Which of the following are contained in the routing
updates of classless routing protocols? (Choose two.)
32-bit address
next hop router interface
subnet mask
unicast host address
Layer 2
address
2
Router1 and Router2 shown in the topology have been
configured with the no ip subnet-zero command. Which of the
following valid VLSM network numbers could be used for the
serial link between Router1 and Router2? (Choose two.)
192.168.1.0/30
192.168.1.4/30
192.168.1.8/30
192.168.1.96/30
192.168.1.138/30
192.168.1.190/30
3
What is the purpose of the network command used
in the configuration of the RIP routing protocol?
It specifies RIP v2 as the routing
protocol.
It enables the use of VLSM.
It specifies the fastest path to
the destination route.
It specifies which interfaces will
exchange RIP routing updates.
It activates RIP for all routes
that exist within the enterprise
network.
4
Which of the following is considered a limitation of
RIP v1?
RIP v1 does not send subnet mask
information in its updates.
RIP v1 is not widely supported by
networking hardware vendors.
RIP v1 consumes excessive bandwidth
by multicasting routing updates using a Class D address.
RIP v1 requires enhanced router
processors and extra RAM to function effectively.
RIP v1 does not support load
balancing across equal-cost paths.
RIP v1 authentication is
complicated and time-consuming to
configure.
5
Which command would a network administrator use to
determine if the routers in an enterprise have learned about a newly
added network?
router# show ip
address
router# show ip route
router# show ip
networks
router# show ip interface
brief
router# debug ip
protocol
router# debug rip
update
6
How does a router know of paths to destination
networks? (Choose two.)
inspection of the destination IP
address in data packets
ARP requests from connected
routers
manual configuration of
routes
updates from other routers
DHCP information broadcasts
updates from the SMTP management
information base
7
Which of the following statements are true regarding
RIP v1 and v2? (Choose three.)
Both RIP versions use hop
count.
Both RIP versions can provide
authentication of update sources.
Both RIP versions use 16 hops as a
metric for infinite distance.
RIP v1 uses split horizon to
prevent routing loops while RIP v2 does not.
RIP v1 uses hold-down times to
prevent routing loops while RIP v2 does not.
RIP v1 broadcasts routing table
updates, while RIP v2 multicasts its
updates.
8
What does VLSM allow a network administrator to
do?
utilize one subnet mask throughout
an autonomous system
utilize multiple subnet masks in
the same IP address space
utilize IGRP as the routing
protocol in an entire autonomous system
utilize multiple routing protocols
within an autonomous system
9
The network shown in the diagram is having problems
routing traffic. It is suspected that the problem is with the
addressing scheme. What is the problem with the addressing used in
the topology?
The address assigned to the
Ethernet0 interface of Router1 is a broadcast address for that
subnetwork.
The subnetwork configured on the
serial link between Router1 and Router2 overlaps with the subnetwork
assigned to Ethernet0 of Router3.
The subnetwork assigned to the
Serial0 interface of Router1 is on a different subnetwork from the
address for Serial0 of Router2.
The subnetwork assigned to
Ethernet0 of Router2 overlaps with the subnetwork assigned to
Ethernet0 of Router3.
10
Refer to the network shown. How will Router1 summarize
and advertise the four networks attached to its Ethernet
ports?
172.16.16.0/20
172.16.19.0/20
172.16.16.0/20 and
172.16.19.0/20
172.16.16.0/22
172.16.18.0/24
172.16.0.0/24
11
A Class C address has been assigned for use in the
network shown in the graphic. Using VLSM, which bit mask should be
used to provide for the number of host addresses required on Router
A, while wasting the fewest addresses?
/31
/30
/29
/28
/27
/26
12
The routers in the diagram use the subnet assignments
shown. What is the most efficient route summary that can be
configured on Router3 to advertise the internal networks to the
cloud?
192.1.1.0/26 and
192.1.1.64/27
192.1.1.128/25
192.1.1.0/23 and
192.1.1.64/23
192.1.1.0/24
192.1.1.0/25
192.1.1.0/24 and
192.1.1.64/24
13
A new network is to be configured on a router. Which
of the following tasks must be completed to configure this interface
and implement dynamic IP routing for the new network? (Choose
three.)
Select the routing protocol to be
configured.
Assign an IP address and subnet
mask to the interface.
Update the ip host configuration information with the device name and new interface IP
address.
Configure the routing protocol with
the new network IP address.
Configure the routing protocol with
the new interface IP address and subnet mask.
Configure the routing protocol in
use on all other enterprise routers with the new network
information.
14
What is the default network mask for a Class B
address?
255.0.0.0
255.255.0.0
255.255.255.0
255.255.255.255
15
How often does RIP v1 send routing table updates, by
default?
every 30 seconds
every 45 seconds
every 60 seconds
every 90
seconds
16
An additional subnet is required for a new Ethernet
link between Router1 and Router2 as shown in the diagram. Which of
the following subnet addresses can be configured in this network to
provide a maximum of 14 useable addresses for this link while
wasting the fewest addresses?
192.1.1.16/26
192.1.1.96/28
192.1.1.160/28
192.1.1.196/27
192.1.1.224/28
192.1.1.240/28
17
Which subnet mask is represented by the /21
notation?
255.255.224.0
255.255.248.0
255.255.252.0
255.255.240.0
18
Which of the following problems does VLSM help to
alleviate?
the shortage of IP addresses
the difficulty of assigning static
IP addresses to hosts in large enterprises
the complexity of implementing
advanced routing protocols such as OSPF and EIGRP
the shortage of network
administrators qualified in the use of RIP v1 and
IGRP
19
In the network shown in the graphic, three bits were
borrowed from the host portion of a Class C address. How many valid
host addresses will be unused on the three point-to-point links
combined if VLSM is not used?
3
4
12
36
84
180
20
A Class C network address has been subnetted into
eight subnetworks. Using VLSM, the last subnet will be divided into
eight smaller subnetworks. What bit mask must be used to create
eight smaller subnetworks, each having two usable host
addresses?
