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CompTIA N+ N10-006 > Modems, Hubs and VPN concentrators > Flashcards

Modems, Hubs and VPN concentrators Flashcards

1
Q

What is PSTN?

A

Public Switch Telephone Network

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2
Q

What is a Modem?

A

Translates between analogue and digital signals

PSTN to a computer

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3
Q

What is a Hub?

A

Layer 1 device that repeats information to all computers, only one computer can talk at a time

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4
Q

What is an older way to perform the function of VPN?

A

PSTN

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5
Q

What is a VPN?

A

Virtual Private Network

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6
Q

What are the benefits of using VPN?

A

Encryption (confidentiality)

Authentication (VPN concentrator to user)

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7
Q

What is a VPN concentrator?

A

Endpoint that supports all RA (remote access) VPN connections

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8
Q

What is IPSec tunnel vs transport mode?

A

Transport mode - Only payload data is encrypted

Tunnel mode - Entire packet including header is encrypted

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CompTIA N+ N10-006 (28 decks)

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