S2/C2: WANS & Routers ONLINE CURRICULUM QUESTIONS

kindlyminnowNetworking and Communications

Oct 26, 2013 (3 years and 9 months ago)

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S2/C2

Online Curriculum Notes

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S2/C2: WANS & Routers

ONLINE CURRICULUM QUESTIONS


2.1.1

What OSI layers does a WAN
operate at?



What 3 things are WANS designed
to do?






List 4 WAN devices



2.1.2

Who usually provides the WAN
physical layer

protocols?



What do WAN Layer 2 protocols
describe?





Who is typically the DCE?




What is typically the DTE?




Name 4 Data Link Layer WAN
protocols (see graphic)




2.1.3

Is the plain old telephone service
packet
-
switched or circuit
-
switch
ed?



What is the maximum bandwidth rate for
BRI ISDN?



Is Frame Relay packet
-
switched or
circuit switched?



What’s the bandwidth of a T1 line?



What’s the bandwidth of an E1 line?



Who was xDSL designed for?



What causes bandwidth to decrease
in a xDSL line?





What’s a common bandwidth speed
景爠rn⁸䑓a楮 ?



What type of media was SONET
designed for?



How does SONET achieve high data
rates?






What’s the typical speed of a dial
-
異u
modem?†



Does a cable modem share the
same
cable as television signals?



What percentage of homes in the
US have coaxial cable?


S2/C2

Online Curriculum Notes

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What is the medium in a wireless
connection?


2.2.1

What are the four basic components
of a router and a computer?



What is a router dedicated to?



What sof
tware does a Cisco router
need to run configuration files?



What decision does a router make?






Where are routing tables stored?

Circle one

RAM/DRAM FLASH

NVRAM ROM


Where are packets held until they
are sent out of

the router?

RAM/DRAM FLASH

NVRAM ROM


Is RAM content lost when you power
down?



Where are a router’s startup config
files stored?

RAM/DRAM

FLASH


NVRAM

ROM


Is NV RAM content lost when yo
u
power down?



Where is the operating system
image stored?

RAM/DRAM FLASH



NVRAM ROM


Where are the power
-
on diagnostics
and a basic IOS stored?

RAM/DRAM FLASH

NVRAM

ROM


What is a network
connection where
packets enter and exit called?

Interface

2.2.2

What device is the backbone of the
internet?



What layer of the OSI model does a
router operate at?



How do routers select the best path and
switch packets?







How do routers learn
information about
other routers?


2.2.3

Is the Sem 2 topology connected to
the internet? Could it be?



What does redundant mean in WAN
design?



What four types of routers are used
on the Internet?









What Layer 3 protocol is almost
universall
y routed over the Internet?


S2/C2

Online Curriculum Notes

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