ESwitching Final Exam - CCNA Exploration: LAN Switching and Wireless (Version 4.0) #2

26


Refer to the exhibit. A network administrator has segmented the network into two VLANs and configured Router1 for inter-VLAN routing. A test of the network, however, shows that hosts on each VLAN can only access local resources and not resources on the other VLAN. What is the most likely cause of this problem?

Switch port Fa0/1 is not trunking.
Router interface Fa0/0 is possibly down.
No routing protocol is configured on Router1.
One of the router subinterfaces is possibly down.




27 What will be the effect of the command S1# copy system:running-config tftp://172.16.2.155/tokyo-config?

The IOS will be copied to the TFTP server.
The configuration file named tokyo-config will overwrite the startup configuration file on S1.
The running configuration file on S1 will be saved via TFTP to a file named tokyo-config.
The contents of NVRAM on S1 will become the startup configuration file on the tokyo switch.




28 Using the command copy tftp:backup.cfg startup-config, an administrator downloaded a saved configuration from a TFTP server to a switch. Why does the administrator not detect any changes in the switch configuration after the download completes?

The command should have been copy startup-config tftp:backup.cfg.
A backup configuration from a TFTP server cannot be copied directly into the startup-config.
The command copy running-config startup-config should be used to save the changes on the switch.
Downloading to the startup-config requires the switch to be reloaded in order for the configuration to take effect.




29 What are two benefits of the IEEE 802.11n standard over the IEEE 802.11G? (Choose two.)

requires less equipment
provides improved range
permits increased data rates
has a single-input and a single-output
needs no hardware upgrade for compatibility




30


Refer to the exhibit. Switch SW2 was tested in a lab environment and then inserted into a production network without reloading its configuration. After the trunk link between SW1 and SW2 was brought up, all users lost connectivity to the network. What could be the source of the problem?

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.

Assessment System

Take Assessment - ESwitching Final Exam - CCNA Exploration: LAN Switching and Wireless (Version 4.0)

31


Refer to the exhibit. Both switches are interconnected via a trunk link. Host A and host B are on the default VLAN but are not able to exchange traffic. What should be done to fix the problem?

Allow all VLANs on the trunk link.
Remove the native VLAN from the trunk.
Include a router or switch with Layer 3 capabilities.
Configure the same native VLAN on both ends of the trunk.




32 Which three statements are true regarding router-on-a-stick inter-VLAN routing? (Choose three.)

requires the use of subinterfaces on the router
requires an access link between the router and Layer 2 switch
more cost-efficient and scalable than using multiple physical interfaces
requires each subinterface to be configured with the no shutdown command
can impact performance if many VLANs compete for bandwidth on a single router interface
makes troubleshooting the inter-VLAN routing configuration much less complex than when using multiple physical interfaces




33


Refer to the exhibit. R1 is configured for traditional inter-VLAN routing. R1 can ping computer 3 but cannot ping computer 1. What is a possible cause for this failure?

S1 port Fa0/11 is in the wrong VLAN.
R1 does not have an active routing protocol.
The IP address of computer 1 is in the wrong logical network.
Router interface Fa0/0 has the wrong trunk encapsulation type configured.




34 While configuring a new switch, a network administrator configures the switch as an HTTP server. What benefits does this configuration provide?

This allows the switch to host web pages for the network.
This allows remote VPN connections to the switch over the Internet.
This is required if a web server or web farm is attached to the switch.
This allows web-based configuration tools to be used with the switch.




35


Refer to the exhibit. A new host needs to be connected to VLAN 1. Which IP address should be assigned to this new host?

192.168.1.11 /28
192.168.1.22 /28
192.168.1.33 /28
192.168.1.44 /28
192.168.1.55 /28




36


Refer to the exhibit. What does “LEARNING” mean as it relates to the Spanning Tree Protocol?

The switch is sending and receiving data frames.
The switch is not receiving BPDUs, but is sending and receiving data.
The switch is participating in the election process by forwarding the BPDUs it receives.
The switch is receiving BPDUs and populating the MAC address table, but not sending data.




