WGU D315 FINAL STUDY GUIDE WITH ALL CORRECT & 100%
VERIFIED ANSWERS|LATEST EXAM|ALREADY GRADED A+
1. Application Layer Manages network applications (HTTP and FTP); Transfers data
produced by apps over network.
2. Presentation Lay- Translates data from application layer into format required to send over
the
er network; Encrypts data.
3. Session Layer Handles connection establishment, session maintenance, session
termination;
Authenticates between devices.
4. Transport Layer Delivers data; uses either TCP (reliable) or UDP (unreliable).
5. Network Layer Responsible for routing data between networks using source and
destination IP addresses. (Router)
6. Data Link Layer Ensures error-free delivery of data from node to node; Forwards data base
on
MAC address. (Switch, bridge)
7. Physical Layer Handles the physical connections of devices. (Hubs, repeaters, modems,
cabling)
8. Hub Layer 1 Connects router to network, sends data packets to all devices on
the
network
9. Modem Layer 1 Allows computers to communicate over telephone lines
10. Repeater Layer 1 Strengthens, replicates, and regenerates signals weakened over lo
distances
11. Switch Layer 2 Connects devices in a network and allows eflcient communication
12. Bridge Layer 2 Connects two or more LANs together
13. Router Layer 3 Forwards data packets between networks
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,WGU D315 FINAL STUDY GUIDE WITH ALL CORRECT & 100%
VERIFIED ANSWERS|LATEST EXAM|ALREADY GRADED A+
14. Cat3 Supports up to 10 Mbps of data for up to 100 meters, commonly used
for phone lines.
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23
, WGU D315 FINAL STUDY GUIDE WITH ALL CORRECT & 100%
VERIFIED ANSWERS|LATEST EXAM|ALREADY GRADED A+
15. Cat4 Supports 16 Mbps for up to 100 meters, not commonly used today.
16. Cat5 Used in ethernet LANs, contains two twisted pairs; Allows for up to
100 Mbps up to 100 meters between the device and the switch, hub,
or router. (replaced by cat5e)
17. Cat5e Contains 4 twisted pairs supporting 1 Gbps for up to 100 meters.
18. Cat6 Used in ethernet LANs, contains 4 twisted pairs; Supports 1 Gbps up to
100 meters or 10 Gbps up to 55 meters.
19. Cat6a Used in ethernet LANs, contains 4 twisted pairs; Supports 1 Gbps up to
100 meters or 10 Gbps up to 55 meters. Most used in wired networks.
(more resistant to interference than Cat6)
20. Coaxial Cables Copper cables designed to block interference, commonly used in cable TV
21. Single Mode Cable made of single glass or plastic fiber, capable of carrying higher
bandwidth over 50x the distance of a multimode cable.
22. Multimode Cable ettective over medium distances, utilizes light modes, and is
commonly used in LANs; cheaper than single mode.
23. Crossover cable Cable used to directly connect two of the same devices to each other.
24. Patch cable Cable used to connect a device to a wall outlet.
25. Patch Panel Device with multiple network ports, typically connected to switches or
routers.
26. Ping Sends ICMP to a host and listens for a reply; tool for testing
connectivity to other hosts.
27. Ipconfig Provides the user with the IP, subnet mask, and default gateway for each
network adapter. (Windows)
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23
VERIFIED ANSWERS|LATEST EXAM|ALREADY GRADED A+
1. Application Layer Manages network applications (HTTP and FTP); Transfers data
produced by apps over network.
2. Presentation Lay- Translates data from application layer into format required to send over
the
er network; Encrypts data.
3. Session Layer Handles connection establishment, session maintenance, session
termination;
Authenticates between devices.
4. Transport Layer Delivers data; uses either TCP (reliable) or UDP (unreliable).
5. Network Layer Responsible for routing data between networks using source and
destination IP addresses. (Router)
6. Data Link Layer Ensures error-free delivery of data from node to node; Forwards data base
on
MAC address. (Switch, bridge)
7. Physical Layer Handles the physical connections of devices. (Hubs, repeaters, modems,
cabling)
8. Hub Layer 1 Connects router to network, sends data packets to all devices on
the
network
9. Modem Layer 1 Allows computers to communicate over telephone lines
10. Repeater Layer 1 Strengthens, replicates, and regenerates signals weakened over lo
distances
11. Switch Layer 2 Connects devices in a network and allows eflcient communication
12. Bridge Layer 2 Connects two or more LANs together
13. Router Layer 3 Forwards data packets between networks
1/
23
,WGU D315 FINAL STUDY GUIDE WITH ALL CORRECT & 100%
VERIFIED ANSWERS|LATEST EXAM|ALREADY GRADED A+
14. Cat3 Supports up to 10 Mbps of data for up to 100 meters, commonly used
for phone lines.
2/
23
, WGU D315 FINAL STUDY GUIDE WITH ALL CORRECT & 100%
VERIFIED ANSWERS|LATEST EXAM|ALREADY GRADED A+
15. Cat4 Supports 16 Mbps for up to 100 meters, not commonly used today.
16. Cat5 Used in ethernet LANs, contains two twisted pairs; Allows for up to
100 Mbps up to 100 meters between the device and the switch, hub,
or router. (replaced by cat5e)
17. Cat5e Contains 4 twisted pairs supporting 1 Gbps for up to 100 meters.
18. Cat6 Used in ethernet LANs, contains 4 twisted pairs; Supports 1 Gbps up to
100 meters or 10 Gbps up to 55 meters.
19. Cat6a Used in ethernet LANs, contains 4 twisted pairs; Supports 1 Gbps up to
100 meters or 10 Gbps up to 55 meters. Most used in wired networks.
(more resistant to interference than Cat6)
20. Coaxial Cables Copper cables designed to block interference, commonly used in cable TV
21. Single Mode Cable made of single glass or plastic fiber, capable of carrying higher
bandwidth over 50x the distance of a multimode cable.
22. Multimode Cable ettective over medium distances, utilizes light modes, and is
commonly used in LANs; cheaper than single mode.
23. Crossover cable Cable used to directly connect two of the same devices to each other.
24. Patch cable Cable used to connect a device to a wall outlet.
25. Patch Panel Device with multiple network ports, typically connected to switches or
routers.
26. Ping Sends ICMP to a host and listens for a reply; tool for testing
connectivity to other hosts.
27. Ipconfig Provides the user with the IP, subnet mask, and default gateway for each
network adapter. (Windows)
3/
23
