Quiz 15C: Troubleshoot Wireless Networks

What defines the media type and interface specifications at the Physical layer of a WAN?

• Modems

• Switches

• Routers

• Access Points

Which WAN technology is often used for long distance communications over public networks?

• LAN

• DSL

• T-carrier

• Ethernet

What is the main responsibility of the demarcation point in WAN connectivity?

• To terminate the customer's cabling

• To terminate the telco's cabling

• To establish a secure network connection

• To manage WAN routing

What term refers to equipment provided or leased by the customer and installed at their site in WAN connectivity?

• Modems

• Routers

• Demarcation points

• Customer premises equipment (CPE)

What is the primary purpose of a CSU/DSU in WAN connectivity?

• To encode signals from Data Terminal Equipment (DTE)

• To perform diagnostic tests on the line

• To terminate the telco's cabling

• To terminate the customer's cabling

What type of modulation does a DSL modem use to transfer data over telephone lines?

• Digital to analog

• Analog to digital

• Digital to digital

• Analog to analog

Which DSL type provides the same downlink and uplink bandwidth?

• SDSL

• ADSL

• VDSL

• FTTP

What technology combines a fiber optic core network with coax links to CPE?

• T-carrier

• DSL

• Metro-Ethernet

• Cable broadband

What is the main drawback of DSL technology?

• Limited coverage range

• High installation cost

• Signal attenuation

• Low data transfer speeds

Which WAN connectivity method is known for its severe latency problems?

•  T-carrier

• Cable broadband

•  Metro-Ethernet

• Satellite