CCNA 3 R&S: Scaling Networks

Question 1

Refer to the exhibit. A network administrator is attempting to upgrade the IOS system image on a Cisco 2901 router. After the new image has been downloaded and copied to the TFTP server, what command should be issued on the router before the IOS system image is upgraded on the router?
ping 10.10.10.1
dir flash:
ping 10.10.10.2
copy tftp: flash0:

Answer 1

ping 10.10.10.2

Question 2

Fill in the blank.

The ” ” area interconnects with all other OSPF area types.

Answer 2

backbone

Question 3

Which address is used by an IPv6 EIGRP router as the source for hello messages?

the interface IPv6 link-local address
the 32-bit router ID
the all-EIGRP-routers multicast address
the IPv6 global unicast address that is configured on the interface

Answer 3

the interface IPv6 link-local address*

Question 4

Refer to the exhibit. A network administrator issues the show ipv6 eigrp neighbors command. Which conclusion can be drawn based on the output?

The link-local addresses of neighbor routers interfaces are configured manually.
If R1 does not receive a hello packet from the neighbor with the link-local address FE80::5 in 2 seconds, it will declare the neighbor router is down.
R1 has two neighbors. They connect to R1 through their S0/0/0 and S0/0/1 interfaces.
The neighbor with the link-local address FE80::5 is the first EIGRP neighbor that is learned by R1.

Answer 4

The link-local addresses of neighbor routers interfaces are configured manually.

Question 5

Refer to the exhibit. Which two conclusions can be derived from the output? (Choose two.)

The network 192.168.10.8/30 can be reached through 192.168.11.1.
The reported distance to network 192.168.1.0/24 is 41024256.
Router R1 has two successors to the 172.16.3.0/24 network.
There is one feasible successor to network 192.168.1.8/30.
The neighbor 172.16.6.1 meets the feasibility condition to reach the 192.168.1.0/24 network.

Answer 5

The network 192.168.10.8/30 can be reached through 192.168.11.1.

There is one feasible successor to network 192.168.1.8/30.

Question 6

Refer to the exhibit. An administrator attempts to configure EIGRP for IPv6 on a router and receives the error message that is shown. Which command must be issued by the administrator before EIGRP for IPv6 can be configured?

eigrp router-id 100.100.100.100
no shutdown
ipv6 eigrp 100
ipv6 cef
ipv6 unicast-routing

Answer 6

ipv6 unicast-routing

Question 7

What two conditions have to be met in order to form a cluster that includes 5 access points? (Choose two.)
The APs must use different cluster names.
The APs must all be configured to use different radio modes.
At least two controllers are needed to form the cluster.
The APs have to be connected on the same network segment.
Clustering mode must be enabled on the APs.

Answer 7

The APs have to be connected on the same network segment.*

Question 8

Which technological factor determines the impact of a failure domain?

the forwarding rate of the switches used on the access layer
the number of layers of the hierarchical network
the role of the malfunctioning device
the number of users on the access layer

Answer 8

the role of the malfunctioning device*

Question 9

Which mode configuration setting would allow formation of an EtherChannel link between switches SW1 and SW2 without sending negotiation traffic?

SW1: desirable
SW2: desirable

SW1: passive
SW2: active

SW1: on
SW2: on

SW1: auto
SW2: auto
trunking enabled on both switches

SW1: auto
SW2: auto
PortFast enabled on both switches

Answer 9

SW1: on
SW2: on*

Question 10

In a large enterprise network, which two functions are performed by routers at the distribution layer? (Choose two.)

provide Power over Ethernet to devices
provide a high-speed network backbone
connect remote networks
connect users to the network
provide data traffic security

Answer 10

connect remote networks*

provide data traffic security*

Question 11

A network engineer is implementing security on all company routers. Which two commands must be issued to force authentication via the password 1C34dE for all OSPF-enabled interfaces in the backbone area of the company network? (Choose two.)

area 0 authentication message-digest
ip ospf message-digest-key 1 md5 1C34dE
username OSPF password 1C34dE
enable password 1C34dE
area 1 authentication message-digest

Answer 11

area 0 authentication message-digest*

ip ospf message-digest-key 1 md5 1C34dE*

Question 12

When does an OSPF router become an ABR?

when the router is configured as an ABR by the network administrator
when the router has interfaces in different areas
when the router has an OSPF priority of 0
when the router has the highest router ID

Answer 12

when the router has interfaces in different areas

Question 13

Which characteristic would most influence a network design engineer to select a multilayer switch over a Layer 2 switch?

ability to have multiple forwarding paths through the switched network based on VLAN number(s)
ability to aggregate multiple ports for maximum data throughput
ability to build a routing table
ability to provide power to directly-attached devices and the switch itself

Answer 13

ability to build a routing table

Question 14

A network designer is considering whether to implement a switch block on the company network. What is the primary advantage of deploying a switch block?

A single core router provides all the routing between VLANs.
This is network application software that prevents the failure of a single network device.
The failure of a switch block will not impact all end users.
This is a security feature that is available on all new Catalyst switches.

