Chapter 13: WAN Connectivity Flashcards
What does Dense Wavelength Division Multiplexing (DWDM) do?
It enables an individual single-mode fiber to carry multiple signals by giving each signal a different wavelength.
A single DWDM fiber can support ~150 signals.
A router feature that labels certain data to use a desired connection, and works with any type of packet switching to force certain types of data to use a certain path is called ____.
MPLS or Multiprotocol Label Switching
Where is an MPLS (Multiprotocol Label Switching) label added in the encapsulation process?
Between the Layer 2 header and the Layer 3 header.
What is a metro Ethernet network?
A secure, private network within a city using fiber-optic cabling. This is also called a metropolitan area network (MAN).
A business that leases direct connections to the Internet and in turn provides a public on-ramp (provider links) to the Internet is called a/an ____.
ISP or Internet Service Provider
A/An ____ is a high-speed Internet connection technology that uses a modem and a regular telephone line for connectivity.
DSL or Digital Subscriber Line
What does Symmetric DSL (SDSL) provide?
SDSL provides equal upload and download speeds and speeds up to 15 Mbps.
What does Asymmetric DSL (ADSL) provide?
ADSL provides different upload and download speeds. Its max download speed is 15 Mbps and max upload speed is 1 Mbps.
What is less expensive, ADSL or SDSL?
ADSL
For DSL and a plain old telephone service (POTS) to coexist, you need a ____ for the phone line installed.
DSL POTS filter
What protocol does DSL use, to require a user to log on with an account and a password to make the DSL connection?
PPPoE or Point-to-Point Protocol over Ethernet
What do broadband cable modems use for Internet connectivity and what are their max data speeds?
A coaxial cable is used for connection. The max downloading speed is 1.2 Gbps and the max uploading speed is 35 Mbps.
What protocol do cable modems use?
DOCSIS or Data Over Cable Service Interface Specification
Satellite access comes in two types:
one-way (download via satellite, upload via PSTN/dial-up)
two-way (download and upload via satellite)
Which last mile architecture enables fiber-to-the-home to connect the neighborhood switch to the premises?
PON (Passive Optical Network)
