Networking And Distributed Systems Quiz: Test!

24 Questions | Total Attempts: 10186

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Networking And Distributed Systems Quiz: Test!

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Questions and Answers
  • 1. 
    What is an Autonomous system/ computing?
    • A. 

      A network that is administered by a single set of management rules that are controlled by one person, group or organization. Autonomous systems often use only one routing protocol, although multiple protocols can be used. The core of the Internet is made up of many autonomous systems.

    • B. 

      Autonomic Computing refers to the self-managing characteristics of distributed computing resources, adapting to unpredictable changes whilst hiding intrinsic complexity to operators and users.

    • C. 

      Referring to a group of routers within the same administrative domain. The term is used in exterior protocols such as the Exterior Gateway Protocol (EGP) and the Border Gateway Protocol (BGP)

    • D. 

      ALL are acceptable answers

  • 2. 
    Networks can be classified into three different geographical scopes. i.            LAN – Land Area Network ii.            LAN – Local Area Network iii.            MAN – Mass Area Network iv.            MAN – Metropolitan Area Netw v.            WAN – Wide Area Network vi.            WAN – World Area Network    
    • A. 

      I, iii, v

    • B. 

      I, iv, v

    • C. 

      I, iv, vi

    • D. 

      Ii, iii, v

    • E. 

      Ii, iv, v

    • F. 

      Ii, iv, vi

  • 3. 
    For the LAN network, the distance between the system can go up to:
    • A. 

      10 m

    • B. 

      100 m

    • C. 

      1 km

    • D. 

      ALL are acceptable answers

  • 4. 
    For the MAN network, the distance between the system can go up to:
    • A. 

      10 km

    • B. 

      100 km

    • C. 

      500 km

    • D. 

      ALL are acceptable answers

  • 5. 
     Reorganise the steps below to show the flow of a simple high-level model of a network                                  i.            The network receives the message and then transfers it to the receiver.                                 ii.            The sender generates a message and puts it into the network.                               iii.            The receiver takes the message out and gives it to its application program.              
    • A. 

      I, ii, iii

    • B. 

      I, iii, ii

    • C. 

      Ii, i, iii

    • D. 

      Ii, iii, i

  • 6. 
    Structurally, a network includes a set of nodes interconnected by a set of transmission lines, and each connection is called a ________________.  
    • A. 

      Servers

    • B. 

      Client

    • C. 

      Link

    • D. 

      Host

  • 7. 
    The application layer is the highest layer which provides simple application services for end-users on top of TCP EXCEPT:
    • A. 

      FTP (File Transfer Protocol)

    • B. 

      HTTP (Hypertext Transfer Protocol)

    • C. 

      LACP (Link Aggregation Control Protocol)

    • D. 

      SMTP (Simple Mail Transfer Protocol)

  • 8. 
    A distributed system is defined as a collection of autonomous computers linked by a network with software designed to produce an integrated computing facility.
    • A. 

      True

    • B. 

      False

  • 9. 
    The key difference between the two systems is, in a distributed system, the existence of multiple autonomous computers is transparent to the users or appears to the users as a single computer.
    • A. 

      True

    • B. 

      False

  • 10. 
    • A. 

      True

    • B. 

      False

  • 11. 
    The characteristics of a distributed system are:
    • A. 

      Resource sharing, heterogeneity, openness, security

    • B. 

      Scalability, fault handling

    • C. 

      Concurrency, transparency

    • D. 

      ALL are acceptable answers

  • 12. 
    There are four requirements in the design of a distributed system. Choose the correct combination from the list below.
    • A. 

      Network integrity; Quality of Software (QoS); Caching and alteration; Dependability issues

    • B. 

      Network dependency; Quantity of Service (QoS); Cookies and replication; Dependability issues.

    • C. 

      Network performance; Quality of Service (QoS); Caching and replication; Dependability issues.

    • D. 

      Network Accessibility; Quality of hardware (QoH); Caching and replication; Dependability issues.

  • 13. 
    The TCP/IP reference model has 4 layers. Choose the correct layers.
    • A. 

      Host-to-network layer; network or IP (Internet Protocol) layer; transport or TCP (Transmission Control Protocol) layer; application layer

    • B. 

