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1

R the exhibit. Switch SW2 was tested in a lab environment and then inserted into a product network without reloading its configuration. After the trunk link between SW1 and SW2 wa brought up, all users lost connectivity to the network. What could be the source of the pro
Correct Response Your Response All the VLANs were pruned from the trunk port between SW1 and SW2. SW1 and SW2 cannot be both set as VTP servers in the same VTP domain. VTP configuration revision number of SW2 was higher than the configuration revision number of SW1. The additional VLANs from SW2 created more VLANs than the VLAN database of SW1 could contain. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



4.3.2 Troubleshooting VTP Configurations

2

Refer to the exhibit. Computer A sends a broadcast message. Which devices will see the broadcast?
Correct Response Your Response computer B computer B and Router1 computer C and Router1 computer B, computer D, computer E and Router1 computer B, computer C, computer D, computer E and Router1 computer A, computer B, computer C, computer D, computer E and Router1 This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



3.1.4 Controlling Broadcast Domains with VLANs

3

Which statement regarding the service password-encryption command is true?
Correct Response Your Response The service password-encryption command is entered at the privileged EXEC mode prompt.

The service password-encryption command encrypts only passwords for the console and VTY ports. The service password-encryption command encrypts all previously unencrypted passwords in the running configuration. To see the passwords encrypted by the service password-encryption command, enter the no service password-encryption command. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



2.4.1 Configure Password Options

4

Refer to the exhibit. The switches are configured for VTP as shown. Which two statements correctly describe the operation of these switches? (Choose two.)
Correct Respons e Your Response A new VLAN can be added to Switch1 and that information will be added only to Switch2. A new VLAN can be added to Switch1 and that information will be added to Switch2 and Switch4. An existing VLAN can be deleted from Switch4 and that VLAN will be deleted from Switch1 and Switch2. An existing VLAN can be deleted from Switch2 and that VLAN will be deleted from Switch1 and Switch4. A new VLAN can be added to Switch4 and that information will be added to Switch1, Switch2, and Switch3. A new VLAN can be added to Switch3 and that information will be added to Switch1, Switch2, and Switch4. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



4.1.1 What is VTP?

5

Refer to the exhibit. What three statements describe why Host1 and Host2 are unable to communicate? (Choose three.)
Correct Respons e Your Response The switch ports are on different VLANs. The switch IP address is on the wrong subnet. The hosts are configured on different logical networks. A router is required to forward traffic between Host1 and Host2. The VLAN port assignments must be contiguous for each VLAN. The host default gateway addresses must be on the same logical network. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



6.1.1 Introducing Inter-VLAN Routing

6

Refer to the exhibit. The configuration steps that are listed in the exhibit have been entered in switch S1 via the console. Subsequent attempts to telnet to the switch

are not successful. What is causing the problem?
Correct Response Your Response The switch must be configured with SSH version 1. The transport input command must specify Telnet access. The RSA keys must be returned to zero before SSH will permit Telnet access. The ip domain-name command must also be entered in line configuration mode for the vty lines. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



2.4.3 Configure Telnet and SSH

7

Refer to the exhibit. What will allow a host that is connected to switch X in VLAN 10 to communicate with a host that is connected to switch Y in VLAN 10?
Correct Response Your Response QoS routing trunking VPN VoIP subinterfaces This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



3.2.1 VLAN Trunks

8

After unpacking a new Linksys WRT300N wireless multifunction device, a user needs to change the default administrator password and make other configuration changes. What must the user do to access the device in order to make these changes?
Correct Response Your Response Use a wireless client to associate with the WRT300N and then open a HyperTerminal session with the device. Establish a wired connection with the device and then reboot the attached computer to launch the configuration software. Establish a wired connection from a computer in the same IP subnet as the WRT300N and enter the default IP address of the device into a web browser on the computer. Modify the TCP/IP properties of the computer that is connected to the WRT300N so that the computer and the WRT300N exist on the same network. Then reboot the computer to establish a connection. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



7.3.1 Configuring the Wireless Access Point

9

Refer to the exhibit. What is the purpose of the configuration commands that are shown?
Correct Response Your Response to activate port Fa0/10 to make the port a member of VLAN 30 to activate port security on port Fa0/10 to add VLAN 30 to the trunk that is connected to port Fa0/10 This item references content from the following areas:

CCNA Exploration: LAN Switching and Wireless



3.3.2 Configure a VLAN

10

Refer to the exhibit. Hosts B and C attempt to transmit a frame at the same time, but a collision occurs. Which hosts will receive the collision jamming signal?
Correct Response Your Response all hosts that are shown only hosts B and C only hosts A, B, and C only hosts A, B, C, and D only hosts A, D, E, and F only hosts D, E, and F This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



2.1.1 Key Elements of Ethernet/802.3 Networks

11

Which parameter is associated with wireless authentication?
Correct Response Your Response

shared key SSID ad hoc channel This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



7.1.4 Wireless Operation

12

What provides an authentication mechanism for 802.11based wireless networks?
Correct Response Your Response DSSS OFDM SSID WPA

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



7.1.4 Wireless Operation

13

Which statement correctly describes the spanning-tree path cost?
Correct Response Your Response It is calculated based on the total number of switches connected in a loop. It is calculated based on the utilization of all the switches along a given path. It is calculated based on the bridge priority of the switches along a given path. It is calculated based on the sum of the port cost value, determined by link speed, for each switch port along a given path.

