WGU D315 Pre Assessment 110 Questions with Verified
Answers
What is the TCP/IP layer that includes the Hypertext Transfer Protocol (HTTP)?
1) Application
2) Physical or network access
3) Network or internet
4) Transport - CORRECT ANSWER 1) Application
Which layer of the TCP/IP model includes the Post Office Protocol (POP)?
1) Application
2) Physical or network access
3) Network or internet
4) Transport - CORRECT ANSWER 1) Application
Which layer of the TCP/IP model includes the Internet Message Access Protocol
(IMAP)?
1) Application
2) Physical or network access
3) Network or internet
4) Transport - CORRECT ANSWER 1) Application
The TCP/IP model - CORRECT ANSWER 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
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 (internetworks).
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 model's Session,
Presentation, and Application layers. It provides various network services directly
to user applications and is responsible for handling high-level protocols, data
representation, encoding, and session management.
TCP/IP Key Functions of the network interface layer - CORRECT ANSWER 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 transmission, including frame
synchronization.
MAC Addressing: Handling hardware (MAC) addresses for identifying devices on
the same local network.
Error Detection and Correction: Detecting and possibly correcting errors that
occur in the physical transmission of frames.
TCP/IP Key Functions of the Network layer - CORRECT ANSWER 2) Network Layer
IP Addressing: Assigning logical IP addresses to devices, which are used to identify
and locate them on the network.
Routing: Determining the best path for data to travel from the source to the
destination. This involves forwarding packets through intermediate routers.
Packet Handling: Fragmenting and reassembling packets if they are too large for
the network's maximum transmission unit (MTU).
Protocols: The primary protocol at this layer is the Internet Protocol (IP), including
IPv4 and IPv6. Other protocols include ICMP (Internet Control Message Protocol)
and ARP (Address Resolution Protocol).
,TCP/IP Key Functions of the Transport Layer - CORRECT ANSWER 3) Transport
Layer
Segmentation and Reassembly: Breaking down large messages into smaller
segments for transmission and reassembling them at the destination.
Connection Management: Establishing, maintaining, and terminating
communication sessions between applications.
Error Detection and Correction: Ensuring data integrity through checksums and
acknowledgments.
Flow Control: Managing data flow to prevent congestion and ensure efficient use
of network resources.
Protocols: The primary protocols at this layer are TCP (Transmission Control
Protocol), which provides reliable, connection-oriented communication, and UDP
(User Datagram Protocol), which provides connectionless communication with
less overhead.
TCP/IP Key Functions of the Application Layer - CORRECT ANSWER 4) Application
Layer
Application Services: Providing network services such as email, file transfer, web
browsing, and remote login.
Data Representation: Translating data between application formats and network
formats, including data encryption and compression.
Session Management: Establishing, maintaining, and terminating application
sessions.
Protocols: Examples include HTTP (HyperText Transfer Protocol), FTP (File
Transfer Protocol), SMTP (Simple Mail Transfer Protocol), and DNS (Domain Name
System).
Which OSI model layer is responsible for breaking data into packets?
1) Physical
2) Application
3) Session
4) Transport - CORRECT ANSWER 4) Transport
What is the layer of the OSI model that is responsible for properly transmitting
data packets?
, 1) Presentation
2) Transport
3) Session
4) Physical - CORRECT ANSWER 2) Transport
What is the OSI model layer that includes the IPX?
1) Transport
2) Application
3) Session
4) Network - CORRECT ANSWER 4) Network
What is the OSI model layer that includes the UDP?
1) Network
2) Session
3) Application
4) Transport - CORRECT ANSWER 4) Transport
Transport Layer (Layer 4): This layer is responsible for providing end-to-end
communication services for applications. It manages the delivery and error-
checking of data packets. The Transport layer includes protocols like TCP
(Transmission Control Protocol) and UDP (User Datagram Protocol). UDP is a
connectionless protocol that allows for the sending of datagrams without
establishing a connection, making it suitable for applications that require fast,
efficient transmission such as streaming and online gaming.
Which layer of the OSI model includes the TELNET?
1) Transport
2) Application
3) Network
4) Session - CORRECT ANSWER 2) Application
Application Layer (Layer 7): This layer is the closest to the end user and interacts
directly with the software applications. It provides services for network
applications, such as email, file transfer, and remote terminal access. TELNET is an
Answers
What is the TCP/IP layer that includes the Hypertext Transfer Protocol (HTTP)?
