Interfaces and Cables Flashcards
How many pairs of wires are used in a 10GBASE-T cable?
4 (=8 wires)
IEEE standard ______ = 10 Gbps Ethernet (10GBASE-T)
802.3an
Fiber-Optic cables are connected to ______ transceivers in a router or switch.
SFP (Small Form-Factor Pluggable)
_____ cables emit a faint signal outside of the cable, which can be detected and copied.
UTP (UN-shielded Twisted Pair)
If Auto MDI-X (Medium Dependent Interface Crossover) is disable, what kind of UTP cable should be used to connect two routers together?
Crossover Cable
IEEE standard _____ = 1 Gbps Ethernet (1000BASE-T)
802.3ab
Why are the wire pairs in a UTP cable twisted together?
It protects against EMI (Electromagnetic Interfarence)
IEEE standard _____ = 100 Mbps Ethernet (100BASE-T)
802.3u
_____ cables are vulnerable to EMI (Electromagnetic Interference)
UTP (UN-shielded Twisted Pair)
Which is cheaper, single-mode or multi-mode fiber?
Multi-mode Fiber
What is the speed of a ‘FastEthernet’ connection?
100 Mbps
What are the two main kinds of fiber-optic cable?
Single-mode and Multi-mode
A _____ connection allows both devices to send and receive data at the same time
Full-Duplex
IEEE standard _____ = 10 Mbps Ethernet (10BASE-T)
802.3i
Which allows longer cables, single-mode or multi-mode fiber?
Single-mode
In a FastEthernet connection, a PC receives data on which pins?
3 and 6
How many pairs of wires are used in a 10BASE-T cable?
2 (=4 wires)
How many bits are in 1 megabit?
1,000,000 (1 million)
10GBASE-LR maximum cable length:
10 kilometers
Ethernet was originally defined in the IEEE _______ standard in 1983.
802.3
Multi-mode Fiber cables have a _______ fiberglass core than single-mode fiber cables.
Wider
How many bits are in 1 terabit?
1,000,000,000,0000 (1 trillion)
How many bits are in kilobit?
1,000 (one thousand)
In a FastEthernet connection, a firewall receives data on which pins
3 and 6
