CCNA1 Lesson 3

Open Ended

What is the OSI layer?

Multiple Choice

Which of the following is the first layer in the OSI model?

• Physical Layer

• Data Link Layer

• Network Layer

• Application Layer

Multiple Choice

Why is understanding the physical layer important for building and maintaining computer networks?

• It helps in choosing the right software applications.
• It focuses solely on network security measures.
• Important for selecting appropriate hardware, ensuring reliable data transmission

• It is only relevant for wireless networks.

Fill in the Blank

The process of wrapping data with the necessary information so it can travel across a network safely and correctly is called ___.

Open Ended

List the three functional areas addressed by physical layer standards.

Multiple Choice

Which of the following best describes bandwidth in a digital network?

• The speed at which a computer operates

• The capacity at which a medium can carry data

• The number of devices connected to a network

• The distance data travels in a network

Multiple Select

Which of the following are types of copper cabling used in networks?

• Unshielded Twisted-Pair (UTP) Cable

• Shielded Twisted-Pair (STP) Cable

• Coaxial Cable

• Fiber-Optic Cable

Multiple Select

Which of the following are types of wireless media mentioned in the lesson?

• Wi-Fi (IEEE 802.11)

• Bluetooth (IEEE 802.15)

• Ethernet (IEEE 802.3)

• Zigbee (IEEE 802.15.4)

Multiple Choice

Which of the following is a main advantage of fiber optic cabling over other media?

• Higher bandwidth and longer distance transmission

• Lower cost than copper cabling

• Easier to install than UTP cables

• More susceptible to electromagnetic interference

Fill in the Blank

Optical fiber cable is immune to ___ and RFI.