WGU D315 TCP/IP and OSI Models Exam 37 Questions with
Verified Answers
Application Layer (TCP/IP) - CORRECT ANSWER Responsible for the
communication protocols between nodes. The protocols in this layer include
hypertext transfer protocol (HTTP and HTTPS), Secure Shell (SSH), and network
time protocol (NTP), among many others.
Transport Layer (TCP/IP) - CORRECT ANSWER Responsible for the end-to-end
transport of data. The protocols that live in this layer are transmission control
protocol (TCP) and user datagram protocol (UDP).
Network Layer (TCP/IP) - CORRECT ANSWER This layer defines the logical
transmission protocols for the whole network. The main protocols that live in this
layer are internet protocol (IP), internet control message protocol (ICMP), and
address resolution protocol (ARP).
Network Interface Layer (TCP/IP) - CORRECT ANSWER This layer establishes how
data should be physically sent through the network.
Physical Layer (OSI) - CORRECT ANSWER Responsible for the physical connections
of the devices in the network. This layer is implemented through the use of
devices such as hubs, repeaters, modem devices, and physical cabling. unit = bits
Data Link Layer (OSI) - CORRECT ANSWER Responsible for the error-free delivery
of data to the receiving device or node. This layer is implemented through the use
of devices such as switches and bridge devices, as well as anything with a network
interface, like wireless or wired network cards. unit = packets
Network Layer (OSI) - CORRECT ANSWER Responsible for the transmission of data
between hosts in different networks as well as routing of data packets. This layer
is implemented through the use of devices such as routers and some switches.
unit = frames
Verified Answers
Application Layer (TCP/IP) - CORRECT ANSWER Responsible for the
communication protocols between nodes. The protocols in this layer include
hypertext transfer protocol (HTTP and HTTPS), Secure Shell (SSH), and network
time protocol (NTP), among many others.
Transport Layer (TCP/IP) - CORRECT ANSWER Responsible for the end-to-end
transport of data. The protocols that live in this layer are transmission control
protocol (TCP) and user datagram protocol (UDP).
Network Layer (TCP/IP) - CORRECT ANSWER This layer defines the logical
transmission protocols for the whole network. The main protocols that live in this
layer are internet protocol (IP), internet control message protocol (ICMP), and
address resolution protocol (ARP).
Network Interface Layer (TCP/IP) - CORRECT ANSWER This layer establishes how
data should be physically sent through the network.
Physical Layer (OSI) - CORRECT ANSWER Responsible for the physical connections
of the devices in the network. This layer is implemented through the use of
devices such as hubs, repeaters, modem devices, and physical cabling. unit = bits
Data Link Layer (OSI) - CORRECT ANSWER Responsible for the error-free delivery
of data to the receiving device or node. This layer is implemented through the use
of devices such as switches and bridge devices, as well as anything with a network
interface, like wireless or wired network cards. unit = packets
Network Layer (OSI) - CORRECT ANSWER Responsible for the transmission of data
between hosts in different networks as well as routing of data packets. This layer
is implemented through the use of devices such as routers and some switches.
unit = frames
