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ADV NWT > Branch Connection > Flashcards

Branch Connection Flashcards

1
Q

Provide high-speed connections over installed copper wires

A

DSL

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2
Q

Advantage of DSL

A

Each user has a separate direct connection to the DSLAM

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3
Q

Main broadband wireless technologies

A

Municipal Wi-Fi
Cellular/mobile
Satellite internet

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4
Q

Satellite

A

Expensive, Limited capacity per subscriber

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5
Q

Cellular/mobile

A

Coverage is often the isue

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6
Q

DSL

A

Limited bandwidth that is distance sensitive

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7
Q

Cable

A

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

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8
Q

Fiber-to-home

A

Requires fiber installation directly to the home

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9
Q

Wi-Fi Mesh

A

Most municipalities do not have a mesh network deployed

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10
Q

Creates a PPP tunnel over an Ethernet connection

A

PPPoE

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11
Q

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

A

Layer 1 Status (Physical)

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12
Q

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

A

Layer 2 Status (Data)

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13
Q

What happens if the protocol column displays down ?

A

the cable is not connected

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14
Q

What does administratively down means ?

A

the interface is shutdown

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15
Q

Possible causes of problems with PPPoE

A

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

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16
Q

What is the size of MTU supported by PPPoE only?

A

1492 bytes

17
Q

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

A

VPN

18
Q

Benefits of VPN

A

Scalability
Cost Savings
Security

19
Q

Types of VPN

A

Site-to-site

Remote access

20
Q

Protocol used in VPN

A

Generic Routing Encapsulation (GRE)

21
Q

What is GRE?

A

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

22
Q

Routing protocol in Branch connection

A

IGP & EGP

23
Q

Exchange routing information within a company network or an AS

A

IGP

24
Q

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

A

EGP

25
Q

Routing protocol used between routers in the same AS

A

IBGP

26
Q

When to use BGP?

A

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

27
Q

When not to use BGP?

A

In single-homed environment

Limited understanding of BGP

28
Q

Ways to implement BGP in a multi-homed environment

A

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

29
Q

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

A

GRE
IPsec
web-based SSL

30
Q

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

A

CMTS

ADV NWT (12 decks)

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