Chapter_2-deck_2

Question 1

how does DSL work?

Answer 1

always on connection: uses existing telephone lines. ethernet to DSL signal conversion. DSL signal is sent to the internet service provider.

Question 2

DSLAM?

Answer 2

DSL access multiplexer: Multiple DSL subscriber lines are multiplexed into a single, high-capacity link

Question 3

CMTS?

Answer 3

The most important component located at the headend (cable provider) is the cable modem termination system . which sends and receives digital cable modem signals on a cable network and is necessary for providing Internet services to cable subscribers.

Question 4

how does Municipal Wi-Fi work?

Answer 4

To connect to a municipal Wi-Fi, a subscriber typically needs a wireless modem, which provides a stronger radio and directional antenna than conventional wireless adapters. this is wifi offered by a city

Question 5

WiMAX ?

Answer 5

Worldwide Interoperability for Microwave Access (WiMAX) . provides high-speed broadband service with wireless access and provides broad coverage like a cell phone network rather than through small Wi-Fi hotspot

Question 6

3g/4g works?

Answer 6

internet access through cell towers.

Question 7

what is LTE?

Answer 7

Long-Term Evolution (LTE) - Refers to a newer and faster technology and is considered to be part of fourth generation (4G) technology.

Question 8

what are the 2 types of VPN?

Answer 8

1- site- to -site: Site-to-site VPNs connect entire networks to each other. uses VPN gateway at each end, router firewall and VPN concentrator.
2. Remote-access VPNs - Remote-access VPNs enable individual hosts, such as telecommuters, mobile users, and extranet consumers, to access a company network securely over the Internet. special VPN software on users computer.