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



5.2.1 The Spanning Tree Algorithm

14

Refer to the exhibit. What is true of the configuration of switch S1?
Correct Respon se Your Response A Cisco proprietary protocol is in use for ports Fa0/1 and Fa0/3. Switch ports Fa0/1 and Fa0/3 have been configured with the switchport mode access command. Untagged frames received on ports Fa0/1 and Fa0/3 will be placed on VLAN 1. Switch ports Fa0/1 and Fa0/3 are configured to carry data from multiple VLANs. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



3.2.2 Trunking Operation

15

Refer to the exhibit. The network administrator is planning five additional VLANs to be shared throughout the VTP

domain on S3. What action should the administrator take before creating the additional VLANs?
Correct Respon se Your Response Create the VLANs on a switch in VTP server mode and allow them to propogate to the other switches in the domain. Modify the configuration revision to 10 to support the additional VLANs. Enable the VTP pruning mode in order to create the VLANs on S3. Enable the VTP v2 mode. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



4.3.1 Configuring VTP

16

Refer to the exhibit. Which password allows the administrator to enter the privileged exec mode?
Correct Response Your Response cisco1 cisco2 cisco3 cisco This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



2.4.1 Configure Password Options

17

Which statement correctly describes a function of a Layer 2 switch?
Correct Your

Response

Response It routes packets between different LAN segments. It uses the destination MAC address to selectively forward a frame. It performs switching and filtering based on the destination network layer address. It drops a frame whose destination MAC address is not in the MAC address table.

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



2.2.4 Layer 2 and Layer 3 Switching

18

Refer to the exhibit. The network administrator configures both switches as displayed. However, host C is unable to ping host D and host E is unable to ping host F. What action should the administrator take to enable this communication?
Correc t Respo nse Your Response

Include a router in the topology.

Associate hosts A and B with VLAN 10 instead of VLAN 1. Remove the native VLAN from the trunk. Configure one trunk port in the dynamic desirable mode. Add the switchport nonegotiate command to the configuration of S2. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



3.2.3 Trunking Modes

19

Refer to the exhibit. Which switch will be elected as the root bridge of the spanning tree topology?
Correct Response Your Response Cat-A Cat-B Cat-C Cat-D This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



5.2.4 Port Roles

20

Refer to the exhibit. What will happen when frames with a source address other than 0019.d2e4.d9f7 enters interface Fa0/24?
Correct Respons e Your Response Fa0/24 will become error-disabled. The incoming frames will be dropped. The Fa0/24 port LED will be turned off. The security violation count will be incremented. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



2.4.6 Configuring Port Security

21

Which two statements describe Spanning Tree Protocol? (Choose two.)
Correct Response Your Response It is only used at Layer 2. It is configured on routers. It eliminates Layer 2 loops in network topologies. It limits the number of valid MAC addresses allowed on a port. It allows VLAN information to propagate to other switches in the network.

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



5.1.3 Real-world Redundancy Issues

22

Refer to the exhibit. Switch SW2 has been newly purchased and added to the network. What configuration should be applied to SW2 so that it participates in the same VTP domain as switch SW1, receives VLAN information from SW1, and synchronizes VLAN information?
Correct Response Your Response Disable VTP pruning on SW2. Configure SW2 in VTP transparent mode. Configure SW2 with the VTP domain password. Configure SW2 as a VTP server with a higher revision number. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



4.3.1 Configuring VTP

23

Which two statements about a service set identifier (SSID) are true? (Choose two.)
Correct Response Your Response

provides strong wireless security responsible for determining the signal strength tells a wireless device to which WLAN it belongs used to encrypt data sent across the wireless network all wireless devices on the same WLAN must have the same SSID This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



7.1.4 Wireless Operation

24

Refer to the graphic. In the Wireless menu option of a Linksys integrated router, what does the Network Mode option Mixed mean?
Correct Response Your Response The router supports encryption and authentication. The router supports both wired and wireless connections. The router supports 802.11b, 802.11g, and 802.11n devices. The router supports connectivity through infrared and radio frequencies. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



7.1.4 Wireless Operation

25

How are data frames identified and sent to the correct VLAN when exiting an Ethernet trunk?