1) Application
2) Physical or network access
3) Network or internet
4) Transport - CORRECT ANSWER 1) Application
Which layer of the TCP/IP model includes the Post Office Protocol (POP)?
1) Application
2) Physical or network access
3) Network or internet
4) Transport - CORRECT ANSWER 1) Application
Which layer of the TCP/IP model includes the Internet Message Access Protocol
(IMAP)?
1) Application
2) Physical or network access
3) Network or internet
4) Transport - CORRECT ANSWER 1) Application
The TCP/IP model - CORRECT ANSWER 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
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 (internetworks).
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 model's Session,
Presentation, and Application layers. It provides various network services directly
to user applications and is responsible for handling high-level protocols, data
representation, encoding, and session management.
TCP/IP Key Functions of the network interface layer - CORRECT ANSWER 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 transmission, including frame
synchronization.
MAC Addressing: Handling hardware (MAC) addresses for identifying devices on
the same local network.
Error Detection and Correction: Detecting and possibly correcting errors that
occur in the physical transmission of frames.
TCP/IP Key Functions of the Network layer - CORRECT ANSWER 2) Network Layer
IP Addressing: Assigning logical IP addresses to devices, which are used to identify
and locate them on the network.
Routing: Determining the best path for data to travel from the source to the
destination. This involves forwarding packets through intermediate routers.
Packet Handling: Fragmenting and reassembling packets if they are too large for
the network's maximum transmission unit (MTU).
Protocols: The primary protocol at this layer is the Internet Protocol (IP), including
IPv4 and IPv6. Other protocols include ICMP (Internet Control Message Protocol)
and ARP (Address Resolution Protocol).
,TCP/IP Key Functions of the Transport Layer - CORRECT ANSWER 3) Transport
Layer
Segmentation and Reassembly: Breaking down large messages into smaller
segments for transmission and reassembling them at the destination.
Connection Management: Establishing, maintaining, and terminating
communication sessions between applications.
Error Detection and Correction: Ensuring data integrity through checksums and
acknowledgments.
Flow Control: Managing data flow to prevent congestion and ensure efficient use
of network resources.
Protocols: The primary protocols at this layer are TCP (Transmission Control
Protocol), which provides reliable, connection-oriented communication, and UDP
(User Datagram Protocol), which provides connectionless communication with
less overhead.
TCP/IP Key Functions of the Application Layer - CORRECT ANSWER 4) Application
Layer
Application Services: Providing network services such as email, file transfer, web
browsing, and remote login.
Data Representation: Translating data between application formats and network
formats, including data encryption and compression.
Session Management: Establishing, maintaining, and terminating application
sessions.
Protocols: Examples include HTTP (HyperText Transfer Protocol), FTP (File
Transfer Protocol), SMTP (Simple Mail Transfer Protocol), and DNS (Domain Name
System).
Which OSI model layer is responsible for breaking data into packets?
1) Physical
2) Application
3) Session
4) Transport - CORRECT ANSWER 4) Transport
What is the layer of the OSI model that is responsible for properly transmitting
data packets?
, 1) Presentation
2) Transport
3) Session
4) Physical - CORRECT ANSWER 2) Transport
What is the OSI model layer that includes the IPX?
1) Transport
2) Application
3) Session
4) Network - CORRECT ANSWER 4) Network
What is the OSI model layer that includes the UDP?
1) Network
2) Session
3) Application
4) Transport - CORRECT ANSWER 4) Transport
Transport Layer (Layer 4): This layer is responsible for providing end-to-end
communication services for applications. It manages the delivery and error-
checking of data packets. The Transport layer includes protocols like TCP
(Transmission Control Protocol) and UDP (User Datagram Protocol). UDP is a
connectionless protocol that allows for the sending of datagrams without
establishing a connection, making it suitable for applications that require fast,
efficient transmission such as streaming and online gaming.
Which layer of the OSI model includes the TELNET?
1) Transport
2) Application
3) Network
4) Session - CORRECT ANSWER 2) Application
Application Layer (Layer 7): This layer is the closest to the end user and interacts
directly with the software applications. It provides services for network
applications, such as email, file transfer, and remote terminal access. TELNET is an
