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32 Cards in this Set

  • Front
  • Back
WAN
connects multiple LANs over large geographic area.
WANs operate at which layers
physical and data
routers, CSU/DSU, modems and communication servers operate at what level
the physical layer
at what layer do protocols detemine how frames are carried between systems
Data link
A router can act as a LAN or a WAN device because it operates at which layer
Network
What are speciallized computers that use Cisco IOS software to run configuration files
Routers
Executes instructions in the operating system
CPU
Where do you store the routing tables?
RAM or DRAM
Provides storage for the starup configration file
NVRAM
Memory to hold the IOS
FLASH
Where is the POST
ROM
Connections to a PC or a modem
Interfaces
What are the 3 basic interfaces?
LAN, WAN, and management interfaces.
Management is used for?
Troubleshoooting and Router set up.
EIA-232 asynchronous serial port is
A console port
A router communicates with a LAN through?
Hub or a Switch
Router connects to a hub or switch with what kind of cable?
Straight through
The DTE is connected from the CPE to the?
Service provider through the DCE device
What is a modem or a CSU/DSU
A DCE device
What services are included in WAN
Leased lines, circuit-switched, or packet-switched
WANs often use common carriers such as?
telephone companies
They connect devices that are separated by wide geographical areas
WANs
to access bandwidth over large geographic areas WANs use various
serial connections
WANs provide for the exchange of data packets and frames between routers and switches and
the LANs they support
Routers offer services such as
Internetworking and WAN interface ports.
CSU/DSU
channel service units/digital service units
TA/NT1
Terminal Adapers/Network Termination 1
What do communication servers concentrate?
dial in and dial out user communication
ITU-T
International Telecommunication Union-Telecommunication Standardization Sector
ISO
Internation Organisation for Standardization
IETF
Internet Engineer Task Force
EIA
Electronic Industries Association.