Correct Response

Your Response Frames are forwarded to the correct VLAN based on the VLAN tag. Frames are always forwarded to the native VLAN when exiting a trunk. Frames are forwarded to the correct VLAN based on the source IP address. Frames are forwarded to the correct VLAN based on information in the MAC address table.

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



3.2.2 Trunking Operation

26

Refer to the exhibit. A wireless infrastructure has been established in a company building as shown. The design goal was to allow roaming between the three APs for handheld devices. However, the devices lose connectivity when the users roam. How can this problem be fixed?
Correct Response Your Response Assign different SSIDs to each AP.

Reconfigure all APs to the same channel. Use the same BSSID address for each AP. Reposition the APs so that each area of signal strength overlaps the neighbor by at least 10-15%. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



7.4.4 Solve Access Point Radio and Firmware Issues

27

Refer to the exhibit. After the listed commands are entered into router R1 and switch S1, PC1 and PC2 cannot ping each other. The network administrator enters the show interfaces trunkcommand and gets the results that are shown. What is the likely problem?
Correct Respo nse Your Response The router has not been configured with a routing protocol. The trunk is established, but no VLANs have been configured to use it. The trunk has not been established because the switch port has not been configured for trunking. The switch, the router, or both must be configured with the dynamic desirable option for the Dynamic Trunking Protocol to

establish a trunk. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



6.2.2 Configure Router-on-a-Stick Inter-VLAN Routing

28

Which benefit is gained by designing a network with a small network diameter?
Correct Response Your Response lower latency improved security increased redundancy higher interface bandwidth

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



1.1.2 Principles of Hierarchical Network Design

29

Refer to the exhibit. Switch1 is configured for VTP as shown. An administrator connects four switches to Switch1 and configures trunk links between them. Which of the four switches will successfully receive and install VTP updates from Switch1?
Correct Respons e Your Response

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless

 

4.2.4 VTP Modes 4.3.1 Configuring VTP

30

Refer to the exhibit. After receiving a console notification on Switch2, the network administrator begins to troubleshoot the trunk link between Switch1 and Switch2. Which configuration change can be made to correct the problem with the trunk link?
Correc t Respo nse Your Response

Set the Fa0/1 interface on Switch2 to trunk mode. Change the trunk encapsulation on Switch2 Fa0/1 to dot1q. Change the native VLAN on Switch2 interface Fa0/1 to VLAN 100. Change the access mode VLAN on Switch2 to the default VLAN 1. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



3.4.1 Common Problems with Trunks

31

Refer to the exhibit. Switches SW3 and SW4 are brand new switches with default configurations. The links between the switches are configured as trunk links and all VLANs are allowed on the trunks. On the basis of the show running-config output that is provided, which VLANs will be available on SW3 and SW4?
Correct Respon se Your Response

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



4.2.3 VTP Advertising

32

Which device must be installed in each computer to allow a wireless connection to be established?
Correct Response Your Response DSL modem wireless NIC wireless router wireless access point

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



7.1.3 Wireless Infrastructure Components

33

Which STP port type can only appear once on a segment, and must be present in order for traffic to flow on that segment?
Correct Response Your Response non-root port disabled port designated port non-designated port

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



5.3.4 Step 3. Electing Designated Ports and Non-Designated Ports

34

What is a possible impact of setting too short an aging time in the MAC address table of a switch?
Correct Response Your Response overly large address table unnecessary flooding of packets

excessive timeouts of static addresses impaired ability to dynamically learn new addresses This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



2.3.6 Basic Switch Configuration

35

Which switching method provides error-free data transmission?
Correct Response Your Response fragment-free fast-forward integrity-checking store-and-forward

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



2.2.1 Switch Forwarding Methods

36

A network technician is investigating a problem on a switch that seems to have overflowing buffers and is dropping packets on many incoming ports. On examination the technician discovers that the problem exists because the destination port attaches to a busy server. What is the best way to address this problem?
Correct Response Your Response Increase the amount of RAM on the switch. Change the switch to a symmetric switch. Use a switch that uses store-and-forward switching. Change the switch to one that uses shared memory buffering.

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



2.2.3 Memory Buffering

37

Which three statements accurately describe VLAN types?

(Choose three).
Correct Response Your Response A management VLAN is any VLAN that is configured to access management features of the switch. A data VLAN is used to carry VLAN management data and usergenerated traffic. After the initial boot of an unconfigured switch, all ports are members of the default VLAN. An 802.1Q trunk port, with a native VLAN assigned, supports both tagged and untagged traffic. Voice VLANs are used to support user phone and e-mail traffic on a network. VLAN 1 is always used as the management VLAN. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



3.1.2 Types of VLANs

38

Which statement accurately describes routing between VLANs when the default gateway addresses of the VLANs are applied to physical interfaces.
Correct Response Your Response There is no bandwidth contention on the router interface. This solution will be less expensive than if subinterfaces are used. Trunking will be established between the router and switch ports. Only one physical router interface will be required for multiple VLANs.

