Deck 7: Network Reference Models and Standards

Question 1

One of the problems that can occur in the Network layer is the incorrect configuration of a host's IP address.

Answer 1

True

Question 2

What does the Transport layer use to make sure that a message is reassembled correctly on the receiving device?

A) source port number
B) window Size
C) destination port number
D) sequence number

Answer 2

D

Question 3

The maximum transmission unit for Ethernet is 1518 bytes.

Answer 3

True

Question 4

One job that a router performs is that of gatekeeper, which means that it can be configured to only allow certain packets access into the network based on a list of rules. What is that process called?

A) media control
B) packet forwarding
C) access control
D) signal bounce

Question 5

The Network layer communicates with the Data Link layer and the Session layer.

Question 6

What information would you find in the header of a Transport layer PDU?

A) destination IP address
B) cyclic redundancy check
C) source MAC address
D) window size

Question 7

You are working at the help desk and you get a message that a user cannot access the Internet. You open a command prompt, ping the workstation's IP address, and get a response. You ask the user to try the Internet again. He does so with the same result-no connection. Which type of device is most likely to be the problem?

A) Physical layer device
B) Data Link layer device
C) Network layer device
D) Presentation layer device

Question 8

At each layer of the OSI model, data is appended to the original message and then sent on to the next lower layer. What is this process called?

A) encapsulation
B) deencapsulation
C) packetization
D) checkpointing

Question 9

Which layer is responsible for establishing communication setup between the source and destination computers?

A) Application
B) Session
C) Transport
D) Presentation

Question 10

At what layer do NICs operate?

A) Transport
B) Data Link
C) Physical
D) Network

Question 11

You are using tracert to determine the path a packet takes across your internetwork. Which OSI Model layer are you examining?

A) Network
B) Transport
C) Session
D) Data Link

Question 12

What is the IEEE standard that governs all forms of Ethernet media and interfaces?

A) 802.11
B) 802.3
C) 802.15
D) 802.2

Question 13

What is a PDU?

A) It is an Application layer protocol that handles delivery of messages.
B) It is a unit of measurement for the maximum amount of data that can be transferred.
C) It is the name given to the unit of information used by each layer.
D) It is a Network layer protocol that handles path determination

Question 14

The IEEE separated the OSI model Physical layer into the LLC sublayer and the MAC sublayer.

Question 15

Which layer of the OSI model is responsible for protocol conversion, if necessary?

A) Application
B) Presentation
C) Session
D) Transport

Question 16

Which of the following is the correct order of the layers of the OSI model from layer 1 to layer 7?

A) Application, Presentation, Session, Transport, Network, Data Link, Physical
B) Application, Session, Transport, Presentation, Network, Data Link, Physical
C) Physical, Data Link, Network, Transport, Session, Presentation, Application
D) Physical, Session, Network, Data Link, Transport, Presentation, Application

Question 17

The Transport layer is the same in both the OSI model and the TCP/IP model.

Question 18

What layer is responsible for making sure that the data that it sends and receives is in a format that the receiving and sending computers can understand?

A) 7
B) 6
C) 5
D) 4

Question 19

What is the IEEE standard that sets the standards for wireless networking?

A) 802.16
B) 802.3
C) 802.15
D) 802.11

Question 20

What function does the Logical Link Control sublayer of the Data Link layer provide?

A) coordinates communication between applications
B) error recovery and flow control
C) physical device addressing
D) controls access to network media

Question 21

Match each item with a statement below.
a.Application layer
b.Presentation layer
c.Session layer
d.Transport layer
e.Network layer
f.Data Link layer
g.Physical layer
h.Media Access Control sublayer
i.Logical Link Control sublayer
j.OSI reference model
This layer uses port numbers as source and destination identifiers.

Question 22

Match each item with a statement below.
a.Application layer
b.Presentation layer
c.Session layer
d.Transport layer
e.Network layer
f.Data Link layer
g.Physical layer
h.Media Access Control sublayer
i.Logical Link Control sublayer
j.OSI reference model
This sublayer manages access to the physical medium.

