Broadband Services

Question 1

Which physical layer transmission technology uses an end-point and requires a straight through UTP cable to connect to it from the computer NIC?

Answer 1

xDSL

Question 2

High Bit-Rate Digital Subscriber Line was typically used in what 2 scenarios?

Answer 2

1) interconnect local-exchange carriers

2) carry high-speed corporate data links

Question 3

Small to Medium sized businesses who don’t need the higher performance of leased lines typically use what broadband technology?

Answer 3

SDSL

Question 4

SDSL and ADSL allow you to make calls whilst using the data portion of the line. TRUE or FALSE

Answer 4

FALSE, only ADSL

Question 5

Which broadband technology uses a single copper pair and can utilize bandwidth of up to 30Mhz to provide data-rates exceeding 100Mbps in both directions at 300 meters?

Answer 5

Very High Bit-Rate DSL

Question 6

All cable modems have to meet what standard?

Answer 6

the Data over Cable Service Interface Specifications (DOCSIS)

Question 7

In a cable modem system, what happens at the Headend?

Answer 7

all cable signals are received and processed and then transmitted over the distribution network

Question 8

Cable distribution networks are composed of a mix of what two mediums?

Answer 8

fiber-coaxial and hybrid fibre-coaxial (HFC)

Question 9

in cable networks, the local coaxial medium connected to homes and business is usually connected to an optical node that converts RF to fibre to send to the headend. TRUE or FALSE

Answer 9

TRUE

Question 10

Cable modems typically give a download speed of?

Answer 10

20Mbps

Question 11

Whcih broadband service uses ethernet standards and MPLS?

Answer 11

Metro Ethernet

Question 12

List the 4 xDSL flavours

Answer 12

1) ADSL
2) VDSL (Very High Speed DSL)
3) HDSL (High Speed DSL)
4) SDSL