Answer 14

The failure of a switch block will not impact all end users.

Question 15

A network administrator enters the spanning-tree portfast bpduguard default command. What is the result of this command being issued on a Cisco switch?

Any switch port will be error-disabled if it receives a BPDU.
Any switch port that has been configured with PortFast will be error-disabled if it receives a BPDU.
Any trunk ports will be allowed to connect to the network immediately, rather than waiting to converge.
Any switch port that receives a BPDU will ignore the BPDU message.

Answer 15

Any switch port that has been configured with PortFast will be error-disabled if it receives a BPDU.

Question 16

What are two differences between the Cisco IOS 12 and IOS 15 versions? (Choose two.)

Every Cisco ISR G2 platform router includes a universal image in the IOS 12 versions, but not the IOS 15 versions.

The IOS version 15 license key is unique to each device, whereas the IOS version 12 license key is not device specific.

The IOS 12 version has two trains that occur simultaneously, whereas the IOS 15 version still has two trains, but the versions occur in a single sequential order.

The IOS 12 version has commands that are not available in the 15 version.

IOS version 12.4(20)T1 is a mainline release, whereas IOS version 15.1(1)T1 is a new feature release.

Answer 16

The IOS version 15 license key is unique to each device, whereas the IOS version 12 license key is not device specific.

IOS version 12.4(20)T1 is a mainline release, whereas IOS version 15.1(1)T1 is a new feature release.

Question 17

Refer to the exhibit. What are two results of issuing the displayed commands on S1, S2, and S3? (Choose two.)

S3 can be elected as a secondary bridge.
S2 can become root bridge if S3 fails.
S1 will automatically adjust the priority to be the lowest.
S2 can become root bridge if S1 fails.
S1 will automatically adjust the priority to be the highest.

Answer 17

S1 will automatically adjust the priority to be the lowest.*

S2 can become root bridge if S1 fails.*

Question 18

A remote classroom can successfully access video-intensive streaming lectures via wired computers. However, when an 802.11n wireless access point is installed and used with 25 wireless laptops to access the same lectures, poor audio and video quality is experienced. Which wireless solution would improve the performance for the laptops?

Upgrade the access point to one that can route.
Decrease the power of the wireless transmitter.
Adjust the wireless NICs in the laptops to operate at 10GHz to be compatible with 802.11n.
Add another access point.

Answer 18

Add another access point.*

Question 19

A network engineer is troubleshooting a single-area OSPFv3 implementation across routers R1, R2, and R3. During the verification of the implementation, it is noted that the routing tables on R1 and R2 do not include the entry for a remote LAN on R3. Examination of R3 shows the following:

that all interfaces have correct addressing
that the routing process has been globally configured
that correct router adjacencies have formed
What additional action taken on R3 could solve the problem?

Force DR/BDR elections to occur where required.
Use the network command to configure the LAN network under the global routing process.
Enable the OSPFv3 routing process on the interface connected to the remote LAN.
Restart the OPSFv3 routing process.

Answer 19

Enable the OSPFv3 routing process on the interface connected to the remote LAN.

Question 20

When should EIGRP automatic summarization be turned off?

when a network addressing scheme uses VLSM
when a router has more than three active interfaces
when a network contains discontiguous network addresses
when a router has less than five active interfaces
when a router has not discovered a neighbor within three minutes

Answer 20

when a network contains discontiguous network addresses

Question 21

When will a router that is running EIGRP put a destination network in the active state?

when the EIGRP domain is converged
when there is outgoing traffic toward the destination network
when the connection to the successor of the destination network fails and there is no feasible successor available
when there is an EIGRP message from the successor of the destination network

Answer 21

when the connection to the successor of the destination network fails and there is no feasible successor available

Question 22

Which action should be taken when planning for redundancy on a hierarchical network design?

add alternate physical paths for data to traverse the network
continually purchase backup equipment for the network
immediately replace a non-functioning module, service or device on a network
implement STP portfast between the switches on the network

Answer 22

continually purchase backup equipment for the network

Question 23

Fill in the blank. Use the acronym.

Which encryption protocol is used by the WPA2 shared key authentication technique? ” ”

Answer 23

AES

Question 24

Refer to the exhibit. When the show ip ospf neighbor command is given from the R1# prompt, no output is shown. However, when the show ip interface brief command is given, all interfaces are showing up and up. What is the most likely problem?

R1 has not sent a default route down to R2 by using the default-information originate command.
R2 has not brought the S0/0/1 interface up yet.
R1 or R2 does not have a network statement for the 172.16.100.0 network.
The ISP has not configured a static route for the ABC Company yet.
R1 or R2 does not have a loopback interface that is configured yet

Answer 24

R1 or R2 does not have a network statement for the 172.16.100.0 network.

Question 25

Refer to the exhibit. If router B is to be configured for EIGRP AS 100, which configuration must be entered?

