CCNAv7: Midterm

Which router bootup sequence is correct?​

1 - perform the POST and load the bootstrap program 2 - locate and load the Cisco IOS software 3 - locate and load the startup configuration file or enter setup mode

What are two load-balancing methods in the EtherChannel technology? (Choose two.)

1. source IP to destination IP 2. source MAC to destination MAC

A small company network has six interconnected Layer 2 switches. Currently all switches are using the default bridge priority value. Which value can be used to configure the bridge priority of one of the switches to ensure that it becomes the root bridge in this design?

28672

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 The STP bridge priority is a two byte number, but it can only be customized in increments of 4096. The smaller number is preferred, but the largest usable priority value is 61440.

What is the minimum Ethernet frame size that will not be discarded by the receiver as a runt frame?

64 bytes

Refer to the exhibit. How many broadcast domains are displayed?

8

Which spanning tree standard supports only one root bridge so that traffic from all VLANs flows over the same path?

802.1D

Refer to the exhibit. On the basis of the output that is shown, what can be determined about the EtherChannel bundle?

A Cisco proprietary protocol was used to negotiate the EtherChannel link. Two protocols can be used to send negotiation frames that are used to try to establish an EtherChannel link: PAgP and LACP. PAgP is Cisco proprietary, and LACP adheres to the industry standard.

Which statement describes SVIs?

A default SVI is created for VLAN 1 for switch administration.

Which statement describes an EtherChannel implementation?

A trunked port can be part of an EtherChannel bundle. Up to 16 links can be grouped in an EtherChannel by using the the PAgP or LACP protocol. EtherChannel can be configured as a Layer 2 bundle or a Layer 3 bundle. Configuring a Layer 3 bundle is beyond the scope of this course. If a trunked port is a part of the EtherChannel bundle, all ports in the bundle need to be trunk ports and the native VLAN must be the same on all of these ports. A best practice is to apply the configuration to the port channel interface. The configuration is then automatically applied to the individual ports.

Which switch component reduces the amount of packet handling time inside the switch?

ASIC

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. All interfaces in the EtherChannel bundle must be assigned to the same VLAN or be configured as a trunk. If the allowed range of VLANs is not the same, the interfaces do not form an EtherChannel even when set to auto or desirable mode.

During the implementation of Spanning Tree Protocol, all switches are rebooted by the network administrator. What is the first step of the spanning-tree election process?

All the switches send out BPDUs advertising themselves as root bridge

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

Alternate - S2 port to S3Designated - S1 port to S3Root - S2 port to S1Root - S3 port to S1

Refer to the exhibit. A network administrator is configuring an EtherChannel link between two switches, SW1 and SW2. However, the EtherChannel link fails to establish. What change in configuration would correct the problem?

Configure SW2 EtherChannel mode to desirable*

A network administrator has configured ​VLAN 99 as the management VLAN and has configured it with an IP address and subnet mask. The administrator issues the show interface vlan 99 command and notices that the line protocol is down. Which action can change the state of the line protocol to up?

Connect a host to an interface associated with VLAN 99

Refer to the exhibit. Which switching technology would allow each access layer switch link to be aggregated to provide more bandwidth between each Layer 2 switch and the Layer 3 switch?

EtherChannel

Which message is displayed when 10.10.10.1 is entered into the PC1 Web Browser address bar?

File server

Which characteristic describes cut-through switching?

Frames are forwarded without any error checking.

Refer to the exhibit. A network administrator is verifying the configuration of inter-VLAN routing. Users complain that PCs on different VLANs cannot communicate. Based on the output, what are two configuration errors on switch interface Gi1/1? (Choose two.)

Gi1/1 is in the default VLAN. Gi1/1 is configured as trunk mode.

Which statement describes the system LED operation on Cisco Catalyst switches?

If the LED is amber, the system is receiving power but it is not functioning properly.

Refer to the exhibit. PC1 is unable to communicate with server 1. The network administrator issues the show interfaces trunk command to begin troubleshooting. What conclusion can be made based on the output of this command?

Interface G0/2 is not configured as a trunk.

What are two advantages of using LACP? (Choose two.)

It allows directly connected switches to negotiate an EtherChannel link. It allows the use of multivendor devices. The Link Aggregation Control Protocol (LACP) allows directly connected multivendor switches to negotiate an EtherChannel link. LACP helps create the EtherChannel link by detecting the configuration of each side and making sure that they are compatible so that the EtherChannel link can be enabled when needed.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# ipv6 address 2001:db8:a2b4:88::1/64 command?

It applies an IPv6 address to the virtual interface.

