STT-Quiz3

What is the order of bandwidth measurement from smallest to largest?

• Kbps, Mbps, Gbps, Tbps
• Gbps, Tbps, Mbps, Kbps
• Tbps, Mbps, Kbps, Gbps
• Kbps, Tbps, Mbps, Gbps

Which items are collectively referred to as network media?

• routers and switches
• wires and radio waves
• firewalls and servers
• PCs and laptops

What data representation is used when a computer or network device is processing data?

• inferred
• binary
• text
• readable

What allows digital devices to interconnect and transmit data?

• a global positioning sensor
• a smart phone
• a sensor
• a network

A consumer places a smartphone close to a pay terminal at a store and the shopping charge is successfully paid. Which type of wireless technology was used?

• Bluetooth
• Wi-Fi
• NFC
• 3G

Which statement defines a data communications protocol?

• an alliance of network device manufacturers
• a set of rules that govern the communication process
• an exchange agreement of network devices among vendors
• a set of product standards for types of network devices

Which type of network cable is commonly used in backbone networks and telephone companies?

• fiber-optic cable
• coaxial cable
• twisted-pair cable
• shielded twisted-pair cable

Refer to the graphic. What type of cabling is shown?

• plastic fiber-optic
• twisted-pair
• coaxial
• glass fiber-optic

Answer explanation

Data is transmitted across a network on media. Modern networks primarily use three types of media to interconnect devices: Metal wires within cables (copper cable, such as twisted-pair and coaxial cable) - Data is encoded into electrical impulses. Glass or plastic fibers within cables (fiber-optic cable) - Data is encoded into pulses of light. Wireless transmission - Data is encoded via modulation of specific frequencies of electromagnetic waves.

Which data encoding technology is used in fiber-optic cables?

• modulation of specific frequencies of electromagnetic waves
• modulation of electrical voltage
• electrical pulses
• pulses of light

Which term is used to describe the process of placing one message format inside another message format?

• encoding
• multiplexing
• encapsulation
• segmentation