Cisco Semester 2 Review
Chapter 12
12.1
What does RIP stand for?
Routing Information Protocol
12.2
What does IGRP stand for?
Interior Gateway Routing Protocol
12.3
What does the router do after
testing the hardware and loading
the Cisco IOS system image?
the router finds and applies the configuration
statements
12.4
What happens if the router is
unable to locate a valid
startup-config file?
It enters "set up" mode
12.5
The answers you give to set up
mode gives the router a sufficient
but minimal feature configuration
which includes what 5 things?





12.6
After you approve setup mode
in NVRAM as a new startup-config
entries, the router uses the entries
as a running configuration. Where
else is it stored?
12.7
Initially, before any entries are
made into a routing table, a router
can only see what?
its directly connected neighbors
12.8
What are the 3 different ways a
router learns paths to
destinations?



12.9
What are static routes?
manually defined by the system administrator as the
next hop to a destination; useful for security and traffic
reduction
12.10
What are default routes?
manually defined by the system administrator as the
path to take when there is no known route to the
destination
12.11
What is dynamic routing?
the router learns of paths to destinations by receiving
periodic updates from other routers.
12.12
What command is used to set up
a static route?
ip route
an inventory of interfaces
an opportunity to enter global parameters
an opportunity to enter interface parameters
a setup script review an opportunity to indicate
whether you want the router to use this
configuration
static routes
default routes
dynamic routing
12.13
What is an administrative
distance?
a rating of the trustworthiness of a routing information
source, expressed as a numeric value from 0 to 255
12.14
What administrative distance
value indicates the most
trustworthy routing information?
0
12.15
What administrative distance
value indicates the least
trustworthy routing information?
255
12.16
What is the default administrative
distance?
1
12.17
Where does the administrative
distance appear in an ip route
command?
at the very end
12.18
How does using a static route
conserve bandwidth?
Routing updates are not sent on a link if they are only
defined by a static route, therefore, they conserve
bandwidth.
12.19
What command establishes a
default route in networks using
dynamic routing protocols?
ip default-network
12.20
When is a default route used?
when an entry for a destination network does not exist
in a routing table
12.21
What the router command to
define a default route to network
200.100.50.75.
ip default-network 200.100.50.75
12.22
What does an autonomous
system consist of?
routers, run by one or more operators, that present a
consistent view of routing to the external world.
12.23
Who assigns a unique
autonomous system numbers to
enterprises?
The Network Information Center (NIC)
12.24
What is the difference between
exterior routing protocols and
interior routing protocols?
Exterior routing protocols are used for
communications between autonomous systems.
Interior routing protocols are used within a single
autonomous system.
12.25
List 4 examples of IP routing
protocols?




RIP
IGRP
OSPF
EIGRP
12.26
What does "OSPF" stand for?
Open Shortest Path First
12.27
What command starts a routing
processes?
router
12.28
Why is the network command
required?
The network command is required because it enables
the routing process to determine which interfaces will
participate in the sending and receiving of routing
updates.
12.29
List 4 key characteristics of RIP.




It is a distance-vector routing protocol.
Hop count is used as the metric for path
selection.
If the hop count is greater than 15,
the packet will be discarded.
By default, routing updates are broadcast every
30 seconds.
12.30
What must be true of all subnet
masks in when using RIP?
They must all be the same.
12.31
Refer to you answer to question
12.30. Why is that?
RIP does not share subnetting information in routing
updates.
12.32
Starting in privilege EXEC mode,
list the steps necessary to enable
RIP on a router and have it
communicate with one class A,
one class B, and one class C
network.
Router# config t
Router(config) router rip
Router(config-router) network 10.0.0.0
Router(config-router) network 176.76.0.0
Router(config-router) network 200.100.50.0
12.33
What router command displays
values, about routing timers and
network information, that are
associated with the entire router?
show ip protocol
12.34
What is a good use of the router
information from question 12.33?
Use this information to identify a router that you
suspect of delivering bad routing information
12.35
What is the default administrative
distance for RIP?
120
12.36
What command displays the
contents of the IP routing table?
show ip route
12.37
What is contained in an IP routing
table?
entries for all known networks and subnetworks, along
with a code that indicates how that information was
learned
12.38
What is the distance-vector
routing protocol developed by
Cisco?
IGRP
12.39
How often does IGRP send
routing updates?
Every 90 seconds.
12.40
List 3 IGRP key design
characteristics.


versatility that enables it to automatically
handle indefinite, complex topologies
flexibility for segments that have different
bandwidth and delay characteristics
scalability for functioning in very large networks