B(config-router)# network 192.168.10.4 0.0.0.3
B(config-router)# network 192.168.10.8 0.0.0.3
B(config-router)# network 192.168.10.64 0.0.0.63
B(config-router)# network 192.168.10.128 0.0.0.63
B(config-router)# network 192.168.10.192 0.0.0.63

B(config-router)# network 192.168.10.4 255.255.255.248
B(config-router)# network 192.168.10.8 255.255.255.248
B(config-router)#network 192.168.10.128 255.255.255.192

B(config-router)# network 192.168.10.0 255.255.255.0

B(config-router)# network 192.168.10.0 0.0.0.255

B(config-router)# network 192.168.10.4 0.0.0.3
B(config-router)# network 192.168.10.8 0.0.0.3
B(config-router)#network 192.168.10.128 0.0.0.63

B(config-router)# network 192.168.10.4 0.0.0.3
B(config-router)# network 192.168.10.8 0.0.0.3

Answer 25

B(config-router)# network 192.168.10.4 0.0.0.3
B(config-router)# network 192.168.10.8 0.0.0.3
B(config-router)#network 192.168.10.128 0.0.0.63

Question 26

Refer to the exhibit. A network technician is troubleshooting missing OSPFv3 routes on a router. What is the cause of the problem based on the command output?

The local router has formed complete neighbor adjacencies, but must be in a 2WAY state for the router databases to be fully synchronized.
The neighbor IDs are incorrect. The interfaces must use only IPv6 addresses to ensure fully synchronized routing databases.
The dead time must be higher than 30 for all routers to form neighbor adjacencies.
There is a problem with the OSPFv3 adjacency between the local router and the router that is using the neighbor ID 2.2.2.2.

Answer 26

There is a problem with the OSPFv3 adjacency between the local router and the router that is using the neighbor ID 2.2.2.2.

Question 27

Refer to the exhibit. Which two conclusions can be drawn from the output? (Choose two.)

The bundle is fully operational.
The port channel is a Layer 3 channel.
The EtherChannel is down.
The port channel ID is 2.
The load-balancing method used is source port to destination port

Answer 27

The EtherChannel is down.

The port channel ID is 2.

Question 28

Refer to the exhibit. Based on the command output shown, what is the status of the EtherChannel?

The EtherChannel is dynamic and is using ports Fa0/10 and Fa0/11 as passive ports.
The EtherChannel is in use and functional as indicated by the SU and P flags in the command output.
The EtherChannel is down as evidenced by the protocol field being empty.
The EtherChannel is partially functional as indicated by the P flags for the FastEthernet ports.

Answer 28

The EtherChannel is in use and functional as indicated by the SU and P flags in the command output.

Question 29

A network engineer is configuring a LAN with a redundant first hop to make better use of the available network resources. Which protocol should the engineer implement?

FHRP
VRRP
GLBP
HSRP

Answer 29

GLBP

Question 30

Users on an IEEE 801.11n network are complaining of slow speeds. The network administrator checks the AP and verifies it is operating properly. What can be done to improve the wireless performance in the network?

Split the wireless traffic between the 802.11n 2.4 GHz band and the 5 GHz band.
Set the AP to mixed mode.
Change the authentication method on the AP.
Switch to an 802.11g AP.

Answer 30

Split the wireless traffic between the 802.11n 2.4 GHz band and the 5 GHz band.

Question 31

A network administrator is troubleshooting slow performance in a Layer 2 switched network. Upon examining the IP header, the administrator notices that the TTL value is not decreasing. Why is the TTL value not decreasing?

This is the normal behavior for a Layer 2 network.
The VLAN database is corrupt.
The MAC address table is full.
The inbound interface is set for half duplex.

Answer 31

This is the normal behavior for a Layer 2 network.

Question 32

What is a wireless modulation technique used by 802.11 WLAN standards that can implement MIMO?

FHSS
OFDM
BSS
DSSS

Answer 32

OFDM

Question 33

Which technology is an open protocol standard that allows switches to automatically bundle physical ports into a single logical link?

Multilink PPP
PAgP
DTP
LACP

Answer 33

LACP

Question 34

A set of switches is being connected in a LAN topology. Which STP bridge priority value will make it least likely for the switch to be selected as the root?

32768
4096
65535
61440

Answer 34

61440

Question 35

Which wireless network topology is being configured by a technician who is installing a keyboard, a mouse, and headphones, each of which uses Bluetooth?

ad hoc mode
hotspot
mixed mode
infrastructure mode

Answer 35

ad hoc mode

Question 36

Refer to the exhibit. Which route or routes will be advertised to the router ISP if autosummarization is enabled?

10. 0.0.0/8
11. 1.0.0/16
12. 1.0.0/28
13. 1.1.0/24
14. 1.2.0/24
15. 1.3.0/24
16. 1.4.0/28

Answer 36

10.0.0.0/8

Question 37

When are EIGRP update packets sent?

only when necessary
every 30 seconds via broadcast
every 5 seconds via multicast
when learned routes age out

Answer 37

only when necessary

Question 38

Which requirement should be checked before a network administrator performs an IOS image upgrade on a router?

