M2Q9: Cables & Connectors Flashcards
Module 2: Quiz 9
In copper cabling the term STP refers to ___________________.
A. Single Twisted Pair
B. Straight-through Twisted Pair
C. Sheathed Twisted Pair
D. Shielded Twisted Pair
D. Shielded Twisted Pair
Explanation: UTP is Unshielded Twisted Pair and STP is Shielded Twisted Pair. The shielding on an STP cable prevents signal loss, EMI and reduces emissions.
Which of the following types of connectors is used in Plain Old Telephone Service (POTS) connections?
A. RJ11
B. RJ45
C. RJ48C
D. RJ21
A. RJ11
Explanation: Registered Jack 11 (RJ11) was originally created for phone companies in the 1970s for connecting analog voice/telephone lines. Initially the connector type had only 2 pins, but now you will mostly find a 6P6C (six position, six contact) connector plug being used. This is because other standards such as RJ14 and RJ21 in addition to RJ11 can all be used with the 6P6C connector plug type.
To create an Ethernet Crossover cable you must use the TIA/EIA568-B standard on one end of a 4 pair twisted pair cable and on the other end use the TIA/EIA568-A standard.
A. True
B. False
A. True
Explanation: In order to make the transmit pins cross over to the receive pins we must use the T568B standard on one side and the T568A standard on the other side. Performing this wiring pinout will make pin 1 cross to pin 3 and pin 2 cross to pin 6. It’s also important to know the color coding of each of the two TIA/EIA Ethernet cabling standards.
RG-6 and RG-59 are types of ____________ cable.
A. Fiber Optic
B. Twisted Pair
C. Coaxial
D. Multimode
C. Coaxial
Explanation: RG-59 and RG-6 are both coaxial cable types. RG-59 has a smaller copper core and less shielding than RG-6 and is commonly used in CCTV applications. For Cable TV, Satellite, and Cable Modems RG-6 is the best and most commonly used coaxial cable because it has low attenuation at high frequencies even over long distances.
Multimode fiber optics has a longer distance rating than singlemode fiber optics.
A. True
B. False
B. False
Explanation:Singlemode uses a smaller glass core than multimode and a laser rather than an LED. These specifications allow for much longer distances with singlemode fiber than with multimode.
The ____________ connector is a commonly used connector for coaxial cables for connecting RG-6 cable to devices such as cable modems.
A. DB-25
B. F Type
C. BNC
D. RJ-45
B. F Type
Explanation: The F Type connector is used for connections to cable TV, Satellite TV and Cable modems. Another type of coaxial connector is the BNC connector which was used in the days of early Ethernet (10Base2 ThinNet) and is now also used in many other applications including some wireless and radio antennas.
ST, SC, LC, and MT-RJ are all types of connectors for ____________ cables.
A. Fiber Optic
B. Twisted Pair
C. Coaxial
D. Serial
A. Fiber Optic
Explanation: ST (Straight Tip), SC (Subscriber Console), LC (Local Connector) and MT-RJ (Mechanical Transfer Registered Jack) are all connector types for fiber optics.
The _____________ is a compact transceiver that plugs into a designated port on a network device such as a switch for connecting various types of fiber optic or twisted pair connections. This type of transceiver also replaces the older “GBIC” type of transceiver and is sometimes referred to as a “mini-GBIC”.
A. Gigastack
B. DB-60
C. SFP
D. MDF
C. SFP
Explanation: The SFP (Small Form-factor Pluggable) transceiver module is used to connect switches to uplinks and many other scenarios. Different types of SFPs can be used for different types of connections. For example, SFPs are available for various fiber optic and twisted pair Ethernet connections.
Fiber optic cables are susceptible to electromagnetic interference (EMI).
A. True
B. False
B. False
Explanation: Copper is susceptible to EMI due to being made of metal, but fiber is not due being made of glass.