12.41
By default, which 2 metrics are
used by IGRP?


bandwidth
delay
12.42
IGRP can be configured to use a
combination of variables to
determine a composite metric.
List these variables.




bandwidth
delay
load
reliability
12.43
What extra piece of information is
required to set a router up for
IGRP instead of RIP?
an autonomous system number
12.44
Starting in privilege EXEC mode,
list the steps necessary to enable
IGRP on a router and have it
communicate with one class A,
one class B, and one class C
network.
Router# config t
Router(config) router igrp 29
Router(config-router) network 10.0.0.0
Router(config-router) network 176.76.0.0
Router(config-router) network 200.100.50.0
12.45
Which command displays
parameters, filters, and network
information about all of the routing
protocol(s) (i.e. RIP, IGRP, etc.) in
use on the router?
show ip protocols
12.46
What command displays the
status and global parameters
associated with all IP interfaces?
show ip interfaces
12.47
When doing show ip route, what is I the meaning of "I", "R", and "C"?
R C -
12.48
What command displays RIP
routing updates as they are sent
and received?
IGRP
RIP
Connected (Directly Connected Device)
debug ip rip
12.49
Why should you be careful with
debug commands?
Debug commands are processor intensive and can
decrease network performance or cause loss of
connectivity.
12.50
When should debug commands
be used?
Use only during times of low network usage
12.51
How do you disable debug?


no debug ip rip
no debug all
Name:_________________________________________
Cisco Semester 2 Review
Chapter 12
12.1
What does RIP stand for?
12.2
What does IGRP stand for?
12.3
What does the router do after
testing the hardware and loading
the Cisco IOS system image?
12.4
What happens if the router is
unable to locate a valid
startup-config file?
12.5
The answers you give to set up
mode gives the router a sufficient
but minimal feature configuration
which includes what 5 things?
12.6
After you approve setup mode
entries, the router uses the entries
as a running configuration. Where
else is it stored?
12.7
Initially, before any entries are
made into a routing table, a router
can only see what?
12.8
What are the 3 different ways a
router learns paths to
destinations?
12.9
What are static routes?
12.10
What are default routes?
12.11
What is dynamic routing?
12.12
What command is used to set up
a static route?
12.13
What is an administrative
distance?
12.14
What administrative distance
value indicates the most
trustworthy routing information?
12.15
What administrative distance
value indicates the least
trustworthy routing information?
12.16
What is the default administrative
distance?
12.17
Where does the administrative
distance appear in an ip route
command?
12.18
How does using a static route
conserve bandwidth?
12.19
What command establishes a
default route in networks using
dynamic routing protocols?
12.20
When is a default route used?
12.21
What the router command to
define a default route to network
200.100.50.75.
12.22
What does an autonomous
system consist of?
12.23
Who assigns a unique
autonomous system numbers to
enterprises?
12.24
What is the difference between
exterior routing protocols and
interior routing protocols?
12.25
List 4 examples of IP routing
protocols?
12.26
What does "OSPF" stand for?
12.27
What command starts a routing
processes?
12.28
Why is the network command
required?
12.29
List 4 key characteristics of RIP.
12.30
What must be true of all subnet
masks in when using RIP?
12.31
Refer to you answer to question
12.30. Why is that?
12.32
Starting in privilege EXEC mode,
list the steps necessary to enable
RIP on a router and have it
communicate with one class A,
one class B, and one class C
network.
12.33
What router command displays
values, about routing timers and
network information, that are
associated with the entire router?
12.34
What is a good use of the router
information from question 12.33?
12.35
What is the default administrative
distance for RIP?
12.36
What command displays the
contents of the IP routing table?
12.37
What is contained in an IP routing
table?
12.38
What is the distance-vector
routing protocol developed by
Cisco?
12.39
How often does IGRP send
routing updates?
12.40
List 3 IGRP key design
characteristics.
12.41
By default, which 2 metrics are
used by IGRP?
12.42
IGRP can be configured to use a
combination of variables to
determine a composite metric.
List these variables.
12.43
What extra piece of information is
required to set a router up for
IGRP instead of RIP?
12.44
Starting in privilege EXEC mode,
list the steps necessary to enable
IGRP on a router and have it
communicate with one class A,
one class B, and one class C
network.
12.45
Which command displays
parameters, filters, and network
information about all of the routing
protocol(s) (i.e. RIP, IGRP, etc.) in
use on the router?
12.46
What command displays the
status and global parameters
associated with all IP interfaces?
12.47
When doing show ip route, what is
the meaning of "I", "R", and "C"?
12.48
What command displays RIP
routing updates as they are sent
and received?
12.49
Why should you be careful with
debug commands?
12.50
When should debug commands
be used?
12.51
How do you disable debug?