The old IOS image file has been deleted.
The FTP server is operational.
There is sufficient space in flash memory.
The desired IOS image file has been downloaded to the router.

Answer 38

There is sufficient space in flash memory.

Question 39

What method of wireless authentication is dependent on a RADIUS authentication server?

WPA Personal
WEP
WPA2 Enterprise
WPA2 Personal

Answer 39

WPA2 Enterprise

Question 40

A network administrator wants to verify the default delay values for the interfaces on an EIGRP-enabled router. Which command will display these values?

show running-config
show interfaces
show ip protocols
show ip route

Answer 40

show interfaces

Question 41

A network administrator in a branch office is configuring EIGRP authentication between the branch office router and the headquarters office router. Which security credential is needed for the authentication process?

a randomly generated key with the crypto key generate rsa command
a common key configured with the key-string command inside a key chain
the username and password configured on the headquarters office router
the hostname of the headquarters office router and a common password

Answer 41

a common key configured with the key-string command inside a key chain

Question 42

Refer to the exhibit. Interface FastEthernet 0/1 on S1 is connected to Interface FastEthernet 0/1 on S2, and Interface FastEthernet 0/2 on S1 is connected to Interface FastEthernet 0/2 on S2. What are two errors in the present EtherChannel configurations? (Choose two.)

Desirable mode is not compatible with on mode.
The trunk mode is not allowed for EtherChannel bundles.
Two auto modes cannot form a bundle.
The channel group is inconsistent.
The interface port channel ID should be different in both switches.

Answer 42

Two auto modes cannot form a bundle.

The channel group is inconsistent.

Question 43

Which port role is assigned to the switch port that has the lowest cost to reach the root bridge?

disabled port
root port
designated port
non-designated port

Answer 43

root port

Question 44

What are two features of OSPF interarea route summarization? (Choose two.)

ASBRs perform all OSPF summarization.
Routes within an area are summarized by the ABR.
Route summarization results in high network traffic and router overhead.
ABRs advertise the summarized routes into the backbone.
Type 3 and type 5 LSAs are used to propagate summarized routes.

Answer 44

Routes within an area are summarized by the ABR.

ABRs advertise the summarized routes into the backbone.

Question 45

Launch PT Hide and Save PT

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.

Which message was displayed on the web server?

Work done!
Congratulations!
Wonderful work!
You’ve made it!

Answer 45

You’ve made it!

Question 46

Refer to the exhibit. What two pieces of information could be determined by a network administrator from this output? (Choose two.)

The metric that will be installed in the routing table for the 10.0.0.0 route will be 65 (64+1).
Interface Fa0/1 is not participating in the OSPF process.
R1 is the distribution point for the routers that are attached to the 10.0.0.4 network.
R1 is participating in multiarea OSPF.
The OSPF process number that is being used is 0.

Answer 46

R1 is the distribution point for the routers that are attached to the 10.0.0.4 network.

R1 is participating in multiarea OSPF.

Question 47

A network administrator has configured an EtherChannel between two switches that are connected via four trunk links. If the physical interface for one of the trunk links changes to a down state, what happens to the EtherChannel?

Spanning Tree Protocol will recalculate the remaining trunk links.
The EtherChannel will remain functional.
The EtherChannel will transition to a down state.
Spanning Tree Protocol will transition the failed physical interface into forwarding mode.

Answer 47

The EtherChannel will remain functional.

Question 48

Refer to the exhibit. Which destination MAC address is used when frames are sent from the workstation to the default gateway?

MAC addresses of both the forwarding and standby routers
MAC address of the standby router
MAC address of the virtual router
MAC address of the forwarding router

Answer 48

MAC address of the virtual router

Question 49

Refer to the exhibit. A company has migrated from single area OSPF to multiarea. However, none of the users from network 192.168.1.0/24 in the new area can be reached by anyone in the Branch1 office. From the output in the exhibit, what is the problem?

There are no interarea routes in the routing table for network 192.168.1.0.
The OSPF routing process is inactive.
The router has not established any adjacencies with other OSPF routers.
The link to the new area is down.

Answer 49

There are no interarea routes in the routing table for network 192.168.1.0.

Question 50

Refer to the exhibit. A company has migrated from single area OSPF to multiarea. However, none of the users from network 192.168.1.0/24 in the new area can be reached by anyone in the Branch1 office. From the output in the exhibit, what is the problem?

There are no inter area routes in the routing table for network 192.168.1.0.
The OSPF routing process is inactive.
The router has not established any adjacencies with other OSPF routers.
The link to the new area is down.

Answer 50

There are no inter area routes in the routing table for network 192.168.1.0.

Question 51

Refer to the exhibit. A company has migrated from single area OSPF to multiarea. However, none of the users from network 192.168.1.0/24 in the new area can be reached by anyone in the Branch1 office. From the output in the exhibit, what is the problem?

There are no interarea routes in the routing table for network 192.168.1.0.
The OSPF routing process is inactive.
The router has not established any adjacencies with other OSPF routers.
The link to the new area is down.

