WGU D315 OA EXAM 2 2026 COMPREHENSIVE QUESTIONS SOLUTIONS GRADED A PLUS SYSTEMS ADMINISTRATION PRACTICE PACKAGE

WGU D315 OA EXAM 2 2026
COMPREHENSIVE QUESTIONS SOLUTIONS
GRADED A PLUS SYSTEMS ADMINISTRATION
PRACTICE PACKAGE

◉ Which OSI layer is organizing the bits over the physical layer
between devices in the same collision domain?
Answer: Data Link 2 - They are in the same Frame


◉ Which OSI layer is a Switch at?
Answer: Data Link 2


◉ Which OSI layer is a WAP (Wireless Access Point) at?
Answer: Data Link 2


◉ Which OSI layer is a router at
Answer: Network (3)


◉ TCP protocol is on what OSI layer
Answer: Transport (4)

, ◉ OSI layer 1
Answer: Physical Layer (Cable, Hubs, Repeaters)


◉ OSI layer 2
Answer: Data Link Layer (Frame, Switch, PPP, Ethernet)


◉ OSI layer 3
Answer: Network Layer (Moves packets, IP)


◉ OSI layer 4
Answer: Transport Layer (TCP, end to end connection)


◉ OSI Layer 5
Answer: Session Layer (API, Sockets, Synch and send to port)


◉ OSI layer 6
Answer: Presentation layer (Syntax and encryption layer, SSL, SSH,
JPEG)


◉ OSI layer 7
Answer: Application layer (end user layer, http, applications)