Deck 5: Osi Model - Relationship to Networking

Question 1

The highest level in the OSI stack, whose function is to handle communications between the application process (AP) and the computer is the:

A) physical layer
B) data link layer
C) presentation layer
D) transport layer
E) session layer
F) application layer

Answer 1

application layer

Question 2

The OSI layer that ensures that the information is in a format that can be read by both ends is the:

A) physical layer
B) data link layer
C) presentation layer
D) transport layer
E) session layer
F)application layer

Answer 2

presentation layer

Question 3

The OSI layer that establishes and maintains the communications connection between the end-user's applications and also holds responsibility for terminating the session is the:

A) physical layer
B) data link layer
C) presentation layer
D) transport layer
E) session layer
F) application layer

Answer 3

session layer

Question 4

The ________ layer and the session layer are similar in that they are responsible for making sure information is accurate.

Question 5

The ________ layer determines the path that the information will travel.

Question 6

The OSI layer responsible for error detection, framing, error recovery, and flow control is the:

A) physical layer
B) data link layer
C) presentation layer
D) transport layer
E) session layer
F) application layer

Question 7

The voltage level, the pinouts of the wire interface, the formatting of the binary digits onto the line, the voltage level of each binary pulse, and the transmission characteristics of the line are all defined by the ________ layer of the OSI model.

Question 8

Data communication is as dependent upon the rules defined by the OSI model as it is upon the circuits used to connect the devices.

Question 9

The purpose of data networking protocols is to:

A) define the rules, methods, and standards used by the network
B) ensure that the information traveling on the network reaches its destination
C) determine what path the information should follow, the type of vehicle it should ride in, the number of stops it needs to make, the alternate routes available, and the time allowed for the trip
D) all of the above

Question 10

The protocols defining the pin outs of the connector, the gauge of cable, the number of twists per foot, the distance the signal travels, the voltage levels, and the frequency range, among other things, are the:

A) network layer protocols
B) data link layer protocols
C) physical layer protocols
D) all of the above

Question 11

The protocols that are responsible for routing frames through the network, error checking data, and working with the higher level protocols to ensure correct transmission of data are the:

A) network layer protocols
B) data link layer protocols
C) physical layer protocols
D) all of the above

Question 12

The data link layer that is the closest to the physical layer is the ________ layer.

Question 13

Numerous layer 2 transmission protocols:

A) are used to route data information from device to device
B) frame or format the information per standards
C) are usually defined as being either connection-oriented or connectionless
D) all of the above

Question 14

The lower layer protocols, such as the MAC and the physical layer, do not have to build specific interfaces to the higher layer protocols, such as layer 3, in order to communicate.

Question 15

The protocol that establishes a session end-to-end using a network address, such as a domain name like spidercom.com in an Internet connection is:

A) ATM
B) PPP
C) SDLC
D) HDLC

Question 16

Networking professionals use the 7 layer OSI stack to troubleshoot, design and plan communications networks.

Question 17

The layer 2 portion of the OSI structure is responsible for ________, ________, and ________.

A) defining pulse width, routing the information between devices, counting parity bits
B) presenting the information, establish sessions, monitoring for errors
C) none of the above

Question 18

The IP protocol is considered a ________ layer protocol.

Question 19

The transport layer protocol is responsible for defining the digital interface on an optical link.

Question 20

The 3 most common layer 2 protocols are:

A) SONET, Frame Relay, ATM
B) IP, IPX, AppleTalk
C) Frame Relay, ATM, Ethernet
D) Frame Relay, ATM, Ethernet.

Question 21

The most common layer 1 protocols are:

A) IP, Frame Relay, SONET
B) SONET, DS1, DS3
C) ATM, Ethernet
D) None of the above

Question 22

The two most common layer 4 protocols are ________ and ________.

Question 23

A packet traveling between two routers on a frame relay virtual circuit follows the OSI stack as follows:

A) Network layer to transport layer to data link layer to physical layer.
B) Transport layer to datalink layer to network layer.
C) Network layer to datalink layer to network layer to datalink layer to physical layer.
D) Transport layer to datalink layer to physical layer.
E) None of the above.

Question 24

When discussing networking layers the application layer refers to the software being used on the device

Question 25

The ASCII encoding scheme falls under the ________ layer of the OSI stack.

Question 26

Maintaining a session between devices is the responsibility of the datalink layer.