Answer 51

There are no interarea routes in the routing table for network 192.168.1.0.

Question 52

What are two requirements when using out-of-band configuration of a Cisco IOS network device? (Choose two.)

Telnet or SSH access to the device
a connection to an operational network interface on the device
a direct connection to the console or AUX port
a terminal emulation client
HTTP access to the device

Answer 52

a direct connection to the console or AUX port

a terminal emulation client

Question 53

For troubleshooting missing EIGRP routes on a router, what three types of information can be collected using the show ip protocols command? (Choose three.)

any interfaces on the router that are configured as passive
any ACLs that are affecting the EIGRP routing process
any interfaces that are enabled for EIGRP authentication
networks that are unadvertised by the EIGRP routing protocol
the local interface that is used to establish an adjacency with EIGRP neighbors
the IP addresses that are configured on adjacent routers

Answer 53

any interfaces on the router that are configured as passive
any ACLs that are affecting the EIGRP routing process
the IP addresses that are configured on adjacent routers

Question 54

What are two requirements to be able to configure an EtherChannel between two switches? (Choose two.)

All the interfaces need to work at the same speed.
All interfaces need to be assigned to different VLANs.
The interfaces that are involved need to be contiguous on the switch.
All the interfaces need to be working in the same duplex mode.
Different allowed ranges of VLANs must exist on each end.

Answer 54

All the interfaces need to be working in the same duplex mode.
All the interfaces need to work at the same speed.

Question 55

At a local college, students are allowed to connect to the wireless network without using a password. Which mode is the access point using?

network
shared-key
open
passive

Answer 55

open

Question 56

What are three access layer switch features that are considered when designing a network? (Choose three.)

broadcast traffic containment
forwarding rate
failover capability
Power over Ethernet
speed of convergence
port density

Answer 56

forwarding rate
Power over Ethernet
port density

Question 57

Refer to the exhibit. What can be concluded about network 192.168.1.0 in the R2 routing table?

This network has been learned from an internal router within the same area.
This network was learned through summary LSAs from an ABR.
This network is directly connected to the interface GigabitEthernet0/0.
This network should be used to forward traffic toward external networks.

Answer 57

This network was learned through summary LSAs from an ABR.

Question 58

Which two statements are correct about EIGRP acknowledgment packets? (Choose two.)

The packets are sent as unicast.
The packets are unreliable.
The packets are used to discover neighbors that are connected on an interface.
The packets require confirmation.
The packets are sent in response to hello packets.

Answer 58

The packets are sent as unicast.

The packets are unreliable.

Question 59

An STP instance has failed and frames are flooding the network. What action should be taken by the network administrator?

Broadcast traffic should be investigated and eliminated from the network.
Spanning tree should be disabled for that STP instance until the problem is located.
Redundant links should be physically removed until the STP instance is repaired.
A response from the network administrator is not required because the TTL field will eventually stop the frames from flooding the network.

Answer 59

Redundant links should be physically removed until the STP instance is repaired.

Question 60

A network administrator issues the command R1(config)# license boot module c1900 technology-package securityk9 on a router. What is the effect of this command?

The IOS will prompt the user to provide a UDI in order to activate the license.
The IOS will prompt the user to reboot the router.
The features in the Security package are available immediately.
The Evaluation Right-To-Use license for the Security technology package is activated.

Answer 60

The Evaluation Right-To-Use license for the Security technology package is activated.

Question 61

A router has been removed from the network for maintenance. A new Cisco IOS software image has been successfully downloaded to a server and copied into the flash of the router. What should be done before placing the router back into service?

Delete the previous version of the Cisco IOS software from flash.
Copy the running configuration to NVRAM.
Back up the new image.
Restart the router and verify that the new image starts successfully.

Answer 61

Restart the router and verify that the new image starts successfully.

Question 62

What are the two methods that are used by a wireless NIC to discover an AP? (Choose two.)

receiving a broadcast beacon frame
delivering a broadcast frame
transmitting a probe request
sending an ARP request
initiating a three-way handshak

Answer 62

transmitting a probe request

receiving a broadcast beacon frame

Question 63

Refer to the exhibit. Why did R1 and R2 not establish ad adjacency?

The link-local address must be the same on both routers.

The AS number must be the same on R1 and R2.

R1 S0/0/0 and R2 S0/0/0 are on different networks.

The no shutdown command is misapplied on both routers.

The router ID must be the same on both routers.

Answer 63

The AS number must be the same on R1 and R2.

Question 64

Refer to the exhibit. Router CiscoVille has been partially configured for EIGRP authentication. What is missing that would allow successful authentication between EIGRP neighbors?

The interfaces that will use EIGRP authentication must be specified.

The CiscoVIlle router requires a second keychain to function correctly when using two interfaces for EIGRP authentication.

The same key number must be used on any EIGRP neighbor routers.

The keychain for EIGRP authentication must be configured on the interfaces.

Answer 64

The keychain for EIGRP authentication must be configured on the interfaces.

