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Chapter 1
Internetworking
Written Labs
I
n this section, you'll complete the following labs to make sure you've
got the information and concepts contained within them fully dialed in:
Lab 1.1: OSI Questions
Lab 1.2: Defining the OSI Layers and Devices
Lab 1.3: Identifying Collision and Broadcast Domains
Written Lab 1.1: OSI Questions
Answer the following questions about the OSI model:
1.
Which layer chooses and determines the availability of communicat-
ing partners, along with the resources necessary to make the connec-
tion; coordinates partnering applications; and forms a consensus on
procedures for controlling data integrity and error recovery?
2.
Which layer is responsible for converting data packets from the Data
Link layer into electrical signals?
3.
At which layer is routing implemented, enabling connections and path
selection between two end systems?
4.
Which layer defines how data is formatted, presented, encoded, and
converted for use on the network?
5.
Which layer is responsible for creating, managing, and terminating
sessions between applications?
6.
Which layer ensures the trustworthy transmission of data across a
physical link and is primarily concerned with physical addressing, line
discipline, network topology, error notification, ordered delivery of
frames, and flow control?
7.
Which layer is used for reliable communication between end nodes
over the network and provides mechanisms for establishing, maintain-
ing, and terminating virtual circuits; transport-fault detection and
recovery; and controlling the flow of information?
8.
Which layer provides logical addressing that routers will use for path
determination?
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