1.5 Compare and contrast transmission media and transceivers. Flashcards
What standard establishes communication over wireless networks?
802.11 Standard
What does it mean to establish communication over a satellite network?
- A non-terrestrial form of communication.
- High cost relative to terrestrial networking
- Relatively high latency.
What standard establishes communication over a wired network (The Ethernet Standard)?
802.3 Standard
LTE (Cellular Network)
- Long Term Evolution.
- A “4G” technology.
- The standard supports download rate of 150 Mbit/s
LTE-A
- Long Term Evolution - Advanced.
- Standard supports download rates of 300 Mbit/s
5G Networking
- 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.
What is a single-mode fiber?
- This type of fiber optic cable is used for long-range communication (up to 100km without processing).
- Uses expensive light source (laser beams).
What is a multimode fiber?
- This type of fiber optic cable is used for short-range communication (up to 2 km).
- Uses inexpensive light source (LED).
What is a DAC cable?
Direct Attached Copper cable;
What is a twinaxial cable?
This has two inner conductors that has full duplex, is low-cost, and has low latency compared to twisted pair.
What is a coaxial cable?
Two or more forms of cables share a common axis.
What is Plenum cable (space)?
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.
What is non-plenum cable (space)?
Dead/non-circulating airspace where network cables are located at.
What is ethernet?
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.
What is FC?
Fibre Channel, it is a type of transceiver you would need if use a fiber connection.
What is a SFP?
- Small Form-Factor Pluggable.
- Commonly used to provide 1 Gbit/s fiber.
What is SFP+?
- 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.
What is QSFP?
- Quad Small Form-factor Pluggable.
- It is a 4-channel SFP = Four 1 Gbit/s = 4 Gbit/s
What is an SC?
- Subscriber Connector.
- Also known as “square connector” or “standard connector”.
- Pushes onto lock or pull connector to unlock.
What is a LC?
- 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.
What is an ST?
- Straight Tip.
- It is a Bayonet connector that you stick and twist to connect/disconnect.
What is MPO/MTP?
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.
What is an RJ11
- Registered Jack type 11
- 6 position, 2 conductors (6P2C).
- Typically used for Telephone & DSL connection.
What is an RJ45?
- Registered Jack type 45.
- 8 position, 8 conductor (8P8C).
- Typically used for Ethernet connection.
What is an F-type?
The standard threaded connector type most commonly seen with coaxial connectors.
What is a BNC?
- Bayonet Neill-Concelman.
- Push in the connector and twist slightly to lock the connector into place.
What does baseband mean?
It means that a single frequency is using the entire medium (in reference to wired networks).
What does broadband mean?
It means that many frequencies are sharing the medium being used (in reference to wired networks).
What is a twisted pair (TP)?
- 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)
True or False: Do cables have speeds?
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.
What is the most common type of coaxial cable used?
RG-6 is used in television/digital cable.
Where is twinaxial cable most commonly used?
10 Gigabit Ethernet SFP+ cables
What is a transeiver?
- It is a transmitter and receiver built into a single component.
- Provides a modular interface that would match to your network (Fiber or Copper).