Question 65

Which Cisco IOS Software Release 15.0 technology pack is shipped with a permanent license on all Cisco ISR G2 devices?

IPBase

DATA

Unified Communications

Security

Answer 65

IPBase

Question 66

67. By default, how many equal cost routes to the same destination can be installed in the routing table of a Cisco router?
2
4
16
32

Answer 66

4

Question 67

What are two reasons to implement passive interfaces in the EIGRP configuration of a Cisco router? (Choose two.)

to provide increased network security

to shut down unused interfaces

to exclude interfaces from load balancing

to mitigate attacks coming from the interfaces

to avoid unnecessary update traffic

Answer 67

to provide increased network security

to avoid unnecessary update traffic

Question 68

What is a difference between the Cisco IOS 12 and IOS 15 versions?

The IOS 12 version has commands that are not available in the 15 version.

IOS version 12.4(20)T1 is a mainline release, whereas IOS version 15.1(1)T1 is a new feature release.

The IOS version 15 license key is unique to each device, whereas the IOS version 12 license key is not device specific.

Every Cisco ISR G2 platform router includes a universal image in the IOS 12 versions, but not the IOS 15 versions.

Answer 68

IOS version 12.4(20)T1 is a mainline release, whereas IOS version 15.1(1)T1 is a new feature release.

Question 69

A WLAN user wants to allocate an optimal amount of bandwidth to a specific online game. What is a Linksys Smart Wi-Fi tool that will allow the user to do this?

Widgets

Speed Test

Media Prioritization

Bandwidth Prioritization

Answer 69

Bandwidth Prioritization

Question 70

When a Cisco router is configured with fast-switching, how are packets distributed over equal-cost paths?

on a per-path-load basis

on a per-destination basis

on a per-interface basis

on a per-packet basis

Answer 70

on a per-destination basis

Question 71

A network administrator is analyzing first-hop router redundancy protocols. What is a characteristic of VRRPv3?

VRRPv3 is Cisco proprietary.

It supports IPv6 and IPv4 addressing.

It allows load balancing between routers.

It works together with HSRP.

Answer 71

It supports IPv6 and IPv4 addressing.

Question 72

Which two channel group modes would place an interface in a negotiating state using PAgP? (Choose two.)
auto 
desirable 
on
passive
active

Answer 72

auto

desirable

Question 73

What is the purpose of the Cisco PAK?
It is a proprietary encryption algorithm.
It is a compression file type used when installing IOS 15 or an IOS upgrade.
It is a way to compress an existing IOS so that a newer IOS version can be co-installed on a router.
It is a key for enabling an IOS feature set.

Answer 73

It is a key for enabling an IOS feature set.

Question 74

What two license states would be expected on a new Cisco router once the license has been activated? (Choose two.)
License State: On
License State: Active, Registered
License Type: Permanent 
License Type: ipbasek9
License Type: Temporary
License State: Active, In Use

Answer 74

License Type: Permanent

License State: Active, In Use

Question 75

If a company wants to upgrade a Cisco 2800 router from IOS 12.4T, what IOS should be recommended for a stable router platform?

13. 1T
14. 5T
15. 1M
16. 0

Answer 75

15.1M

Question 76

Fill in the blank.

EIGRP keeps feasible successor routes in the “ ” table.

Answer 76

topology

Question 77

A network engineer is troubleshooting a newly deployed wireless network that is using the latest 802.11 standards. When users access high bandwidth services such as streaming video, the wireless network performance is poor. To improve performance the network engineer decides to configure a 5 Ghz frequency band SSID and train users to use that SSID for streaming media services. Why might this solution improve the wireless network performance for that type of service?
Requiring the users to switch to the 5 GHz band for streaming media is inconvenient and will result in fewer users accessing these services.
The 5 GHz band has a greater range and is therefore likely to be interference-free.
The 5 GHz band has more channels and is less crowded than the 2.4 GHz band, which makes it more suited to streaming multimedia.
The only users that can switch to the 5 GHz band will be those with the latest wireless NICs, which will reduce usage.

Feel free to correct me if I’m wrong.

Answer 77

The 5 GHz band has more channels and is less crowded than the 2.4 GHz band, which makes it more suited to streaming multimedia.

Question 78

What type of OSPF IPv4 route is indicated by a route table entry descriptor of O E1?
an intra-area route that is advertised by the DR
a summary route that is advertised by an ABR
a directly connected route that is associated with an Ethernet interface
an external route that is advertised by an ASBR

Answer 78

an external route that is advertised by an ASBR

Question 79

A network administrator is analyzing the features that are supported by different first-hop router redundancy protocols. Which statement is a feature that is associated with GLBP?
It uses a virtual router master.
GLBP allows load balancing between routers.
It works together with VRRP.
It is nonproprietary.

Answer 79

GLBP allows load balancing between routers.

Question 80

A network administrator is analyzing the features that are supported by different first-hop router redundancy protocols. Which statement describes a feature that is associated with HSRP?
HSRP uses active and standby routers.
HSRP is nonproprietary.
It uses ICMP messages in order to assign the default gateway to hosts.
It allows load balancing between a group of redundant routers.

