OSI Model PE

Question 1

Which layer of the OSI model is concerned with error detection and flow control and is where ARP resides?

Answer 1

layer 2/data link

Question 2

Which layer of the TCP/IP model consists of the Application, Presentation and Session layers of the OSI model?

Answer 2

application

Question 3

What is the layer 2 Protocol Data Unit called?

Answer 3

frame

Question 4

If a data unit is going from a frame to a packet, what process is occurring?

Answer 4

decapsulation

Question 5

Which layer establishes, manages, and terminates connections between applications?

Answer 5

layer 5, session layer

Question 6

The OSI layer 3 Protocol Data unit is referred to as a(n) “____

Answer 6

packet

Question 7

What layer of the OSI model primarily deals with technologies such as JPEG?

Answer 7

layer 6, presentation layer

Question 8

What is described as the process of taking a piece of data and wrapping it in another type of data?

Answer 8

encapsulation

Question 9

The Transport layer primarily handles encryption/decryption?

Answer 9

false

Question 10

Which layer provides the user with an interface to a resource?

Answer 10

application layer

Question 11

Which layer of the OSI model is primarily responsible for encryption and can host the security protocols TLS and SSL?

Answer 11

layer 6, presentation layer

Question 12

The __ model is used to describe how networks connect and properly communicate, rather than how network communication functions from start to finish?

Answer 12

TCP/IP

Question 13

Name one of the protocols discussed that operate at Layer 4 of the OSI model.

Answer 13

UDP/TCP

Question 14

How many layers are in the TCP/IP Model?

Answer 14

4

Question 15

The network layer uses IP addresses to route data.

Answer 15

true

Question 16

HTTP resides at layer ___ of the OSI model.
HTTPS resides at layer ___ of the OSI model

Answer 16

layer 7, layer 7

Question 17

Which layer is responsible for the following:

• Establishing and managing connections between local and remote applications
• Establishing procedures for check-pointing, suspending, restarting, and terminating a connection

Answer 17

session layer

Question 18

Security Protocols belong to which layer of the OSI Model?

Answer 18

layer 6, presentation layer

Question 19

In which layer, during encapsulation, is a header and trailer added to a packet?

Answer 19

layer 2, data link layer

Question 20

What process occurs when the PDU goes from a bit to a frame?

Answer 20

decapsulation

Question 21

What layer is responsible for the following:
- Detecting and (sometimes) correcting errors
- Flow control & Congestion avoidance
- Defining the protocol to establish and terminate a connection between two connected devices

Answer 21

data-link

Question 22

What process describes network communication going from a segment to data?

Answer 22

decapsulation

Question 23

What layers of the OSI model hold network addresses?
(Format: ‘___ Layer and ____ Layer’)

Answer 23

network layer and data-link layer