WGU PRE ASSESSMENT D315 EXAM
QUESTIONS & DETAILED SOLUTIONS PASSED
ALREADY GRADED A+
1. What is the TCP/IP layer
1) Application
that includes the
Hypertext Trans- fer
Protocol (HTTP)?
1) Application
2) Physical or network
access
3) Network or internet
4) Transport
1) Application
2. Which layer of the
TCP/IP model includes
the Post Of- fice
Protocol (POP)?
1) Application
2) Physical or network
access
3) Network or internet 1) Application
4) Transport
3. Which layer of the
TCP/IP model includes
the Inter- net Message
Access Protocol (IMAP)?
1) Application
2) Physical or network
access
3) Network or internet
4) Transport
1/
88
,WGU PRE ASSESSMENT D315 EXAM
QUESTIONS & DETAILED SOLUTIONS PASSED
ALREADY GRADED A+
4. The TCP/IP model 1) Network Interface Layer (or Link Layer)
Function: This layer combines the functions of the OSI
model's Physical and Data Link layers. It is responsible for
the physical transmission of data over a network
medium and handling the hardware addressing and
access control protocols that
2/
88
,WGU PRE ASSESSMENT D315 EXAM
QUESTIONS & DETAILED SOLUTIONS PASSED
ALREADY GRADED A+
manage the data link between two directly connected
nodes.
2) Network Layer
Function: This layer corresponds to the Network layer
in the OSI model. It is responsible for logical
addressing, routing, and delivering packets across
networks. It ensures that data packets can travel across
multiple interconnected networks (internet- works).
3) Transport Layer
Function: This layer corresponds to the Transport
layer in the OSI model. It is responsible for ensuring
reliable data transfer between devices, providing error
recovery, and flow control. It can establish, maintain,
and terminate connections between applications.
4) Application Layer
Function: This layer combines the functions of the OSI
mod- el's Session, Presentation, and Application layers.
It provides various network services directly to user
applications and is responsible for handling high-level
protocols, data represen- tation, encoding, and
5. TCP/IP Key Functions of session management.
the network interface
layer 1) Network Interface Layer (or Link Layer)
Physical Transmission: Converting data into signals
appropriate for the transmission medium (e.g., electrical
signals for cables, radio signals for wireless).
Data Framing: Packaging data into frames for
3/
88
, WGU PRE ASSESSMENT D315 EXAM
QUESTIONS & DETAILED SOLUTIONS PASSED
ALREADY GRADED A+
transmission, including frame
synchronization.
MAC Addressing: Handling hardware
(MAC) addresses for identifying
devices on the same local network.
4/
88
QUESTIONS & DETAILED SOLUTIONS PASSED
ALREADY GRADED A+
1. What is the TCP/IP layer
1) Application
that includes the
Hypertext Trans- fer
Protocol (HTTP)?
1) Application
2) Physical or network
access
3) Network or internet
4) Transport
1) Application
2. Which layer of the
TCP/IP model includes
the Post Of- fice
Protocol (POP)?
1) Application
2) Physical or network
access
3) Network or internet 1) Application
4) Transport
3. Which layer of the
TCP/IP model includes
the Inter- net Message
Access Protocol (IMAP)?
1) Application
2) Physical or network
access
3) Network or internet
4) Transport
1/
88
,WGU PRE ASSESSMENT D315 EXAM
QUESTIONS & DETAILED SOLUTIONS PASSED
ALREADY GRADED A+
4. The TCP/IP model 1) Network Interface Layer (or Link Layer)
Function: This layer combines the functions of the OSI
model's Physical and Data Link layers. It is responsible for
the physical transmission of data over a network
medium and handling the hardware addressing and
access control protocols that
2/
88
,WGU PRE ASSESSMENT D315 EXAM
QUESTIONS & DETAILED SOLUTIONS PASSED
ALREADY GRADED A+
manage the data link between two directly connected
nodes.
2) Network Layer
Function: This layer corresponds to the Network layer
in the OSI model. It is responsible for logical
addressing, routing, and delivering packets across
networks. It ensures that data packets can travel across
multiple interconnected networks (internet- works).
3) Transport Layer
Function: This layer corresponds to the Transport
layer in the OSI model. It is responsible for ensuring
reliable data transfer between devices, providing error
recovery, and flow control. It can establish, maintain,
and terminate connections between applications.
4) Application Layer
Function: This layer combines the functions of the OSI
mod- el's Session, Presentation, and Application layers.
It provides various network services directly to user
applications and is responsible for handling high-level
protocols, data represen- tation, encoding, and
5. TCP/IP Key Functions of session management.
the network interface
layer 1) Network Interface Layer (or Link Layer)
Physical Transmission: Converting data into signals
appropriate for the transmission medium (e.g., electrical
signals for cables, radio signals for wireless).
Data Framing: Packaging data into frames for
3/
88
, WGU PRE ASSESSMENT D315 EXAM
QUESTIONS & DETAILED SOLUTIONS PASSED
ALREADY GRADED A+
transmission, including frame
synchronization.
MAC Addressing: Handling hardware
(MAC) addresses for identifying
devices on the same local network.
4/
88