Answer 80

HSRP uses active and standby routers.

Question 81

What is the purpose of a Cisco IOS 15 EM release?

It specifies advanced IP services features such as advanced security and service provider packages.

It provides regular bug fix maintenance rebuilds, plus critical fix support for network-affecting bugs.

It is used for long-term maintenance, enabling customers to qualify, deploy, and remain on the release for an extended period.

It provides premium packages and enables additional IOS software feature combinations that address more complex network requirements.

Answer 81

It is used for long-term maintenance, enabling customers to qualify, deploy, and remain on the release for an extended period.

Question 82

A network administrator is analyzing first -hop router redundancy protocols.What is characteristic of VRRPv3.
characteristics of VRRPV3:
INTEROPERABILITY IN MULTI-VENDOR ENVIRONMENTS
VRRPv3 SUPPORTS USAGE OF IPv4 and IPv6
IMPROVE SCALABILITY THROUGH USE OF VRRS PATHWAYS*
so judging from the options given it will be supports both IPv6 and IPv4 addressing

Answer 82

INTEROPERABILITY IN MULTI-VENDOR ENVIRONMENTS

VRRPv3 SUPPORTS USAGE OF IPv4 and IPv6

Question 83

What are two methods to make the OSPF routing protocol more secure? (Choose two.)
Use only OSPFv3.
Use MD5 authentication.
When feasible, create a VPN tunnel between each OSPF neighbor adjacency.
Use the enable secret command.
Use the passive-interface command on LAN interfaces that are connected only to end-user devices.

Answer 83

Use the passive-interface command on LAN interfaces that are connected only to end-user devices.
Use MD5 authentication.

Question 84

Which function is provided by EtherChannel?
enabling traffic from multiple VLANs to travel over a single Layer 2 link
dividing the bandwidth of a single link into separate time slots
creating one logical link by using multiple physical links between two LAN switches
spreading traffic across multiple physical WAN links

Answer 84

creating one logical link by using multiple physical links between two LAN switches

Question 85

.Which two parameters does EIGRP use by default to calculate the best path? (Choose two.)
transmit and receive load
delay
MTU
bandwidth
reliability

Answer 85

bandwidth

delay

Question 86

Which wireless encryption method is the most secure?
WPA
WPA2 with AES 
WPA2 with TKIP
WEP

Answer 86

WPA2 with AES

Question 87

What occurs when authentication is configured on an EIGRP router?
After EIGRP authentication has been configured, the router must be rebooted to be able to reestablish adjacencies.
If adjacencies are displayed after the use of the show ipv6 eigrp neighbors command, then EIGRP authentication was successful.
Only one router is required to be configured for EIGRP authentication.
If only one router has been configured for EIGRP authentication, any prior adjacencies will remain intact.

Answer 87

If adjacencies are displayed after the use of the show ipv6 eigrp neighbors command, then EIGRP authentication was successful.

Question 88

An administrator issues the router eigrp 100 command on a router. What is the number 100 used for?

as the maximum bandwidth of the fastest interface on the router
as the autonomous system number
as the length of time this router will wait to hear hello packets from a neighbor
as the number of neighbors supported by this router

Answer 88

as the autonomous system number

Question 89

Refer to the exhibit. What are the possible port roles for ports A, B, C and D in this RSTP-enabled network?

alternate, root, designated, root

designated, root, alternate, root

alternate, designated, root, root

designated, alternate, root, root

Answer 89

alternate, designated, root, root

Question 90

Refer to the exhibit. A network administrator is configuring PVST+ for the three switches.

What will be a result of entering these commands?

S2 will set the priority value for VLAN 10 to 24576

S1 will set the priority value for VLAN 20 to 24596

S3 will set the priority value for VLAN 30 to 8192

S1 will set the priority value for VLAN 10 to 0

Answer 90

S3 will set the priority value for VLAN 30 to 8192

Question 91

What are two drawbacks to turning spanning tree off and having multiple paths through the Layer 2 switch network? (Choose two.)

Broadcast frames are transmitted indefinitely.

Port security shuts down all of the port that attached devices.

The switch acts like a hub.

The Mac address table becomes unstable.

Port security becomes unstable.

Answer 91

Broadcast frames are transmitted indefinitely.

The Mac address table becomes unstable.

Question 92

Which two conditions should the network administrator verify before attempting to upgrade a Cisco IOS image using a TFTP server? (Choose two.)
Verify connectivity between the router and TFTP server using the ping command.
Verify that there is enough flash memory for the new Cisco IOS image using the show flash command.
Verify the name of the TFTP server using the show hosts command.
Verify that the TFTP server is running using the tftpdnld command.
Verify that the checksum for the image is valid using the show version command.

Answer 92

Verify connectivity between the router and TFTP server using the ping command.
Verify that there is enough flash memory for the new Cisco IOS image using the show flash command.

