CCNA 3

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?

Add another access point.*

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 the interfaces need to be working in the same duplex mode.*

feasible distance to 192.168.11.64 new successor to network 192.168.1.0 destination network

feasible distance to 192.168.11.64 => 660110 new successor to network 192.168.1.0 => 192.168.3.1 destination network => 192.168.11.64

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

forwarding rate*** Power over Ethernet*** port density***

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?

ipv6 unicast-routing*

The spanning-tree "___________________" global configuration command is used to enable Rapid PVST+.

mode rapid-pvst

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

on a per-destination basis*

When are EIGRP update packets sent?

only when necessary*

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

open*

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 10.10.10.2*

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

receiving a broadcast beacon frame* transmitting a probe request*

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

root port*

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 interfaces*

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

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 192.168.10.128 0.0.0.63*

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?

GLBP allows load balancing between routers.*

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?

GLBP*

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.*

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*

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

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

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

IPBase*

What occurs when authentication is configured on an EIGRP router?

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

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

MAC address of the virtual router*

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

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

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?

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

RouterA# Source Filename? Address or name of remote host ->

RouterA# -> copy flash0:tftp: Source Filename? -> C1900-universalk9-m.SPA.152-4.M3.bin Address or name of remote host ->2001:DB8:CAFE:100::9

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

Routes within an area are summarized by the ABR.* ABRs advertise the summarized routes into the backbone.*

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

S1 will automatically adjust the priority to be the lowest.* S2 can become root bridge if S1 fails.*

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

S2*

A network administrator is configuring PVST+ for the three switches. What will be a result of entering these commands?

S3 will set the priority value for VLAN 30 to 8192*

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

SW1: on SW2: on*

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.*

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?

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. *

What two conditions have to be met in order to form a cluster that includes 5 access points? (Choose two.)

The APs have to be connected on the same network segment.* Clustering mode must be enabled on the APs.*

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

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

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

The EtherChannel is down.* The port channel ID is 2.*

Based on the command output shown, what is the status of the EtherChannel?

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

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?

The EtherChannel will remain functional.*

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

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

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.*

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.*

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

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.*

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

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.*

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

There is sufficient space in flash memory.*

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.*

What can be concluded about network 192.168.1.0 in the R2 routing table?

This network was learned through summary LSAs from an ABR.*

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

connect remote networks* provide data traffic security*

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

continually purchase backup equipment for the network*

Which function is provided by EtherChannel?

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

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

LACP*

What two license states would be expected on a new Cisco router once the license has been activated? (Choose two.)

License Type: Permanent * License State: Active, In Use *

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

10.0.0.0/8*

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

15.1M *

By default, how many equal cost routes to the same destination can be installed in the routing table of a Cisco router?

4***

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?

61440*

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?

Bandwidth Prioritization*

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.* The Mac address table becomes unstable.*

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?

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

Internal routers: Area border routers: Autonomous System Boundary Routers:

Internal routers: Routers that have all their interfaces in the same area and have identical LSDBs. Area border routers: All the routers of this type maintain separate LSDBs for each area to which they connect. Autonomous System Boundary Routers: Routers that have at least one interface attached to an external internetwork (another autonomous system), such as a non-OSPF network.

What is the function of STP in a scalable network?

It disables redundant paths to eliminate Layer 2 loops.*

What is the purpose of the Cisco PAK?

It is a key for enabling an IOS feature set.*

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

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

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

It supports IPv6 and IPv4 addressing.*

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

OFDM*

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

R1 is the distribution point for the routers that are attached to the 10.0.0.4 network.* R1 is participating in multiarea OSPF.*

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

An EIGRP router loses the route to a network. Its topology table contains two feasible successors to the same network. What action will the router take?

The best alternative backup route is immediately inserted into the routing table.*

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?

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

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

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.*

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

The packets are sent as unicast.* The packets are unreliable.*

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

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

This type of LSA exists in multi-access & non-broadcast multi-access networks w/DR => This type of LSA describes routes to networks outside of the OSPF AS => This type of LSA is flooded only within the area which it originated => This type of LSA is used by ABR to advertise networks from other areas =>

This type of LSA exists in multi-access & non-broadcast multi-access networks w/DR => TYPE 2 LSA This type of LSA describes routes to networks outside of the OSPF AS => TYPE 5 LSA This type of LSA is flooded only within the area which it originated => TYPE 1 LSA This type of LSA is used by ABR to advertise networks from other areas => TYPE 3 LSA

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.)

Two auto modes cannot form a bundle.* The channel group is inconsistent.*

What are two methods to make the OSPF routing protocol more secure? (Choose two.)

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

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.*

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

WPA2 Enterprise*

Which wireless encryption method is the most secure?

WPA2 with AES *

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

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

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question. Which message was displayed on the web server?

You've made it!*

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

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

a direct connection to the console or AUX port* a terminal emulation client*

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

ability to build a routing table*

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*

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

alternate, designated, root, root*

What type of OSPF IPv4 route is indicated by a route table entry descriptor of O E1?

an external route that is advertised by an ASBR*

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* the IP addresses that are configured on adjacent routers*

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*

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

as the autonomous system number*

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

auto * desirable *

The "__________" area interconnects with all other OSPF area types.

backbone

Which two parameters does EIGRP use by default to calculate the best path? (Choose two.)

delay* bandwidth*

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

the interface IPv6 link-local address*

Which technological factor determines the impact of a failure domain?

the role of the malfunctioning device*

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

to provide increased network security *** to avoid unnecessary update traffic ***

EIGRP keeps feasible successor routes in the "______________" table.

topology

Which type of OSPF LSA represents an external route and is propagated across the entire OSPF domain?

type 5*

When should EIGRP automatic summarization be turned off?

when a network contains discontiguous network addresses***

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

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

When does an OSPF router become an ABR?

when the router has interfaces in different areas*