WGU D315 OSI Layer Exam 82 Questions with Verified
Answers
Application Layer - CORRECT ANSWER Application software, network applications.
Anything you can see with your eyeballs like
web browsers and email.
Application Layer - CORRECT ANSWER HTTP and FTP are used as protocols
Presentation Layer - CORRECT ANSWER Data conversion utilities. Protocol
Conversion, data translation.
Presentation Layer - CORRECT ANSWER Data encryption/decryption is done here.
Presentation Layer - CORRECT ANSWER The layer that handles character
encoding.
Session Layer - CORRECT ANSWER Network Operating System. Establishes,
manages & terminates sessions are physical components/functions of this layer.
Session Layer - CORRECT ANSWER NFS and SQL are protocols used at this layer.
Physical Layer - CORRECT ANSWER The layer where everything begins and ends
on the network.
Session Layer - CORRECT ANSWER PPTP and SCP (tunneling) are protocols used at
this layer.
Session Layer - CORRECT ANSWER The layer that uses control protocols and
tunneling protocols
Session Layer - CORRECT ANSWER NetBIOS and PAP are protocols used at this
layer.
Physical Layer - CORRECT ANSWER Physical NICs are protocols used at this layer.
, Network Layer - CORRECT ANSWER The "routing" layer.
Physical Layer - CORRECT ANSWER The layer that is a signal that transports traffic
across the network.
Transport Layer - CORRECT ANSWER Segments are the unit at this layer.
Network Layer - CORRECT ANSWER Layer responsible for fragmenting data with
frames.
Transport Layer - CORRECT ANSWER Network Operating System. Ensures Error
Free Packets. The physical component/function of this layer.
Network Interface Card - CORRECT ANSWER NIC stands for
Transport Layer - CORRECT ANSWER TCP (segments so no missing packets), UDP
(datagrams for streaming like games), and SCTP are protocols used at this layer.
Network Layer - CORRECT ANSWER Packets are the unit of this layer.
Physical Layer - CORRECT ANSWER The layer that deals with Fiber and Cables
Transport Layer - CORRECT ANSWER The "post office" layer.
Data Link Layer - CORRECT ANSWER ARP, PPP, HDLC, and LLC are some of the
protocols used by this layer.
Data Link Layer - CORRECT ANSWER The layer that is the "language" of the
network.
Network Layer - CORRECT ANSWER Provides routing decisions. NAT, PAT
Data Link Layer - CORRECT ANSWER The "switching" layer.
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