INSY 3303 Exam 3 (2025) Actual Exam Questions and Answers A+ Graded.

INSY 3303 Exam 3 (2025) Actual Exam
Questions and Answers A+ Graded




Wireless .Access .Point(AP)! .- .CORRECT .ANSWER .-- .radio .transceiver .that .plays
.the .same .role .as .a .hub .or .switch .
.- .directional/omnidirectional .antennas


Backbone .Design! .- .CORRECT .ANSWER .-- .switched .backbone .is .most .effective
.architecture .for .the .distribution .layer, .in .terms .of .cost .and .performance


-routed .backbone .is .used .for .core .layer

-VLANs .add .considerable .cost/complexity .to .the .network
.1. .switched .backbone .or .VLAN .for .the .distribution .layer .and .a .routed
.backbone .for .the .core .layer
.2. .the .best .practice .recommendation .for .the .backbone .technologies .is .gigabit
.Ethernet


Backbone(BN) .- .CORRECT .ANSWER .-Two .Components:
.-The .Cable
.-Hardware .devices .that .connect .other .networks .to .BN(switches, .routers, .VLAN
.switches)


Switches .- .CORRECT .ANSWER .-use .the .data .link .layer .to .forward .packets
.between .network .segments
.- .operate .at .data .link .layer


Routers .- .CORRECT .ANSWER .-- .connect .two .different .TCP/IP .subnets
-operate .at .the .network .layer

VLAN .switches .- .CORRECT .ANSWER .--special .combination .of .layer .3 .switches
.and .routers


Distribution .Layer .- .CORRECT .ANSWER .--distributes .network .traffic .to .and
.from .the .LANs.


Campus .Network .- .CORRECT .ANSWER .--Interconnected .LANs .within .a .limited
.geographic .area
-core .layer
-connects .all .buildings

, Committed .Information .Rate .(CIR) .- .CORRECT .ANSWER .--the .data .rate .the .PVC
.guarantees .to .transmit
.- .if .network .accepts .the .connection, .it .guarantees .to .provide .that .level .of
.service


Channel .Service .Unit/Data .Service .Unit .(CSU/DSU) .- .CORRECT .ANSWER .--
.takes .outgoing .packets .and .translates .it .to .use .the .data .link .layer .and
.networks .protocols .used .in .WAN
.- .WAN .equivalent .of .a .networks .protocols .used .in .the .Network .Interface
.Card(NIC)


Carrier .Sense .Multiple .Access .with .Collision .Detection .(CSMA/CD) .- .CORRECT
.ANSWER .--media .access .technique
.
-waits .until .circuit .is .free .then .transmits
.- .computers .wait .until .no .other .devices .are .transmitting .then .transmit .their
.frames


-for .wired .ethernet

Encapsulating .Security .Payload .(ESP) .- .CORRECT .ANSWER .-- .receives .IP
.packet
- .encrypts/encapsulates .it
- .Contents .are .encrypted .so .no .one .other .then .VPN .gateway .can .read(IP
.packet, .TCP .segment, .HTTP)


Wired .Ethernet .- .CORRECT .ANSWER .-- .Hub-Based
- .Switch-Based
- .Layer .2 .Switch

Hub-based .Ethernet .- .CORRECT .ANSWER .-- .bus .topology: .all .computers .are
.connected .to .one .half-duplex .circuit .running .the .length


-frames .from .any .computer .go .onto .the .central .cable .and .through .it .to .all
.computers .on .the .LAN


Switch-Based .Ethernet .- .CORRECT .ANSWER .-- .Forwarding .Table: .lists .ethernet
.address .of .the .computer .connected .to .each .port .on .the .switch


Layer .2 .Switch .- .CORRECT .ANSWER .-- .Cut-Through .Switching
.- .begins .to .transmit .the .incoming .packet .on .the .proper .outgoing .circuit .as
.soon .as .it .has .read .the .destination .address .in .the .frame


- .Fragment-Free .Switching
.- .examines .first .64 .bytes, .and .if .correct, .the .switch .presents .frame .is .error .free
.and .begins .transmitting


Wireless(Wi-Fi) .- .CORRECT .ANSWER .-- .central .AP .all .computers .direct
.transmission