Question 23

How can you find out what your MAC address is? (Choose all that apply.)

A) Right-click on the Local Area Connection and choose status.
B) Open a command prompt and type the command arp -d.
C) Open a command prompt and type the command getmac.
D) Open a command prompt and type the command ipconfig /all.

Question 24

Match each item with a statement below.
a.Application layer
b.Presentation layer
c.Session layer
d.Transport layer
e.Network layer
f.Data Link layer
g.Physical layer
h.Media Access Control sublayer
i.Logical Link Control sublayer
j.OSI reference model
Routers operate at this layer.

Question 25

Match each item with a statement below.
a.Application layer
b.Presentation layer
c.Session layer
d.Transport layer
e.Network layer
f.Data Link layer
g.Physical layer
h.Media Access Control sublayer
i.Logical Link Control sublayer
j.OSI reference model
Switches operate at this layer.

Question 26

Match each item with a statement below.
a.Application layer
b.Presentation layer
c.Session layer
d.Transport layer
e.Network layer
f.Data Link layer
g.Physical layer
h.Media Access Control sublayer
i.Logical Link Control sublayer
j.OSI reference model
This layer handles data formatting and translation.

Question 27

Match each item with a statement below.
a.Application layer
b.Presentation layer
c.Session layer
d.Transport layer
e.Network layer
f.Data Link layer
g.Physical layer
h.Media Access Control sublayer
i.Logical Link Control sublayer
j.OSI reference model
This sublayer is responsible for error recovery.

Question 28

The ____________ layer is the bottom layer, whose job it is to convert bits into signals and vice versa.

Question 29

At which layer would you find errors that were caused by EMI?

A) Data Link
B) Transport
C) Physical
D) Network

Question 30

The ____________ layer of the TCP/IP model combines the top three layers of the OSI model into one layer.

Question 31

List the layers of the OSI model from the top down, along with their counterparts in the TCP/IP model.

Question 32

What are the benefits to using a layered approach?

Question 33

Which layer is responsible for the encoding of signals?

A) 3
B) 1
C) 5
D) 7

Question 34

The process of stripping the header and trailer from a PDU is called ____________.

Question 35

The PDU at the Data Link layer is called a ____________.

Question 36

Match each item with a statement below.
a.Application layer
b.Presentation layer
c.Session layer
d.Transport layer
e.Network layer
f.Data Link layer
g.Physical layer
h.Media Access Control sublayer
i.Logical Link Control sublayer
j.OSI reference model
This layer handles communication setup and teardown.

Question 37

Match each item with a statement below.
a.Application layer
b.Presentation layer
c.Session layer
d.Transport layer
e.Network layer
f.Data Link layer
g.Physical layer
h.Media Access Control sublayer
i.Logical Link Control sublayer
j.OSI reference model
Computers operate at this layer.

Question 38

Match each item with a statement below.
a.Application layer
b.Presentation layer
c.Session layer
d.Transport layer
e.Network layer
f.Data Link layer
g.Physical layer
h.Media Access Control sublayer
i.Logical Link Control sublayer
j.OSI reference model
Hubs operate at this layer.

Question 39

Match each item with a statement below.
a.Application layer
b.Presentation layer
c.Session layer
d.Transport layer
e.Network layer
f.Data Link layer
g.Physical layer
h.Media Access Control sublayer
i.Logical Link Control sublayer
j.OSI reference model
This is the general framework for how networking systems should operate.

Question 40

What does the Transport layer use to determine the size of a segment?

A) MTU
B) LLC
C) PDU
D) TCP

Question 41

The Transport layer PDU includes a field for window size. What is the window size?

Question 42

What are the sublayers of the Data Link layer, and what do they do?

Question 43

What is encoding, and where does it take place?

Question 44

What does the Data Link layer do with a frame after it receives it?

Question 45

Name the PDU at each layer of the OSI model.

Question 46

What is the significance of the MTU field as it relates to the Transport layer? Give an example of an MTU and how it is used.

Question 47

In regards to the OSI Reference Model, what is peer communication?

Question 48

How does the window size provide flow control?