DCOM 101 Final UPDATED Actual Exam Questions and CORRECT Answers
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Course
DCOM 101
Institution
DCOM 101
DCOM 101 Final UPDATED Actual Exam
Questions and CORRECT Answers
The Physical layer has been divided into two sublayers, called the LLC sublayer and the
MAC sublayer - CORRECT ANSWER- False
Which layer has been subdivided into the Logical Link Control sublayer and the Media
Access Control s...
DCOM 101 Final UPDATED Actual Exam
Questions and CORRECT Answers
The Physical layer has been divided into two sublayers, called the LLC sublayer and the
MAC sublayer - CORRECT ANSWER✔✔- False
Which layer has been subdivided into the Logical Link Control sublayer and the Media
Access Control sublayer? - CORRECT ANSWER✔✔- Data Link
Which layer is responsible for establishing communication setup between the source and
destination computers? - CORRECT ANSWER✔✔- Session
Switches operate at this layer - CORRECT ANSWER✔✔- Data Link Layer
Hubs operate at this layer - CORRECT ANSWER✔✔- Physical Layer
Sublayer manages access to the physical medium. - CORRECT ANSWER✔✔- Media Access
Control sublayer
Computers operate at this layer. - CORRECT ANSWER✔✔- Application Layer
This sublayer is responsible for some error recovery. - CORRECT ANSWER✔✔- Logical
Link Control sublayer
This is the general framework for how networking systems should operate. - CORRECT
ANSWER✔✔- OSI reference model
Routers operate at this layer - CORRECT ANSWER✔✔- Network layer
This layer handles data formatting and translation - CORRECT ANSWER✔✔- Presentation
layer
,This uses port numbers as source and destination identifiers - CORRECT ANSWER✔✔-
Transport layer
This handles communication setup and teardown - CORRECT ANSWER✔✔- Session layer
Which of the following is the correct order of the layers of the OSI model from layer 1 to
layer 7? - CORRECT ANSWER✔✔- Physical, Data Link, Network, Transport, Session,
Presentation, Application
The process of stripping the header and trailer from a PDU is called ____________. -
CORRECT ANSWER✔✔- deencapsulation
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? - CORRECT ANSWER✔✔- Network layer
device
At what layer do NICs operate? - CORRECT ANSWER✔✔- Data Link
Which layer of the OSI model is responsible for encryption and decryption? - CORRECT
ANSWER✔✔- Presentation
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? - CORRECT ANSWER✔✔- encapsulation
The Transport layer segments data into smaller chunks, the size of which is determined by
which of the following? - CORRECT ANSWER✔✔- MTU
What does the Transport layer use to make sure that a message is reassembled correctly on
the receiving device? - CORRECT ANSWER✔✔- sequence number
, 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 - CORRECT ANSWER✔✔-
6
What is the IEEE standard that governs all forms of Ethernet media and interfaces? -
CORRECT ANSWER✔✔- 802.3
What is a PDU? - CORRECT ANSWER✔✔- It is the name given to the unit of information
used by each layer.
The ____________ reference model is a general framework for networking systems that uses
a layered approach to reduce its complexity. - CORRECT ANSWER✔✔- OSI
One of the problems that can occur in the Network layer is the incorrect configuration of a
hosts IP address. - CORRECT ANSWER✔✔- True
Which layer is responsible for determining the best path a packet should travel across an
internetwork? - CORRECT ANSWER✔✔- Network
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? - CORRECT ANSWER✔✔- access control
What information would you find in the header of a Transport layer PDU? - CORRECT
ANSWER✔✔- window size
The Network layer communicates with the Data Link layer and the Session layer -
CORRECT ANSWER✔✔- False
Which layer is responsible for the encoding of signals? - CORRECT ANSWER✔✔- 1
The ____________ layer is the bottom layer, whose job it is to convert bits into signals and
vice versa. - CORRECT ANSWER✔✔- Physical
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