Network+ Practice (Part 2)

What is an advantage of fiber-optic cabling?

• Signals travel more slowly

• Easier and cheaper to install than UTP

• Greater maximum distance

• Susceptible to electrical interference

Which statement best describes the preamble of an Ethernet frame?

• It contains the CRC.

• It includes a 7-byte series of alternating ones and zeroes followed by a start frame delimiter.

• It contains the MAC address of the source and the destination.

• It contains the IP address of the source and the destination and is used by routers to deliver the frame to the proper location.

What is the minimum size of an Ethernet frame?

• 64 Bytes

• 1024 Bytes

• 256 Bytes

• 1500 Bytes

The 802.3 working group defines wired network standards that share the same basic frame type and __________.

• Physical Bus Topology

• Type of Cabling

• Preamble Size

• Network Access Method

Which mechanism will move a port into a root-inconsistent state if BPDUs coming from a certain direction indicate another switch is trying to become the root bridge?

• Topology Change Notification (TCN)

• Root Stop

• PortFast

• Root Guard

How long is the start frame delimiter?

• 1 Byte

• 2 Bytes

• 4 Bytes

• 7 Bytes

How many pins does an RJ-45 connector have?

• Two

• Four

• Six

• Eight

How many fields does a basic Ethernet frame contain?

• Three

• Five

• Six

• Nine

The different colors of the laser signals transmitted over fiber-optic cables feature different __________.

• Wavelengths

• Speeds

• Temperatures

• Noise Levels

Which term refers to the 100-Mbps standards, even though there are now much faster versions of Ethernet available?

• Fast Ethernet

• Gigabit Ethernet

• Full-Duplex Ethernet

• Switched Ethernet