Question 1. 1. (TCO 1) The OSI _______ layer is the layer closest to the transmi

Question

Question 1.1. (TCO 1) The OSI _______ layer is the layer closest to the transmission medium. (Points : 1)       physical
      data link
      network
      transport

Question 2.2. (TCO 1) The OSI _______ layer lies between the network layer and the application layer. (Points : 1)       physical
      data link
      transport
      None of the above

Question 3.3. (TCO 1) The OSI ______ layer is responsible for moving frames from one hop to the next. (Points : 1)       physical
      data link
      transport
      None of the above

Question 4.4. (TCO 1) What differentiates a LAN from a WAN? (Points : 1)       A LAN is only used in one room.
      The equipment to support LAN connectivity is all generally owned by the local company.
      A LAN cannot support connections to the Internet.
      All of the above

Question 5.5. (TCO 1) The type of network you would build using existing phone-company-owned cables to connect various offices around Philadelphia city is:(Points : 1)       SAN
      LAN
      MAN
      WAN

Question 6.6. (TCO 1) Which of the following is the BEST reason for implementing a LAN? (Points : 1)       The office workers want Internet access.
      It is felt that office productivity could be increased by implementing a LAN.
      The office workers want access to the color laser printer (that is currently connected to a separate computer).
      The mobile work force needs remote access to their office computers.

Question 7.7. (TCO 1) When packets are transmitted from Node X to Node Y in a network, the header from X's OSI layer 4 is decapsulated by Y's OSI _______ layer. (Points : 1)       physical
      transport
      application
      None of the above

Question 8.8. (TCO 1) When packets are transmitted from Node X to Node Y in a network, the header from X's OSI layer 5 is decapsulated by Y's OSI _______ layer. (Points : 1)       session
      transport
      application
      None of the above

Question 9.9. (TCO 1) In the OSI model, as a data packet moves from the lower to the upper layers, headers are _______. (Points : 1)       encapsulated
      rearranged
      added
      removed

Question 10.10. (TCO 1) What advantage does a peer-to-peer network have over a server-based network? (Points : 1)       They have better support for resource sharing.
      They support more users.
      They are easier to implement.
      They provide better security for larger networks.

Question 11.11. (TCO 1) In a peer-to-peer network, which computer usually acts as the server? (Points : 1)       The one with the fastest processor
      The one with the most installed memory
      The one with the largest hard drive
      They all do

Question 12.12. (TCO 1) The reason for use of peer server on a peer-to-peer network is: (Points : 1)       It provides centralized access authentication.
      It is optimized for peer-to-peer use.
      It acts both as a server and a client.
      It cannot be used on other types of networks.

Question 13.13. (TCO 1) The following are all benefits of UTP over STP EXCEPT: (Points : 1)       More flexible
      Cheaper
      Easier to install
      None of the above - these are ALL benefits of UTP

Question 14.14. (TCO 1) What kind of transmission media has a central copper core, dielectric, shield, and protective jacket? (Points : 1)       Shielded Twisted Pair
      UTP
      Coaxial cable
      Fiber-optic cable

Question 15.15. (TCO 1) Fiber ADVANTAGES compared to copper include all EXCEPT: (Points : 1)       Cheaper to install/maintain
      Wider bandwidth
      Lower loss
      Immune to static interference

Question 16.16. (TCO 1) Fiber DISADVANTAGES compared to copper include all EXCEPT: (Points : 1)       Cannot support line power
      Lower tensile strength
      Greater losses through bending
      Crosstalk susceptibility

Question 17.17. (TCO 1) Power losses for fiber include all EXCEPT: (Points : 1)       Dispersion loss
      Absorption loss
      Radiation loss
      None of the above - they ALL contribute to loss in fiber Question 1.1. (TCO 1) The OSI _______ layer is the layer closest to the transmission medium. (Points : 1)       physical
      data link
      network
      transport

Question 2.2. (TCO 1) The OSI _______ layer lies between the network layer and the application layer. (Points : 1)       physical
      data link
      transport
      None of the above

Question 3.3. (TCO 1) The OSI ______ layer is responsible for moving frames from one hop to the next. (Points : 1)       physical
      data link
      transport
      None of the above

Question 4.4. (TCO 1) What differentiates a LAN from a WAN? (Points : 1)       A LAN is only used in one room.
      The equipment to support LAN connectivity is all generally owned by the local company.
      A LAN cannot support connections to the Internet.
      All of the above

Question 5.5. (TCO 1) The type of network you would build using existing phone-company-owned cables to connect various offices around Philadelphia city is:(Points : 1)       SAN
      LAN
      MAN
      WAN

Question 6.6. (TCO 1) Which of the following is the BEST reason for implementing a LAN? (Points : 1)       The office workers want Internet access.
      It is felt that office productivity could be increased by implementing a LAN.
      The office workers want access to the color laser printer (that is currently connected to a separate computer).
      The mobile work force needs remote access to their office computers.

Question 7.7. (TCO 1) When packets are transmitted from Node X to Node Y in a network, the header from X's OSI layer 4 is decapsulated by Y's OSI _______ layer. (Points : 1)       physical
      transport
      application
      None of the above

Question 8.8. (TCO 1) When packets are transmitted from Node X to Node Y in a network, the header from X's OSI layer 5 is decapsulated by Y's OSI _______ layer. (Points : 1)       session
      transport
      application
      None of the above

Question 9.9. (TCO 1) In the OSI model, as a data packet moves from the lower to the upper layers, headers are _______. (Points : 1)       encapsulated
      rearranged
      added
      removed

Question 10.10. (TCO 1) What advantage does a peer-to-peer network have over a server-based network? (Points : 1)       They have better support for resource sharing.
      They support more users.
      They are easier to implement.
      They provide better security for larger networks.

