WGU C172 Final Review Questions and Correct
Answers with Verified Solutions | New Update
2026
WWW, SMTP, FTP, HTTP, Telnet - ANSWERS Application Layer Protocols (5)
JPEG, ASCII, XML - ANSWERS Presentation Layer Protocols
NFS, SQL, ASP, RPC - ANSWERS Session Layer Protocols (4)
IP, ICMP, ARP, DHCP, IPx - ANSWERS Network Layer Protocols (5)
Ethernet, 802.3, MAC - ANSWERS Data Link Layer Protocols
PPP, ADSL, EIA/TIA, UTP, Fiber, Nics - ANSWERS Physical Layer "Protocols"
Identify and Establish - ANSWERS The Application Layer __________
and_________ availability of desired communication partner
resources - ANSWERS Layer 1 verifies that sufficient ________ exist for
communication
log message, interpret requests, info needed for requests - ANSWERS 3 other
functions of Application Layer
,accepts and structures messages for application layer, translates messages, data
compression and encryption - ANSWERS Functions of Layer 6
systems, nodes, connections (sessions) - ANSWERS Layer 5 co-coordinates
communications between _____ and _____; controls functions to establish,
manage, and terminate ___________ for user requests
integrity, segments, reassembles, flow, multiplexes, virtual circuits - ANSWERS
Layer 4 maintains message ________ between source and destination; _______
and __________ packets; handles __________ control; _______________ upper
layer apps, session establishment, and tearing down ________ __________
outgoing, segments, header, controller - ANSWERS Layer 3 accepts ________
messages and combines _____________ to packets; adds a ___________ with
routing information; is the network _________
error, flow, sequencing, terminals - ANSWERS Layer 2 uses _________
recovery, _____ control (synching), and ___________ to send and receive from
_________
control layers, framing, token passing - ANSWERS Layer 2 protocols LLC and
MAC have these functions (3)
Preamble, start frame delimiter, destination MAC, source MAC, length/type -
ANSWERS The header spans these (5) sections of the frame
, Data/payload, frame check sequence - ANSWERS Last to section of a frame
802.1Q - ANSWERS Wireless Standard associated with Ethernet Frame
Class A - ANSWERS IP: 0-126.....10.x.x.x
Class B - ANSWERS IP: 128-191.....172.16-31.x.x
Class C - ANSWERS IP: 192-223.....192.168.x.x
Class D - ANSWERS IP: 224-239
IPv6 - ANSWERS Implemented for increased mobility; year 2003 => unicast
Subnet - ANSWERS Bits borrowed for ID; smaller, manageable segments
DSSS - ANSWERS b/g/n
14 channels
22Mhz
2.4Ghz
15Mband
^cost
^power
Answers with Verified Solutions | New Update
2026
WWW, SMTP, FTP, HTTP, Telnet - ANSWERS Application Layer Protocols (5)
JPEG, ASCII, XML - ANSWERS Presentation Layer Protocols
NFS, SQL, ASP, RPC - ANSWERS Session Layer Protocols (4)
IP, ICMP, ARP, DHCP, IPx - ANSWERS Network Layer Protocols (5)
Ethernet, 802.3, MAC - ANSWERS Data Link Layer Protocols
PPP, ADSL, EIA/TIA, UTP, Fiber, Nics - ANSWERS Physical Layer "Protocols"
Identify and Establish - ANSWERS The Application Layer __________
and_________ availability of desired communication partner
resources - ANSWERS Layer 1 verifies that sufficient ________ exist for
communication
log message, interpret requests, info needed for requests - ANSWERS 3 other
functions of Application Layer
,accepts and structures messages for application layer, translates messages, data
compression and encryption - ANSWERS Functions of Layer 6
systems, nodes, connections (sessions) - ANSWERS Layer 5 co-coordinates
communications between _____ and _____; controls functions to establish,
manage, and terminate ___________ for user requests
integrity, segments, reassembles, flow, multiplexes, virtual circuits - ANSWERS
Layer 4 maintains message ________ between source and destination; _______
and __________ packets; handles __________ control; _______________ upper
layer apps, session establishment, and tearing down ________ __________
outgoing, segments, header, controller - ANSWERS Layer 3 accepts ________
messages and combines _____________ to packets; adds a ___________ with
routing information; is the network _________
error, flow, sequencing, terminals - ANSWERS Layer 2 uses _________
recovery, _____ control (synching), and ___________ to send and receive from
_________
control layers, framing, token passing - ANSWERS Layer 2 protocols LLC and
MAC have these functions (3)
Preamble, start frame delimiter, destination MAC, source MAC, length/type -
ANSWERS The header spans these (5) sections of the frame
, Data/payload, frame check sequence - ANSWERS Last to section of a frame
802.1Q - ANSWERS Wireless Standard associated with Ethernet Frame
Class A - ANSWERS IP: 0-126.....10.x.x.x
Class B - ANSWERS IP: 128-191.....172.16-31.x.x
Class C - ANSWERS IP: 192-223.....192.168.x.x
Class D - ANSWERS IP: 224-239
IPv6 - ANSWERS Implemented for increased mobility; year 2003 => unicast
Subnet - ANSWERS Bits borrowed for ID; smaller, manageable segments
DSSS - ANSWERS b/g/n
14 channels
22Mhz
2.4Ghz
15Mband
^cost
^power
