Microsoft Networking Essentials 1
Network + Certification
- 1.
- A.
True
- B.
False
- 2.What type of network connects local area networks (LANs) in distant locations?
- A.
WAN
- B.
LAN
- C.
MAN
- D.
CAN
- 3.Which of the following best describes the function of the network medium?
- A.
It provides the physical connection between networked computers.
- B.
It provides the protocol used to transmit data between end systems.
- C.
It passes data between two routers.
- D.
It processes electrical or light signals and converts them to data.
- 4.Use your understanding of the Open Systems Interconnection (OSI) model and of protocol layers and their functions to answer the following question. Assume that you have a small internetwork consisting of three separate network segments. One of these segments is an Ethernet segment, and the other two are Token Ring segments. Identify the layer of the OSI model and the device that are concerned with connecting these segments and passing information from the Token Ring segment to the Ethernet segment, and identify the function that this layer might need to perform before transmitting across different networks.
- A.
Transport layer; Internet Protocol (IP) addressing and acknowledgments
- B.
Application layer; hub and Media Access Control (MAC) addressing
- C.
Data-link layer; hub and Media Access Control (MAC) addressing
- D.
Session layer; router and Internet Protocol (IP) addressing
- E.
Network layer; router and fragmentation
- 5.What layer of the Open Systems Interconnection (OSI) model is responsible for the translation and formatting of information?
- A.
Physical
- B.
Network
- C.
Transport
- D.
Session
- E.
Presentation
- 6.You are a network administrator for a company that is planning to open a small branch office in Idaho. The company has engaged a consultant to design the local area network (LAN) for the new office, and your supervisor has asked you to review the design submitted by the consultant. The documentation for the new network calls for the installation of 20 Ethernet workstations, all of which will be connected to a single Ethernet LAN. The consultant states in the document that “a broadband network is necessary, to enable all of the workstations to coexist on the same packet switching network,” and then calls for the installation of coaxial cable, “a broadband medium that is more than capable of supporting the communications of 20 workstations, as demonstrated in any home with cable television.” After reading the document, you immediately call your supervisor and recommend that the company find a new consultant. Which of the following are valid reasons for this conclusion?
- A.
Ethernet does not run on coaxial cable.
- B.
A broadband medium is not necessary to support multiple workstations on a packet switching network.
- C.
Cable television networks do not use broadband signaling.
- D.
Coaxial cable does not support broadband signaling.
- 7.What layer of the Open Systems Interconnection (OSI) model is responsible for dialog control between two communicating end systems?
- A.
Physical
- B.
Data-link
- C.
Transport
- D.
Session
- E.
Application
- 8.Identify the layer of the Open Systems Interconnection (OSI) model that controls the transmission, reception, and addressing of frames. Also identify the channel access method that Ethernet uses.
- A.
Physical layer; Carrier Sense Multiple Access with Collision Detection (CSMA/CD)
- B.
Data-link layer; token passing
- C.
Physical layer; token passing
- D.
Data-link layer; Carrier Sense Multiple Access with Collision Detection (CSMA/CD)
- 9.The transmission of a return message by the recipient to verify the receipt of a packet or packets.
- A.
Segmentation
- B.
Packet acknowledgment
- C.
Error correction
- D.
Flow control
- E.
Error detection
- 10.The division of lengthy data streams into segments sufficiently small enough for transmission over the network.
- A.
Segmentation
- B.
Packet acknowledgment
- C.
Error correction
- D.
Flow control
- E.
Error detection
- 11.The generation, by a receiving system, of messages that instruct the sending system to speed up or slow down its transmission.
- A.
Segmentation
- B.
Packet acknowledgment
- C.
Error correction
- D.
Flow control
- E.
Error detection
- 12.The inclusion in a packet of special codes used by the receiving system to verify that the content of the packet wasn’t damaged in transit.
- A.
Segmentation
- B.
Packet acknowledgment
- C.
Error correction
- D.
Flow control
- E.
Error detection
- 13.The retransmission of packets that have been garbled or lost in transit.
- A.
Segmentation
- B.
Packet acknowledgment
- C.
Error correction
- D.
Flow control
- E.
Error detection
- 14.You are a software developer. You have the task of creating an application that provides guaranteed delivery of information between end system applications. What layer of the Open Systems Interconnection (OSI) model and what type of protocol must you implement?
- A.
Data-link layer; connectionless
- B.
Network layer; connection-oriented
- C.
Transport layer; connection-oriented
- D.
Application layer; connection-oriented
- 15.What layer of the Open Systems Interconnection (OSI) model provides an entrance point to the protocol stack for applications?
- A.
Data-link
- B.
Network
- C.
Session
- D.
Presentation
- E.
Application
- 16.What layer of the Open Systems Interconnection (OSI) model is responsible for the logical addressing of end systems and the routing of datagrams on a network?
- A.
Physical
- B.
Data-link
- C.
Network
- D.
Transport
- E.
Application
- 17.What type of signal is typically used over copper cable?
- A.
Fiber-optic
- B.
Microwave
- C.
Infrared
- D.
Electrical
- 18.What type of network is typically confined to a small geographic area, such as a single room, floor, or building?
- A.
WAN
- B.
LAN
- C.
MAN
- D.
CAN
- 19.You have been hired to design a small network for a private company. The network has 10 users who all need to share data and resources. The network you choose should support baseband signaling and a star topology and should use a collision-free Media Access Control (MAC) method. Based on this information, identify the appropriate data-link layer protocol and the channel access method that should be used by this protocol.
- A.
Fiber-optic
- B.
Token Ring
- C.
Ethernet
- D.
Internet Protocol (IP)
- 20.
- A.
Protocols perform data encapsulation when they add specific codes within the datagram that are used for error checking.
- B.
Protocols perform data encapsulation when they embed protocol identification information within the datagram.
- C.
Protocols within the stack perform data encapsulation by adding a header—and, in some cases, a footer—to the information received from an upper-layer protocol.
- D.
Data encapsulation is the process of including only the user data in a packet.
- 21.Which layer of the Open Systems Interconnection (OSI) model adds both a header and footer (creating a frame) to the information that is passed down from an upper layer?
- A.
Physical
- B.
Data-link
- C.
Network
- D.
Transport
- E.
Session
- 22.Which of the following organizations is responsible for developing the 802 series of standards for data-link layer and physical layer protocols?
- A.
Telecommunication Standardization Sector of the International Telecommunication Union (ITU-T)
- B.
Comité Consultatif International Télégraphique et Téléphonique (CCITT)
- C.
American National Standards Institute (ANSI)
- D.
Institute of Electrical and Electronics Engineers (IEEE)
- E.
International Organization for Standardization (ISO)
- 23.
- A.
Physical
- B.
Data-link
- C.
Network
- D.
Transport
- E.
Session
- 24.What layer of the Open Systems Interconnection (OSI) model defines the medium, network interfaces, connecting hardware, and signaling methods used on a network?
- A.
Physical
- B.
Data-link
- C.
Network
- D.
Transport
- E.
Session
- 25.
![Which type of network typically uses point-to-point links to connect networks, as shown in the following illustration? - ProProfs]( "Which type of network typically uses point-to-point links to connect networks, as shown in the following illustration?")
Which type of network typically uses point-to-point links to connect networks, as shown in the following illustration?- A.
WAN
- B.
LAN
- C.
VAN
- D.
CAN
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