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



6.1.2 Interfaces and Subinterfaces

39

A network administrator is implementing a Layer 2 solution for a legacy network that uses a combination of switches. Many of the older devices support only ISL trunking while others support both ISL and 802.1Q trunking. Which STP variant would be best suited for

this network?
Correct Response Your Response RSTP MSTP PVST PVST+ This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



5.4.1 Cisco and STP Variants

40

Refer to the exhibit. Why must the NIC of host H1 operate in half-duplex mode?
Correct Response Your Response H1 must be able to detect collisions. All other hosts have been configured for half-duplex. The collision detect circuit on Switch1 has been disabled. Port Fa0/1 on Switch1 has been configured for half-duplex. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



2.1.1 Key Elements of Ethernet/802.3 Networks

41

Refer to the exhibit. Host A is sending a frame to host C. How does switch SWA tag the frame?
Correct Respon se Your Response It tags the frame with VLAN 1 and sends it to host C. It tags the frame with VLAN 10 and sends it to host C. It tags the frame with VLAN 99 and sends it to host C. It does not tag the frame and sends it to host C. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



3.2.1 VLAN Trunks

42

Refer to the exhibit. A company has acquired a new office in a campus environment. Switches in the existing office and the new office are directly connected by a trunk link. The VLANs and IP addressing are setup as shown in the exhibit. The computers in each office are not able to ping each other. What will fix the problem?
Correct Response Your Response Use an access link between S2 and S3. Connect S2 and S3 to a common router. Set the subnet mask in the new office to /24. Configure the new office default gateway to 172.17.10.1 Change the port assignments in the new office to a different VLAN. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



6.1.1 Introducing Inter-VLAN Routing

43

Refer to the exhibit. What is the result of issuing these commands?
Correct Response Your Response The enable password will be set. The password will be set for the first Telnet connection. The password will be set for the console connection. The password will be set for the auxiliary connection. This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



2.4.1 Configure Password Options

44

Refer to the exhibit. A network administrator needs to download a previously saved configuration file from the TFTP server to Switch1. Which command will accomplish this task?
Correct Response Your Response Switch1# copy tftp://192.168.0.253/backup-confg nvram:startup-config Switch1# copy tftp://192.168.0.254/backup-confg nvram:startup-config Switch1# copy nvram:startup-config tftp://192.168.0.253/backup-config Switch1# copy nvram:startup-config tftp://192.168.0.254/backup-config This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



2.3.8 Basic Switch Management

45

A network administrator enables sticky learning on all access mode interfaces of a Catalyst switch, saves the configuration, then connects hosts to the switch. After the switch operates for several days, the administrator reboots the switch without saving the running configuration. What is the result?
Correct Response Your Response All previously learned MAC addresses are lost. The switch reverts to non-sticky dynamic learning. Connected hosts are no longer able to communicate with the switch. Previously learned sticky addresses are retained in the switch configuration.

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



2.4.6 Configuring Port Security

46

In the implementation of PVST+ in a specific VLAN where all switches have default spanning tree priorities, which spanning-tree command setting could be assigned to force one of the Catalyst switches to become and remain the root bridge?
Correct Response Your Response root primary priority 8192 priority 2048 spanning-tree mode rapid pvst

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



5.4.2 PVST+

47

Which layers should support QoS in a hierarchical

network?
Correct Response Your Response only the access layer only the distribution and core layers only the access and distribution layers the access, distribution, and core layers This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



1.2.3 Switch Features in a Hierarchical Network

48

A network technician notes that ports Fa0/9 through Fa0/12 on a switch have been assigned to VLAN 40. VLAN 40, however, was improperly named and the technician deletes it. What happens to the ports that were assigned to VLAN 40?
Correct Response Your Response All ports will automatically become members of VLAN 1. The ports will automatically become members of the native VLAN. All VLAN 40 member ports will be unable to communicate with any other stations. All ports will remain assigned to VLAN 40 because it cannot be deleted if any ports are currently assigned to it.

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



3.3.3 Managing VLANs

49

Which type of frame contains information that is used in the election of the spanning tree root bridge?
Correct Response Your Response BID LSA LSU

BPDU This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



5.2.1 The Spanning Tree Algorithm

50

When implementing a router-on-a-stick, what must be configured on the router to ensure connectivity between different VLANs?
Correct Response Your Response subinterfaces routing protocol switched virtual circuits dynamic trunking protocol

This item references content from the following areas: CCNA Exploration: LAN Switching and Wireless



6.1.2 Interfaces and Subinterfaces

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