1.5 Compare and contrast transmission media and transceivers.

Question 1

What standard establishes communication over wireless networks?

Answer 1

802.11 Standard

Question 2

What does it mean to establish communication over a satellite network?

Answer 2

• A non-terrestrial form of communication.
• High cost relative to terrestrial networking
• Relatively high latency.

Question 3

What standard establishes communication over a wired network (The Ethernet Standard)?

Answer 3

802.3 Standard

Question 4

LTE (Cellular Network)

Answer 4

• Long Term Evolution.
• A “4G” technology.
• The standard supports download rate of 150 Mbit/s

Question 5

LTE-A

Answer 5

• Long Term Evolution - Advanced.
• Standard supports download rates of 300 Mbit/s

Question 6

5G Networking

Answer 6

• A fifth generation cellular networking that was launched worldwide in 2020 with significant performance improvements such as higher frequencies, 10 gigabits per second.
• Bandwidth becomes less of a constraint, allows larger data transfers, additional cloud processing.

Question 7

What is a single-mode fiber?

Answer 7

• This type of fiber optic cable is used for long-range communication (up to 100km without processing).
• Uses expensive light source (laser beams).

Question 8

What is a multimode fiber?

Answer 8

• This type of fiber optic cable is used for short-range communication (up to 2 km).
• Uses inexpensive light source (LED).

Question 9

What is a DAC cable?

Answer 9

Direct Attached Copper cable;

Question 10

What is a twinaxial cable?

Answer 10

This has two inner conductors that has full duplex, is low-cost, and has low latency compared to twisted pair.

Question 11

What is a coaxial cable?

Answer 11

Two or more forms of cables share a common axis.

Question 12

What is Plenum cable (space)?

Answer 12

Active/circulating airspace where network cables are located at; Flourinated ethylene polymer (FEP) or low-smoke polyvinyl chloride (PVC) because they are fire-rated to be in that space; this type of cable may not be as flexible to maneuver.

Question 13

What is non-plenum cable (space)?

Answer 13

Dead/non-circulating airspace where network cables are located at.

Question 14

What is ethernet?

Answer 14

The most poplar networking technology in the world; it is the standard and is very common, almost nearly universal; modern ethernet uses twisted pair of copper or fiber.

Question 15

What is FC?

Answer 15

Fibre Channel, it is a type of transceiver you would need if use a fiber connection.

Question 16

What is a SFP?

Answer 16

• Small Form-Factor Pluggable.
• Commonly used to provide 1 Gbit/s fiber.

Question 17

What is SFP+?

Answer 17

• Enhanced Small Form-Factor Pluggable.
• Exactly the same size as SFPs but supports data rates up to 16 Gbit/s and is most commonly used with 10 Gigabit Ethernet.

Question 18

What is QSFP?

Answer 18

• Quad Small Form-factor Pluggable.
• It is a 4-channel SFP = Four 1 Gbit/s = 4 Gbit/s

Question 19

What is an SC?

Answer 19

• Subscriber Connector.
• Also known as “square connector” or “standard connector”.
• Pushes onto lock or pull connector to unlock.

Question 20

What is a LC?

Answer 20

• Local connector.
• Also known as “lucent connector” or “little connector”.
• Smaller and more compact connector with a clip on-top that you will need to press to release.

Question 21

What is an ST?

Answer 21

• Straight Tip.
• It is a Bayonet connector that you stick and twist to connect/disconnect.

Question 22

What is MPO/MTP?

Answer 22

Multi-fiber Push On; it has twelve fibers in a single connector allowing you to save space and manage one cable; push to lock into place like the SC.

Question 23

What is an RJ11

Answer 23

• Registered Jack type 11
• 6 position, 2 conductors (6P2C).
• Typically used for Telephone & DSL connection.

Question 24

What is an RJ45?

Answer 24

• Registered Jack type 45.
• 8 position, 8 conductor (8P8C).
• Typically used for Ethernet connection.

Question 25

What is an F-type?

Answer 25

The standard threaded connector type most commonly seen with coaxial connectors.

Question 26

What is a BNC?

Answer 26

- Bayonet Neill-Concelman. - Push in the connector and twist slightly to lock the connector into place.

Question 27

What does baseband mean?

Answer 27

It means that a single frequency is using the entire medium (in reference to wired networks).

Question 28

What does broadband mean?

Answer 28

It means that many frequencies are sharing the medium being used (in reference to wired networks).

Question 29

What is a twisted pair (TP)?

Answer 29

- A type of copper cabling consisting of multiple wires twisted together in the same sheathing. - The purpose is that it keeps a single wire constantly moving away from interference (the opposite signals are compared to the other end)

Question 30

True or False: Do cables have speeds?

Answer 30

False, the signal encoding determines the data transfer rate. The IEEE for Ethernet Standard establishes CATEGORIES for the minimum requirement of what type of cable should be used.

Question 31

What is the most common type of coaxial cable used?

Answer 31

RG-6 is used in television/digital cable.

Question 32

Where is twinaxial cable most commonly used?

Answer 32

10 Gigabit Ethernet SFP+ cables

Question 33

What is a transeiver?

Answer 33

- It is a transmitter and receiver built into a single component. - Provides a modular interface that would match to your network (Fiber or Copper).