Question 11.11. (TCO 1) In a peer-to-peer network, which computer usually acts as the server? (Points : 1)       The one with the fastest processor
      The one with the most installed memory
      The one with the largest hard drive
      They all do

Question 12.12. (TCO 1) The reason for use of peer server on a peer-to-peer network is: (Points : 1)       It provides centralized access authentication.
      It is optimized for peer-to-peer use.
      It acts both as a server and a client.
      It cannot be used on other types of networks.

Question 13.13. (TCO 1) The following are all benefits of UTP over STP EXCEPT: (Points : 1)       More flexible
      Cheaper
      Easier to install
      None of the above - these are ALL benefits of UTP

Question 14.14. (TCO 1) What kind of transmission media has a central copper core, dielectric, shield, and protective jacket? (Points : 1)       Shielded Twisted Pair
      UTP
      Coaxial cable
      Fiber-optic cable

Question 15.15. (TCO 1) Fiber ADVANTAGES compared to copper include all EXCEPT: (Points : 1)       Cheaper to install/maintain
      Wider bandwidth
      Lower loss
      Immune to static interference

Question 16.16. (TCO 1) Fiber DISADVANTAGES compared to copper include all EXCEPT: (Points : 1)       Cannot support line power
      Lower tensile strength
      Greater losses through bending
      Crosstalk susceptibility

Question 17.17. (TCO 1) Power losses for fiber include all EXCEPT: (Points : 1)       Dispersion loss
      Absorption loss
      Radiation loss
      None of the above - they ALL contribute to loss in fiber

Explanation / Answer

Question 1.1.

Physical layer deals with all aspects of physically moving data from one computer to the next computer.

Hence, the correct option is physical

  

Question 2.2.

The seven Open Systems Interconnection (OSI) layers are:

The transport layer is lies between the network layer and the application layer.

Hence, the correct option is transport

Question 3.3.

Two sublayers:

Frame synchronization means moving frames from one hop to the next.

Hence, the correct option is data link

Question 4.4

A local Area Network(LAN) is a group of computers and network devices connected together, usually within the same building, campus or spanned over a limited distance.

Hence, the correct option is all of above

Question 5.5.

MAN(Metropolitan Area Network) refers to a network that connects systems or local area networks within a metropolitan area.

Hence, the correct option is MAN

Question 6.6.

A local Area Network (LAN) is a group of computers and network devices (like printers, fax, and other devices) connected together.

Hence, the correct option is The office workers want access to the color laser printer (that is currently connected to a separate computer).

Question 7.7.

In OSI model transport layer Takes data from higher levels of OSI Model and breaks it into segments that can be sent to lower-level layers for data transmission.

Hence, the correct option is transport

Question 8.8.

The session layer is responsible for managing the dialog between networked devices.

Hence, the correct option is session

Question 9.9.

In the OSI model,

As the data packet moves from the upper to the lower layers, headers are added.

As a data packet moves from the lower to the upper layers, headers are removed.

Hence, the correct option is removed

Question 10.10.

Peer- to-peer is a network with two or more pcs connected together and share resources without going through a separate server computer.

Hence, the correct option is They have better support for resource sharing.

Question 11.11.

The modern personal computer (PC) has a very fast processor, vast memory, and a large hard disk, the modern PC can easily act as both a client and server (a peer) for many types of applications.

Hence, the correct option is They all do

Question 12.12.

In the peer-to-peer network, each individual node in the network (called peers) acts as both suppliers and consumers of the resources.

Hence, the correct option is It acts both as a server and a client.

Question 13.13.

Due to the additional material used in a STP cable, it costs more than the UTP cable. The shielding makes the cable heavier and more difficult to bend. UTP cable typically is used in homes and offices. Some large businesses also use the cable because it is cheaper.

Hence, the correct option is None of the above - these are ALL benefits of UTP

Question 14.14.

Coaxial cable has an inner conductor surrounded by a tubular insulating layer, surrounded by a tubular conducting shield. Many coaxial cables also have an insulating outer sheath or jacket

Hence, the correct option is Coaxial cable

Question 15.15.

The cost for fiber cable, components, and hardware is steadily decreasing. Installation costs for fiber are higher than copper because of the skill needed for terminations.

Hence, the correct option is Cheaper to install/maintain

Question 16.16.

Flexibility - An optical fibre has greater tensile strength than copper.

Hence, the correct option is Lower tensile strength

Question 17.17

Fiber attenuation mechanisms:

1. Material absorption

2. Scattering loss

3. Bending loss

4. Radiation loss

5. Leaky modes

Hence, the correct option is None of the above - they ALL contribute to loss in fiber

Answers :

1. physical

2. transport

3. data link

4. all of above

5. MAN

6. The office workers want access to the color laser printer (that is currently connected to a separate computer).

7. transport

8. session

9. removed

10. They have better support for resource sharing.

11. They all do

12. It acts both as a server and a client.

13. None of the above - these are ALL benefits of UTP

14. Coaxial cable

15. Cheaper to install/maintain

16. Lower tensile strength

17.None of the above - they ALL contribute to loss in fiber

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