Exploration 1-Module 2 answers

CCNA Exploration 4.0: Network Fundamentals - Chapter 2 Exam Answers
1Which two layers of the OSI model have the same functions as the TCP/IP model Network Access Layer? (Choose two.)NetworkTransport* Physical* Data LinkSession
2What is a primary function of the trailer information added by the data link layer encapsulation?* supports error detectionensures ordered arrival of dataprovides delivery to correct destinationidentifies the devices on the local networkassists intermediary devices with processing and path selection
3During the encapsulation process, what occurs at the data link layer?No address is added.The logical address is added.* The physical address is added.The process port number is added.
4What device is considered an intermediary device?file serverIP phonelaptopprinter* switch
5Which layer encapsulates the segment into packets?physical* data linknetworktransport
6Which statements correctly identify the role of intermediary devices in the network? (Choose three.)* determine pathways for datainitiate data communications* retime and retransmit data signalsoriginate the flow of data* manage data flowsfinal termination point for data flow
7What can be identified by examining the network layer header?the destination device on the local media* the path to use to reach the destination hostthe bits that will be transferred over the mediathe source application or process creating the data
8What is the proper order of the layers of the OSI model from the highest layer to the lowest layer?physical, network, application, data link, presentation, session, transportapplication, physical, session, transport, network, data link, presentationapplication, presentation, physical, session, data link, transport, network* application, presentation, session, transport, network, data link, physicalpresentation, data link, session, transport, network, physical, application
9Refer to the exhibit. Which three labels correctly identify the network types for the network segments that are shown? (Choose three.)Network A -- WAN* Network B -- WAN* Network C -- LANNetwork B -- MANNetwork C -- WAN* Network A -- LAN
10What are the key functions of encapsulation? (Choose three.)allows modification of the original data before transmission* identifies pieces of data as part of the same communicationenables consistent network paths for communication* ensures that data pieces can be directed to the correct receiving end device* enables the reassembly of complete messagestracks delay between end devices
11Refer to the exhibit. Which networking term describes the data interleaving process represented in the graphic?pipingPDUstreamingmultiplexing* encapsulation
12What is a PDU?corruption of a frame during transmissiondata reassembled at the destinationretransmitted packets due to lost communication* a layer specific encapsulation
13Refer to the exhibit. "Cell A" at IP address 10.0.0.34 has established an IP session with "IP Phone 1" at IP address 172.16.1.103. Based upon the graphic, which device type best describes the function of wireless device "Cell A?"the destination device* an end devicean intermediate devicea media device
14Refer to the exhibit. Which set of devices contains only end devices?A, C, DB, E, G, HC, D, G, H, I, JD, E, F, H, I, J* E, F, H, I, J
15Refer to the exhibit. Which term correctly identifies the device type that is included in the green area?sourceendtransfer* intermediary
16Which three statements best describe a Local Area Network (LAN)? (Choose three.)* A LAN is usually in a single geographical area.* The network is administered by a single organization.The connection between segments in the LAN is usually through a leased connection.The security and access control of the network are controlled by a service provider.* A LAN provides network services and access to applications for users within a common organization.Each end of the network is generally connected to a Telecommunication Service Provider (TSP).
17Refer to the exhibit. What type of network is shown?WANMAN* LANWLAN
18What is the purpose of the TCP/IP Network Access layer?path determination and packet switching* data representation, encoding, and controlreliability, flow control, and error detectiondetailing the components that make up the physical link and how to access itthe division of segments into packets
19Which characteristic correctly refers to end devices in a network?manage data flowsoriginate data flow* retime and retransmit data signalsdetermine pathways for data
20What is the primary purpose of Layer 4 port assignment?to identify devices on the local mediato identify the hops between source and destinationto identify to the intermediary devices the best path through the networkto identify the source and destination end devices that are communicating* to identify the processes or services that are communicating within the end devices
21Select the statements that are correct concerning network protocols. (Choose three.)* define the structure of layer specific PDU'sdictate how to accomplish layer functions* outline the functions necessary for communications between layerslimit hardware compatibility* require layer dependent encapsulationseliminate standardization among vendors