13.Wired LANs: Ethernet

__________ uses four twisted pairs.

• 1000Base-LX
• 1000Base-T
• 1000Base-SX
• none of the above

1000Base-SX, 1000Base-LX, and 1000Base-CX use _________ block coding and ________ line coding.

• 8B/10B; NRZ
• 4B/5B; NRZ
• 8B/10B; MLT-3
• 4B/5B; MLT-3

_________ uses two fiber-optic cables.

• 100Base-FX
• 100Base-T4
• 100Base-TX
• none of the above

__________ uses two optical fibers and a short-wave laser source.

• 1000Base-LX
• 1000Base-SX
• 1000Base-T
• none of the above

What is the hexadecimal equivalent of the Ethernet address 01011010 00010001 01010101 00011000 10101010 00001111?

• 5A:81:BA:81:AA:0F
• 5A:11:55:18:AA:0F
• 5A:88:AA:18:55:F0
• 5A:18:5A:18:55:0F

In Ethernet addressing, if all the bits are 1s, the address is _________.

• multicast
• broadcast
• unicast
• none of the above

If an Ethernet destination address is 07:01:02:03:04:05, then this is a ______ address.

• broadcast
• unicast
• multicast
• any of the above

Each station on an Ethernet network has a unique _______ address imprinted on its network interface card (NIC).

• 48-bit
• 32-bit
• 5-byte
• none of the above

Gigabit Ethernet has a data rate of ________Mbps.

• 10,000
• 1000
• 100
• 10

In the Ethernet frame, the _______ field contains error detection information.

• address
• preamble
• CRC
• none of the above