Refer to the exhibit. A network administrator is configuring inter-VLAN routing on a network. For now, only one VLAN is being used, but more will be added soon. What is the missing parameter that is shown as the highlighted question mark in the graphic?

It identifies the VLAN number.

What is a characteristic of spanning tree?

It is enabled by default on Cisco switches.

What is a characteristic of a routed port on a Layer 3 switch?

It is not assigned to a VLAN.

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

LACP

What value determines the root bridge when all switches connected by trunk links have default STP configurations?

MAC address

Refer to the exhibit. The network administrator wants to configure Switch1 to allow SSH connections and prohibit Telnet connections. How should the network administrator change the displayed configuration to satisfy the requirement?

Modify the transport input command.

What is the outcome of a Layer 2 broadcast storm?

New traffic is discarded by the switch because it is unable to be processed.*

Refer to the exhibit. A switch receives a Layer 2 frame that contains a source MAC address of 000b.a023.c501 and a destination MAC address of 0050.0fae.75aa. Place the switch steps in the order they occur. (Not all options are used.)

Occurs first- the switch adds the source MAC address to the MAC address table Occurs second-because the destination is not known, the switch forwards the frame out all ports except the port through which the frame arrived.

A network contains multiple VLANs spanning multiple switches. What happens when a device in VLAN 20 sends a broadcast Ethernet frame?

Only devices in VLAN 20 see the frame.

Which is the default STP operation mode on Cisco Catalyst switches?

PVST+

Match the spanning-tree feature with the protocol type. (Not all options are used.)

PVST+ cisco implementation of IEEE 802..1D RSTP fast converging enhancement of IEEE 802.1D MSTP IEEE standard that reduces the number of STP instances Rapid PVST+ proprietary per VLAN implementation of IEEE 802.1w

Port Fa0/11 on a switch is assigned to VLAN 30. If the command no switchport access vlan 30 is entered on the Fa0/11 interface, what will happen?

Port Fa0/11 will be returned to VLAN 1.

Which two concepts relate to a switch port that is intended to have only end devices attached and intended never to be used to connect to another switch? (Choose two.)

PortFast edge port

Which tasks can be accomplished by using the command history feature? (Choose two.)

Recall previously entered commands. Set the command history buffer size.

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

S2

Match the STP protocol with the correct description. (Not all options are used.)

STP the legacy for STP that runs all VLANs in a single spanning-tree instance MSTP a protocol that allows multiple VLANs to run in a single spanning-tree Rapid PVST+ a Cisco enhancement of RSTP to provide a spanning-tree instance for each VLAN

Which two statements are correct with respect to SVI inter-VLAN routing? (Choose two.)

Switching packets is faster with SVI. There is no need for a connection to a router.

Refer to the exhibit. A network administrator issued the show etherchannel summary command on the switch S1. What conclusion can be drawn?

The EtherChannel is not functional.

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.

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

The allowed range of VLANs must be the same on both switches. To enable a trunking EtherChannel successfully, the range of VLANs allowed on all the interfaces must match; otherwise, the EtherChannel cannot be formed. The interfaces involved in an EtherChannel do not have to be physically contiguous, or on the same module. Because the EtherChannel is a trunking one, participating interfaces are configured as trunk mode, not access mode.

Refer to the exhibit. A technician is programming switch SW3 to manage voice and data traffic through port Fa0/20. What, if anything, is wrong with the configuration?

The command used to assign the voice VLAN to the switch port is incorrect.

Refer to the exhibit. What is the cause of the error that is displayed in the configuration of inter-VLAN routing on router CiscoVille?

The encapsulation dot1Q 20 command has not been configured.​

Refer to the exhibit. A network administrator is verifying the configuration of inter-VLAN routing. Users complain that PC2 cannot communicate with PC1. Based on the output, what is the possible cause of the problem?

The encapsulation dot1Q 5 command contains the wrong VLAN.

Which two characteristics describe the native VLAN? (Choose two.)

The native VLAN traffic will be untagged across the trunk link. The native VLAN provides a common identifier to both ends of a trunk.

Refer to the exhibit. A network administrator is reviewing port and VLAN assignments on switch S2 and notices that interfaces Gi0/1 and Gi0/2 are not included in the output. Why would the interfaces be missing from the output?

They are configured as trunk interfaces.

How do switch buffers affect network performance?

They store frames received, thus preventing premature frame discarding when network congestion occurs.

Refer to the exhibit. The administrator tried to create an EtherChannel between S1 and the other two switches via the commands that are shown, but was unsuccessful. What is the problem?

Traffic cannot be sent to two different switches through the same EtherChannel link.

Match the IEEE 802.1Q standard VLAN tag field with the description. (Not all options are used.)

