The physical layer is responsible for:

• Routing packets

• Data encryption

• Transmission of raw bits over a medium

• Error detection

Which of the following is not a function of the physical layer?

• Bit synchronization

• Encoding of bits into signals

• Error correction

• Transmission of bits

The physical layer deals with ________.

• Frames

• Packets

• Bits

• Segments

Which device operates at the physical layer of the OSI model?

• Switch

• Router

• Repeater

• Bridge

Which of the following transmission media provides the highest transmission speed?

• Twisted pair cable

• Coaxial cable

• Optical fiber

• Wireless

Which of the following is not a type of copper cable used in networking?

• Twisted pair cable

• Coaxial cable

• Fiber optic cable

• Shielded twisted pair

Which type of copper cabling is most commonly used in LANs?

• Coaxial cable

• UTP (Unshielded Twisted Pair)

• STP (Shielded Twisted Pair)

• Parallel cable

What is the main purpose of twisting pairs in UTP cables?

• To make cable longer

• To reduce electromagnetic interference

• To increase data rate

• To protect from water

Which of the following cable categories supports 1 Gbps Ethernet up to 100 meters?

• Cat 3

• Cat 5e

• Cat 4

• Cat 2

The connector used with twisted pair cabling is called:

• BNC connector

• RJ-45 connector

• SC connector

• LC connector