Branch Connection

Question 1

Provide high-speed connections over installed copper wires

Answer 1

DSL

Question 2

Advantage of DSL

Answer 2

Each user has a separate direct connection to the DSLAM

Question 3

Main broadband wireless technologies

Answer 3

Municipal Wi-Fi
Cellular/mobile
Satellite internet

Question 4

Satellite

Answer 4

Expensive, Limited capacity per subscriber

Question 5

Cellular/mobile

Answer 5

Coverage is often the isue

Question 6

DSL

Answer 6

Limited bandwidth that is distance sensitive

Question 7

Cable

Answer 7

Bandwidth shared by many users, slow data rates during high-usage hours

Question 8

Fiber-to-home

Answer 8

Requires fiber installation directly to the home

Question 9

Wi-Fi Mesh

Answer 9

Most municipalities do not have a mesh network deployed

Question 10

Creates a PPP tunnel over an Ethernet connection

Answer 10

PPPoE

Question 11

In show interface brief, what does status column refer to ?

Answer 11

Layer 1 Status (Physical)

Question 12

In show interface brief, what does protocol column refer to ?

Answer 12

Layer 2 Status (Data)

Question 13

What happens if the protocol column displays down ?

Answer 13

the cable is not connected

Question 14

What does administratively down means ?

Answer 14

the interface is shutdown

Question 15

Possible causes of problems with PPPoE

Answer 15

Failure in PPP negotiation process
Failure in PPP authentication process
Failure to adjust the TCP maximum segment size

Question 16

What is the size of MTU supported by PPPoE only?

Answer 16

1492 bytes

Question 17

Create a private network over a public network , usually the internet

Answer 17

VPN

Question 18

Benefits of VPN

Answer 18

Scalability
Cost Savings
Security

Question 19

Types of VPN

Answer 19

Site-to-site

Remote access

Question 20

Protocol used in VPN

Answer 20

Generic Routing Encapsulation (GRE)

Question 21

What is GRE?

Answer 21

non-secure, site-to-site VPN tunneling protocol, supports IP multicasting and default tunneling mode for cisco devices.

Question 22

Routing protocol in Branch connection

Answer 22

IGP & EGP

Question 23

Exchange routing information within a company network or an AS

Answer 23

IGP

Question 24

used for the exchange of routing information between AS , such as ISPs

Answer 24

EGP

Question 25

Routing protocol used between routers in the same AS

Answer 25

IBGP

Question 26

When to use BGP?

Answer 26

Used in multi-home environment (1 AS to Several AS)

Question 27

When not to use BGP?

Answer 27

In single-homed environment | Limited understanding of BGP

Question 28

Ways to implement BGP in a multi-homed environment

Answer 28

Default route only Default route and ISP Routes All internet Routes (Currently >550 000 networks worldwide)

Question 29

What are the three methods of establishing a VPN connection offered by Cisco devices?

Answer 29

GRE IPsec web-based SSL

Question 30

What equipment at the cable service provider office connects the office to the subscriber locations?

Answer 30

CMTS