User Priority a value that supports level or service implementation. Type a value for the tag protocol ID value Canonical Format Identifier an identifier that enables Token Ring frames to be carried across Ethernet links VLAN ID a VLAN number

What additional information is contained in the 12-bit extended system ID of a BPDU?

VLAN ID

Which solution would help a college alleviate network congestion due to collisions?

a high port density switch

Which impact does adding a Layer 2 switch have on a network?

an increase in the size of the broadcast domain

Which command is used to set the BOOT environment variable that defines where to find the IOS image file on a switch?

boot system

What type of Ethernet cable would be used to connect one switch to another switch when neither switch supports the auto-MDIX feature?

crossover

What is an accurate description of redundancy?

designing a network to use multiple paths between switches to ensure there is no single point of failure

Refer to the exhibit. An administrator wants to form an EtherChannel between the two switches by using the Port Aggregation Protocol. If switch S1 is configured to be in auto mode, which mode should be configured on S2 to form the EtherChannel?

desirable

After the election of the root bridge has been completed, how will switches find the best paths to the root bridge?

each switch will analyze the sum of all port costs to reach the root and use the path with the lowest cost.

What advantage does SSH offer over Telnet?

encryption

A switch is configured to run STP. What term describes a field used to specify a VLAN ID?

extended system ID

Which three components are combined to form a bridge ID?

extended system ID bridge priority MAC address

Which port state will switch ports immediately transition to when configured for PortFast?

forwarding

Which three port states are used by Rapid PVST+? (Choose three.)

forwarding learning discarding

In which two port states does a switch learn MAC addresses and process BPDUs in a PVST network? (Choose two.)

forwarding learning

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.Which set of configuration commands issued on SW1 will successfully complete the EtherChannel link between SW1 and SW2?

interface GigabitEthernet0/1channel-group 1 mode desirable

When PVST is running over a switched network, which port state can participate in BPDU frame forwarding based on BPDUs received, but does not forward data frames?

listening

What is the first action in the boot sequence when a switch is powered on?

load a power-on self-test program

What type of VLAN is configured specifically for network traffic such as SSH, Telnet, HTTPS, HHTP, and SNMP?

management VLAN

What is one way to correct a spanning tree failure?

manually remove redundant links in the switched network

Which type of VLAN is used to designate which traffic is untagged when crossing a trunk port?

native

Refer to the exhibit. A network administrator has configured R1 as shown. When the administrator checks the status of the serial interface, the interface is shown as being administratively down. What additional command must be entered on the serial interface of R1 to bring the interface up?

no shutdown

When EtherChannel is configured, which mode will force an interface into a port channel without exchanging aggregation protocol packets?

on

If one end of an Ethernet connection is configured for full duplex and the other end of the connection is configured for half duplex, where would late collisions be observed?

on the half-duplex end of the connection

What must an administrator have in order to reset a lost password on a router?

physical access to the router.

What is the purpose of the Spanning Tree Protocol (STP)?

prevents Layer 2 loops

Which two network design features require Spanning Tree Protocol (STP) to ensure correct network operation? (Choose two.)

redundant links between Layer 2 switches removing single points of failure with multiple Layer 2 switches

Which STP port role is adopted by a switch port if there is no other port with a lower cost to the root bridge?

root port

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

root port

Which command will provide information about the status of all interfaces including the number of giants, runts, and collisions on the interface?

show interfaces

An administrator is troubleshooting a switch and wants to verify if it is a root bridge. What command can be used to do this?

show spanning-tree

Which two parameters must match on the ports of two switches to create a PAgP EtherChannel between the switches? (Choose two.)

speed VLAN information

Which switching method ensures that the incoming frame is error-free before forwarding?

store-and-forward

Which prompt is displayed when a network administrator successfully accesses the boot loader on a switch to recover from a system crash?

switch:

Refer to the exhibit. A network administrator has configured router CiscoVille with the above commands to provide inter-VLAN routing. What command will be required on a switch that is connected to the Gi0/0 interface on router CiscoVille to allow inter-VLAN routing?​

switchport mode trunk

A network administrator issues the show vlan brief command while troubleshooting a user support ticket. What output will be displayed?

the VLAN assignment and membership for all switch ports

What is the value used to determine which port on a non-root bridge will become a root port in a STP network?

the path cost

Which two statements describe a switch port that is configured with PortFast? (Choose two.)

the switch port immediately transitions from blocking to the forwarding state. the switch port should never receive BPDUs

Refer to the exhibit. In what switch mode should port G0/1 be assigned if Cisco best practices are being used?

trunk

When configuring a switch for SSH access, what other command that is associated with the login local command is required to be entered on the switch?

username username secret secret