      Host-to-host layer; network or IP (Intranet Protocol) layer; transport or TCP (Transmission Control Protocol) layer; application layer

    • C. 

      Network-to-network layer; network or IP (Internet Protocol) layer; transport or TCP (Transmission Control Protocol) layer; application layer

    • D. 

      Network-to-host layer; FTP (File Transfer Protocol) layer; transport or TCP (Transmission Control Protocol) layer; application layer

  • 14. 
    “Some applications involve spatially separated machines. For example, a supermarket chain may have many stores. Management needs to keep track of inventory at each store and update this kind of information at headquarters. To implement this application, a commercial distributed system is a natural choice.” Which of the category below best describe the above advantage?  
    • A. 

      Economy

    • B. 

      Inherent distribution

    • C. 

      Incremental growth

    • D. 

      Software complexity

    • E. 

      ALL are acceptable answers

  • 15. 
    These are examples of a Distributed System EXCEPT:                                                          i.            CyberCafe                                                         ii.            Intranet                                                       iii.            Computer Lab                                                       iv.            Mobile System  
    • A. 

      I, ii

    • B. 

      Ii, iii

    • C. 

      Iii, iv

    • D. 

      I, iii

    • E. 

      Ii, iv

  • 16. 
    These are the character characteristics of a decentralised algorithms:
    1. No machine has complete information about the system state.
    2. Machines make decisions based only on local information.
    3. Failure of one machine does not damage the algorithm.
    4. There is no implicit assumption that a global clock exist
    • A. 

      True

    • B. 

      False

  • 17. 
    In LAN, waiting time is only few hundred seconds. But in Wide Area Network (WAN), the waiting time may be hundreds of microseconds.
    • A. 

      True

    • B. 

      False

  • 18. 
    Scalability basically refers to the size of the network that is to be used and it consists for various sizes. Thus this may create some problems in the network. To solve the scalability problem, there are basically three techniques for scaling which is hiding communication latencies, distribution, and replication.
    • A. 

      True

    • B. 

      False

  • 19. 
    Circuit switching is when a message or data is broken into packets and are routed independently. It also has better network utilization. Meanwhile packet switching is a dedicated path between a source and a destination e.g., telephone connection. It wastes bandwidth. 
    • A. 

      True

    • B. 

      False

  • 20. 
    Distribution involves taking a component, splitting it into smaller parts, and subsequently spreading those parts across the system. A good example of distribution is the Internet Domain Name System (DNS).
    • A. 

      True

    • B. 

      False

  • 21. 
    The implementation of caching and replication DOES NOT lead to consistency problems.
    • A. 

      True

    • B. 

      False

  • 22. 
    Concurrency is one of the intrinsic characteristics of distributed systems. There are two reasons for parallel executions to occur:   1. Many users concurrently invoke commands or interact with (the same) application programs.   2. Many server processes run concurrently, each corresponding to multiple request from a client process.
    • A. 

      True

    • B. 

      False

  • 23. 
    Peer processes model is a distributed application based on peer processes. Sometimes, some processes play similar roles, interacting cooperatively as peers to perform a task. This model is usually used because of the nature of the application, e.g., group communication.
    • A. 

      True

    • B. 

      False

  • 24. 
    To classify the distributed system, the following classification models are based on the fundamental properties of systems. Interaction model. In these kinds of distributed system, processes interact by passing messages that result in communication and coordination among processes. This is the most common model. Examples are the client-server and group communication models. System model. A is the conceptual model that describes and represents a system. A system comprises multiple views such as planning, requirement, deisng, implementation, deployment, structure, nehabior, input data and output data views. A system model is required to describe and represent all these multiple views. Failure model. Since processes and communication networks might fail in a distributed system, this model define how the system should recover when the above failure occurs. Security model. Since resources are shared within a distributed system, this model defines how to protect those resources from being accessed by unauthorised users, and it provides a secure way for authorised users to access the shared resources. Network management model.The ISO under the direction of the OSI group has created a network management model as the primary means for understanding the major functions of network management systems. The model in question is interchangeably called either the OSI network management model or ISO network management model so the full name could be the OSI/ISO network management model.
    • A. 

      True

    • B. 

      False