Network Media
What kind of signal is sent over Copper Cabling?
Electrical Signals
How do the T568A and T568B wiring standards physically differ from each other?
The green and orange pairs trade positions
What jacket color typically identifies a single-mode fiber patch cable?
Yellow
What connector is crimped onto the end of an unshielded twisted-pair cable?
RJ-45 (8P8C) connector
Straight-through cables connect what kind of devices?
Different kinds, such as host to switch or switch to router.
What kind of signal is sent over Fiber-Optic cabling?
Pulses of light
What is the maximum data rate supported by an SFP+ transceiver?
10 Gbps
Why is the hermaphroditic connector design of TFOCA/MFOCA assemblies is useful in the field?
Every plug can connect with every other plug, Marines can daisy-chain cable spools to extend reach without adapters
What technology in modern Gigabit Ethernet interfaces removes the strict need for crossover cables when connecting similar devices?
Auto-MDIX
Cross-over cables connect what kind of devices?
Similar devices, such as host to host or switch to switch
What kind of signal is sent over the wireless network?
Radio Signals
As an electrical signal moves along a copper cable and gradually loses strength, what is this effect called?
Signal attenuation
What technologies does multimode fiber use to generate its light signals?
Light Emitting Diodes or Vertical-Cavity Surface-Emitting Lasers
Which fiber-optic connector uses a bayonet-style twist-on/twist-off locking mechanism?
Straight-Tip (ST)
How many individual wires are in a CAT5 cable?
8 wires
What is the primary purpose of the OSI physical layer?
To transport the bits that make up a data link layer frame across the network media
What is the primary way that unshielded twisted-pair cable defends its signals against interference?
The number of twists in the paired wires
What is the typical core size of single-mode fiber?
9 microns
These connectors are often called square connectors and use a push-pull method to make sure the connector is fully inserted.
Subscriber Connector (SC) Connectors
According to the ANSI/TIA-568 standards, what is the maximum frequency supported by Category 6A cabling?
500 MHz
What do electrical, light-based, and wireless signals stand for on the media?
Logical 1s and 0s
Why do UTP cable designers use a different number of twists per meter for each wire pair inside the cable?
To improve cancellation of electromagnetic interference between the pairs
What does hot-swappable mean in reference to SFP transeivers?
It can be inserted or removed without powering down the device
BNC, N-type, and F-type connectors are primarily used for what kind of cable?
Coaxial cables
What is the maximum distance supported by Category 8 cabling?
30 meters