VDV Network Systems Integration 3

Question 1

Which wireless frequency band typically provides longer range but lower throughput compared to 5 GHz?

Accepted Answer

2.4 GHz

Answer

The 2.4 GHz band propagates farther and penetrates walls better than 5 GHz but offers fewer non-overlapping channels and lower maximum data rates.

Question 2

In a VoIP system, what is the recommended maximum one-way latency for acceptable voice quality?

Accepted Answer

150 ms

Answer

ITU-T G.114 recommends a maximum one-way delay of 150 ms for acceptable voice quality in VoIP communications.

Question 3

What type of network topology connects each device directly to a central hub or switch?

Accepted Answer

Star

Answer

In a star topology, all devices connect to a central switch or hub, making troubleshooting easier since a failed link only affects one device.

Question 4

Which standard governs the installation of structured cabling systems in commercial buildings in the United States?

Accepted Answer

TIA-568

Answer

TIA-568 (Telecommunications Cabling Standard) specifies requirements for structured cabling systems in commercial buildings, including cable types, connectors, and installation practices.

Question 5

When integrating a new IP camera into an existing network, what feature allows the switch port to supply power to the camera without a separate power supply?

Accepted Answer

PoE

Answer

Power over Ethernet (PoE) delivers electrical power through Ethernet cables, eliminating the need for separate power supplies for IP cameras and other devices.

(VDV) Voice Data Video Technician Certified Practice Test

(VDV) Voice Data Video Technician Certified Practice Test

VDV Network Systems Integration 3