Question 93

What is the function of STP in a scalable network?
It combines multiple switch trunk links to act as one logical link for increased bandwidth.
It decreases the size of the failure domain to contain the impact of failures.
It protects the edge of the enterprise network from malicious activity.
It disables redundant paths to eliminate Layer 2 loops.

Answer 93

It disables redundant paths to eliminate Layer 2 loops.

Question 94

Refer to the exhibit. Which switch will be the root bridge after the election process is complete?
S1
S2
S3
S4

Answer 94

S2

Question 95

What is a requirement to configure a trunking EtherChannel between two switches?

The participating interfaces must be on the same module on a switch.

The participating interfaces must be physically contiguous on a switch.

The participating interfaces must be assigned the same VLAN number on both switches.

The allowed range of VLANs must be the same on both switches.

Answer 95

The participating interfaces must be assigned the same VLAN number on both switches.

Question 96

Which type of OSPF LSA represents an external route and is propagated across the entire OSPF domain?
type 1
type 2
type 3
type 4
type 5

Answer 96

type 5

Question 97

What should be installed on a Cisco router as a prerequisite for installing the Data, Security, and Unified Communications licenses in IOS 15?

the IP Base license

the Cisco License Manager

the Enterprise Services package

the Enterprise Base license

Answer 97

the IP Base license

Question 98

After implementing an IPv6 network, the administrator notices that the OSPFv3 process is not starting on the routers. What could be the problem?​

No router IDs are configured on the routers.
Authentication was not implemented between the routers.
The routers were not configured with the network command.​
The routers are configured with the default priority.

Answer 98

No router IDs are configured on the routers.

Question 99

Which statement describes the load balancing behavior of EIGRP?

EIGRP for IPv6 supports unequal cost load balancing, but EIGRP for IPv4 does not.
EIGRP for IPv4 supports unequal cost load balancing, but EIGRP for IPv6 does not.
Neither EIGRP for IPv4 nor EIGRP for IPv6 support unequal cost load balancing.
Both EIGRP for IPv4 and EIGRP for IPv6 support unequal cost load balancing.

Answer 99

Both EIGRP for IPv4 and EIGRP for IPv6 support unequal cost load balancing.

Question 100

Refer to the exhibit. If the switch has been configured for ??? mode, what command output would replace the question marks?

pvst

pvst+

rstp

ieee

Answer 100

PVST+

Question 101

What is the purpose of the Cisco License Manager?

It is a free software application that helps network administrators rapidly deploy multiple Cisco software licenses across their networks.

It is software that provides the Product Activation Key for the license and important information regarding the Cisco End User License Agreement.

It is software that comes pre-installed with the software image and contains licenses for the customer-specified packages and features.

It is a web-based portal for getting and registering individual software licenses.

Answer 101

It is a free software application that helps network administrators rapidly deploy multiple Cisco software licenses across their networks.

Question 102

While attending a conference, participants are using laptops for network connectivity. When a guest speaker attempts to connect to the network, the laptop fails to display any available wireless networks. The access point is probably operating in which mode?

passive

mixed

open

active

Answer 102

passive

Question 103

Which statement describes a characteristic of OSPF external routes?

Type 1 and type 2 external routes in IPv4 networks are represented in the routing table by EX1 and EX2, respectively.

The cost of a type 1 route is always the external cost, regardless of the interior cost to reach that route.

A type 2 route is always preferred over a type 1 route for the same destination.

The difference between type 1 and type 2 is in the way the cost of the route is being calculated.

Answer 103

The difference between type 1 and type 2 is in the way the cost of the route is being calculated.

Question 104

A network administrator is designing a wireless network for a new school building. The wireless network is for students using their own mobile devices. The network administrator wants to provide the most throughput possible even if the throughput is reduced by students using older devices. Which technology would be best in this situation?

802. 11g
803. 11ac
804. 11n
805. 11ad

Answer 104

802.11g

Question 105

A company has deployed four 48-port access layer switches to a switch bock. For redundancy each access layer switch will connect to two distribution layer switches. Additionally, link aggregation will be used to combine 10 Gbps interfaces to form 20 Gbps trunk links form the access layer switches to the distribution layer switches. How many switch ports on the access layer switches will be available in the switch block to support end devices?
176
184
188
192

Answer 105

184

Question 106

Refer to the exhibit. Routers R1 and R2 are directly connected via their serial interfaces and are both running the EIGRP routing protocol. R1 and R2 can ping the directly connected serial interface of their neighbor, but they cannot form an EIGRP neighbor adjacency.

What action should be taken to solve this problem?

Configure EIGRP to send periodic updates.

Configure the same hello interval between the routers.

Configure both routers with the same EIGRP process ID.

Enable the serial interfaces of both routers.

Answer 106

Configure both routers with the same EIGRP process ID.

Question 107

What is a feature of the OSPF routing protocol?

OSPF authentication is configured in the same way on IPV4 and IPV6 networks

The SPF algorithm chooses the best path based on 30-second updates

Routers can be grouped into autonomous systems to support a hierarchical system.

It scales well in both small and large networks.

Answer 107

It scales well in both small and large networks.