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

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




38


Refer to the exhibit. The hosts connected to switch SW1 are not able to communicate with the hosts in the same VLANs connected to switch SW2. What should be done to fix the problem?

Configure VLANs with different VLAN IDs on switch SW2.
Reconfigure the trunk port on switch SW2 with static trunk configuration.
Introduce a Layer 3 device or a switch with Layer 3 capability in the topology.
Apply IP addresses that are in the same subnet to the interfaces used to connect SW1 and SW2.




39 When configuring a router to act as an SSH server, what should be configured before issuing the crypto key generate rsa command?

the security domain name
the VTP domain name
the IP domain name
the host name




40


Refer to the exhibit. Which switch will be elected as the root bridge of the spanning tree topology?

Cat-A
Cat-B
Cat-C
Cat-D

41 In which mode is a VTP switch operating if it has been configured to only forward VTP advertisements?

client
root
server
transparent

42 What is an efficient and cost effective way to minimize the frequency and effects of broadcast storms on an Ethernet LAN?

Connect each PC directly to a router port.
Use access control lists to filter broadcasts from the network.
Divide the computers into separate VLANs on the existing switches.
Divide the computers into separate workgroups using different physical switches.

43
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?

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.

44 Which device must be installed in each computer to allow a wireless connection to be established?

DSL modem
wireless NIC
wireless router
wireless access point

45
Refer to the exhibit. The Layer 2 switching design that is shown has been implemented in a campus environment that is using Spanning Tree Protocol. All inter-switch links that are shown are trunks. Whenever an inter-switch link fails, the network takes nearly a minute to completely converge. How can the convergence time be reduced?

Increase the capacity of the distribution and core trunk links to 10 Gb/s.
Add a trunk link that directly connects D1 and D2.
Use Layer 3 switching on the core switch.
Implement Rapid Spanning Tree Protocol.


Assessment System

Take Assessment - ESwitching Final Exam - CCNA Exploration: LAN Switching and Wireless (Version 4.0)

46
Refer to the exhibit. Router R-West and switch S-West1 are connected via a single ethernet cable between the router interface fa0/0 and the switch interface fa0/1. The router and switch have been configured with the commands that are displayed in the exhibit. The network administrator enters the show interfaces trunk command and receives the output as shown. What is the cause of the "not-trunking" status for switch port Fa0/1?

The trunk is established, but no VLANs have been configured to use it.
The router is missing the dynamic trunking protocol statements necessary to form a trunk.
Because the router does not support Dynamic Trunking Protocol, the trunk has not been established.
The router, the switch, or both must be configured with the dynamic desirable option for Dynamic Trunking Protocol to establish a trunk.


47 Which statement about STP network diameter is correct?

STP diameters are restricted by convergence times.
Layer 2 root elections should be optimized by adjusting BPDU timers to match network diameter.
Using lower bandwidth connections between switches will allow STP to have a larger network diameter.
Portfast can be used to increase the allowable switched network diameter because it disables the forward delay and maximum age timers.


48 Which statement is correct about STP architecture?

Spanning Tree Protocol will guarantee a loop free Layer 2 topology.
Spanning Tree Protocol guarantees the shortest path to destination networks.
The switch with the highest priority will be assigned the lowest BID in the root election.
The first step in the spanning-tree election process is to determine the root port.
To select designated ports, the spanning-tree algorithm must determine the longest contiguous path from the root bridge.


49


Refer to the exhibit. What will allow a host on VLAN 40 on switch X to communicate with a host in VLAN 40 on switch Y?

QoS
routing
trunking
VPN


50

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?

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.

51 What identifier in the BPDU creates a unique BID for a switch?

IP address
MAC address
bridge priority
VLAN ID
port priority
52 What is the purpose of the switch command switchport access vlan 99?
to enable port security
to make the port operational
to assign the port to a particular VLAN
to designate the VLAN that does not get tagged
to assign the port to the native VLAN (VLAN 99)