Section 10: Wired WAN Connections

Question 1

What is 3G?

Answer 1

Supports 144 Kbs, and uses a wider frequency band with frequencies from 1.6 Ghz to 2 Ghz.

Question 2

What is 4G?

Answer 2

Introduced MIMO, (multiple input, multiple output), and covers frequencies from 2 Ghz to 8 Ghz.

Often called 4G LTE (Long Term Evolution)

Question 3

What is 5G?

Answer 3

Reaches speeds up to 10 Gbps and is split into 3 frequency bands: Low, Mid, and High

Question 4

What does Low-Band Frequency operate in?

Answer 4

Operates between 600-850 Mhz and provides speeds of 30-250 Mbps

Question 5

What does Mid-Band Frequency operate in?

Answer 5

Operates between 2.5 to 3.7 Ghz and supports high data rates of 100-900 Mbps

Question 6

What does High-Band Frequency operate in?

Answer 6

Operates between 25-39 Ghz

Question 7

What is the Global System for Mobile Communications (GSM)?

Answer 7

A cellular technology that takes your voice during a call and converts it to digital data

A SIM card is used to identify yourself to the network

Question 8

What is Code-Division Multiple Access (CDMA)?

Answer 8

For every call that is made, the data is encoded with a unique key and then all data streams can be transmitted at once in a single channel

Question 9

What is a Digital Subscriber Line (DSL)?

Answer 9

A family of technologies that are used to transmit digital data over telephone lines

Question 10

What is the Multiprotocol Label Switching (MPLS)?

Answer 10

Supports multiple protocols on the same network (used by service providers)

Question 11

What is a Software-Defined Wide Area Network (SDWAN)?

Answer 11

A virtual WAN architecture that allows enterprises to leverage any combination of transport services to securely connects users to their applications

Question 12

What is Multipoint Generic Routing Encapsulation (mGRE)?

Answer 12

A protocol that can be used to enable one node to communicate with many other nodes, essentially creating a point to multipoint link