
    b. Network access
    c. Transport
    d. Internet
    Answer: c. Transportinterviewbit+1
23. What is an example of a SaaS product?
    a. Amazon EC2
    b. Microsoft Office 365
    c. Kubernetes
    d. Docker Engine
    Answer: b. Microsoft Office 365uninets+1
24. Which service model provides virtual machines, networks, and storage resources on-demand?
    a. SaaS
    b. IaaS
    c. PaaS
    d. FaaS
    Answer: b. IaaSsciencedirect+1
25. The OSI model’s presentation layer primarily handles:
    a. Network addressing
    b. Data translation and encryption
    c. Hardware troubleshooting
    d. Data routing
    Answer: b. Data translation and encryptiontutorialspoint+1
26. Which of the following best describes PaaS?
    a. Direct application deployment with no customer-managed infrastructure
    b. On-premise server provisioning
    c. Physical device configuration
    d. Packet switching
    Answer: a. Direct application deployment with no customer-managed infrastructureuninets+1
27. The OSI model was developed primarily to:
    a. Increase data speed
    b. Standardize network communication
    c. Reduce network costs
    d. Enhance wireless technology
    Answer: b. Standardize network communicationexamradar
28. A key advantage of service models in SDN (Software Defined Networking) is:
    a. Centralized management and automation
    b. Increased hardware dependency
    c. Manual configuration only
    d. Restriction of network growth
    Answer: a. Centralized management and automationdatatracker.ietf
29. Which model describes how users interact with networking systems, independent of implementation details?
    a. Device model
    b. Service model
    c. Data model
    d. Control model
    Answer: b. Service modeluff+1
30. What does XaaS commonly refer to in cloud computing?
    a. External as a Service
    b. Everything as a Service
    c. Execution as a Service
    d. Exchange as a Service
    Answer: b. Everything as a Servicecalibraint+1
31. The OSI layer most responsible for flow control is:
    a. Physical layer
    b. Data link layer
    c. Network layer
    d. Session layer
    Answer: b. Data link layeruninets+1
32. Which model is directly responsible for determining packet routing across networks?
    a. Transmission model
    b. Network service model
    c. OSI data link layer model
    d. Control policy model
    Answer: b. Network service modelnetlab.ulusofona+1
33. What is a key difference between customer and service delivery models in networking?
    a. Only customer model uses hardware
    b. Service delivery focuses on technical configuration
    c. Customer model is used internally for routing decisions
    d. Service delivery is not used in SDN
    Answer: b. Service delivery focuses on technical configurationdatatracker.ietf
34. Microsoft Azure Functions is an example of:
    a. SaaS
    b. IaaS
    c. DaaS
    d. FaaS
    Answer: d. FaaSsciencedirect+1
35. The layer responsible for data segmentation and reassembly in OSI is:
    a. Presentation
    b. Application
    c. Transport
    d. Session
    Answer: c. Transportsanfoundry+1
36. In the OSI model, the session layer is mainly responsible for:
    a. Managing sessions between applications
    b. Data encryption only
    c. Routing packets
    d. Error detection
    Answer: a. Managing sessions between applicationsgeeksforgeeks+1
37. Which service model offers rapid elasticity and pay-as-you-go for computing functions only?
    a. SaaS
    b. FaaS
    c. BaaS
    d. IaaS
    Answer: b. FaaSuninets+1
38. Which OSI layer defines physical connections between nodes?
    a. Data link
    b. Physical
    c. Network
    d. Session
    Answer: b. Physicalexamradar+1
39. The TCP/IP model has how many layers?
    a. Two
    b. Five
    c. Four
    d. Seven
    Answer: c. Foursanfoundry+1
40. L3SM and L2SM are examples of which models explained in RFC 8309?
    a. Network hardware models
    b. Proprietary routers
    c. Customer service models
    d. Security models
    Answer: c. Customer service modelsdatatracker.ietf
41. Which service model would you use if you require full control of software and OS but not the hardware?
    a. SaaS
    b. FaaS
    c. IaaS
    d. PaaS
    Answer: c. IaaSsciencedirect+1
42. What primary feature distinguishes PaaS from IaaS?
    a. Only PaaS provides virtual networks
    b. PaaS manages operating systems and development tools
    c. IaaS does not offer storage
    d. IaaS is only for small businesses
    Answer: b. PaaS manages operating systems and development toolsuninets+1
43. What is an advantage of a layered model in network protocol design?
    a. Increases complexity
    b. Allows modular engineering and troubleshooting
    c. Avoids protocol usage
    d. Reduces abstraction
    Answer: b. Allows modular engineering and troubleshootingtutorialspoint+1
44. In FaaS, resource charges are typically based on:
    a. Number of virtual machines
    b. Function execution time
    c. Storage size
    d. Operating system type
    Answer: b. Function execution timesciencedirect+1
45. Which protocol is most directly associated with the transport layer in the OSI model?
    a. IP
    b. Ethernet
    c. TCP
    d. HTTP
    Answer: c. TCPsanfoundry+1
46. What is the purpose of RFC 8309?
    a. Defines IP addressing formats
    b. Explains service models and their roles in network automation
    c. Specifies data link protocols
    d. Describes wireless LAN standards
    Answer: b. Explains service models and their roles in network automationdatatracker.ietf
47. The application layer in the TCP/IP model is equivalent to which layers in OSI?
    a. Session, presentation, application
    b. Data link and network
    c. Physical and data link
    d. Transport and network
    Answer: a. Session, presentation, applicationexamradar+1
48. Which service model enables users to run code in response to events without managing servers?
    a. SaaS
    b. PaaS
    c. FaaS
    d. IaaS
    Answer: c. FaaSuninets+1
49. What does modularity in a service model enable?
    a. Hardware upgrades only
    b. Reusable building blocks for multiple services
    c. Enhanced cable types
    d. Unlimited bandwidth
    Answer: b. Reusable building blocks for multiple servicesdatatracker.ietf
50. Which OSI layer is responsible for providing logical addressing?
    a. Network
    b. Physical
    c. Data link
    d. Application
    Answer: a. Networksanfoundry+1

1. https://www.sanfoundry.com/computer-networks-questions-answers-reference-models/
2. https://examradar.com/data-communication-networking-network-model-mcq-set-behrouz-forouzan/
3. http://www2.ic.uff.br/~michael/kr1999/4-network/4_01-service.htm
4. https://netlab.ulusofona.pt/rc/book/4-network/4_01/index.htm
5. https://www.sciencedirect.com/topics/computer-science/service-model
6. https://www.uninets.com/blog/cloud-models-services
7. https://www.tutorialspoint.com/data_communication_computer_network/computer_network_models.htm
8. https://datatracker.ietf.org/doc/html/rfc8309
9. https://www.sanfoundry.com/computer-network-questions-answers/
10. https://www.scribd.com/doc/93665567/57-Multiple-Choice-Questions-Mcqs-on-Network-Models-Set-1
11. https://www.geeksforgeeks.org/computer-networks/computer-network-models/
12. https://www.interviewbit.com/computer-network-mcq/
13. https://www.calibraint.com/blog/cloud-service-models
14. https://www.uninets.com/blog/computer-networks-mcq
15. https://www.geeksforgeeks.org/dbms/types-of-network-services/
16. https://reck.ac.in/wp-content/uploads/2023/04/DCN_MCQ-Ashwini-.pdf
17. https://nilesecure.com/network-as-a-service/network-services
18. https://www.gdcramban.in/MCQ/networkmcq.pdf
19. https://www.youtube.com/watch?v=xEkIUH95Z3s
20. https://www.ccbp.in/blog/articles/computer-network-mcq