Modems, Hubs and VPN concentrators Flashcards Preview

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

Flashcards in Modems, Hubs and VPN concentrators Deck (8)
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1

What is PSTN?

Public Switch Telephone Network

2

What is a Modem?

Translates between analogue and digital signals
PSTN to a computer

3

What is a Hub?

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

4

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

PSTN

5

What is a VPN?

Virtual Private Network

6

What are the benefits of using VPN?

Encryption (confidentiality)
Authentication (VPN concentrator to user)

7

What is a VPN concentrator?

Endpoint that supports all RA (remote access) VPN connections

8

What is IPSec tunnel vs transport mode?

Transport mode - Only payload data is encrypted
Tunnel mode - Entire packet including header is encrypted