124. Refer to the exhibit. A network administrator configures R1 for inter-VLAN routing between VLAN 10 and VLAN 20. However, the devices in VLAN 10 and VLAN 20 cannot communicate. Based on the configuration in the exhibit, what is a possible cause for the problem?

B. The encapsulation is misconfigured on a subinterface.

A. The port Gi0/0 should be configured as trunk port.

C. A no shutdown command should be added in each subinterface configuration.

D. The command interface gigabitEthernet 0/0.1 is wrong.

125. A network administrator uses the spanning-tree portfast bpduguard default global configuration command to enable BPDU guard on a switch. However, BPDU guard is not activated on all access ports. What is the cause of the issue?

PortFast is not configured on all access ports.

BPDU guard needs to be activated in the interface configuration command mode.

Access ports configured with root guard cannot be configured with BPDU guard.

Access ports belong to different VLANs.

128. A WLAN engineer deploys a WLC and five wireless APs using the CAPWAP protocol with the DTLS feature to secure the control plane of the network devices. While testing the wireless network, the WLAN engineer notices that data traffic is being exchanged between the WLC and the APs in plain-text and is not being encrypted. What is the most likely reason for this?

Although DTLS is enabled by default to secure the CAPWAP control channel, it is disabled by default for the data channel.

DTLS only provides data security through authentication and does not provide encryption for data moving between a wireless LAN controller (WLC) and an access point (AP).

DTLS is a protocol that only provides security between the access point (AP) and the wireless client.

Data encryption requires a DTLS license to be installed on each access point (AP) prior to being enabled on the wireless LAN controller (WLC).

129. A new switch is to be added to an existing network in a remote office. The network administrator does not want the technicians in the remote office to be able to add new VLANs to the switch, but the switch should receive VLAN updates from the VTP domain. Which two steps must be performed to configure VTP on the new switch to meet these conditions? (Choose two.)

Configure the new switch as a VTP client.

Configure the existing VTP domain name on the new switch.

Configure an IP address on the new switch.

Configure all ports of both switches to access mode.

130. Refer to the exhibit. Consider that the main power has just been restored. PC3 issues a broadcast IPv4 DHCP request. To which port will SW1 forward this request?

to Fa0/1, Fa0/2, and Fa0/3 only

to Fa0/1, Fa0/2, Fa0/3, and Fa0/4

to Fa0/1, Fa0/2, and Fa0/4 only

131. What action takes place when the source MAC address of a frame entering a switch is not in the MAC address table?

The switch adds the MAC address and incoming port number to the table.

The switch adds a MAC address table entry for the destination MAC address and the egress port.

The switch replaces the old entry and uses the more current port.

The switch updates the refresh timer for the entry.

132. Employees are unable to connect to servers on one of the internal networks. What should be done or checked?

Use the “show ip interface brief” command to see if an interface is down.

Verify that there is not a default route in any of the edge router routing tables.

Create static routes to all internal networks and a default route to the internet.

Check the statistics on the default route for oversaturation.

133. What is the effect of entering the ip dhcp snooping configuration command on a switch?

It enables DHCP snooping globally on a switch.

It enables PortFast globally on a switch.

It disables DTP negotiations on trunking ports.

It manually enables a trunk link.

134. An administrator notices that large numbers of packets are being dropped on one of the branch routers. What should be done or checked?

Check the routing table for a missing static route.

Create static routes to all internal networks and a default route to the internet.

Create extra static routes to the same location with an AD of 1.

Check the statistics on the default route for oversaturation.

135. What are two switch characteristics that could help alleviate network congestion? (Choose two.)

frame check sequence (FCS) check

136. What is a result of connecting two or more switches together?

The size of the broadcast domain is increased.

The number of broadcast domains is increased.

The number of collision domains is reduced.

The size of the collision domain is increased.

138. Branch users were able to access a site in the morning but have had no connectivity with the site since lunch time. What should be done or checked?

Use the “show ip interface brief” command to see if an interface is down.

Verify that the static route to the server is present in the routing table.

Check the configuration on the floating static route and adjust the AD.

Create a floating static route to that network.

139. What is the effect of entering the switchport port-security configuration command on a switch?

It enables port security on an interface.

It dynamically learns the L2 address and copies it to the running configuration.

It enables port security globally on the switch.

It restricts the number of discovery messages, per second, to be received on the interface.

CCNA v7.0 121-140

Authored by Алуа Иванова

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

An autonegotiation failure can result in connectivity issues.

When the speed is set to 1000 Mb/s, the switch ports will operate in full-duplex mode.

The duplex and speed settings of each switch port can be manually configured.

Enabling autonegotiation on a hub will prevent mismatched port speeds when connecting the hub to the switch.

By default, the speed is set to 100 Mb/s and the duplex mode is set to autonegotiation.

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CCNA v7.0 121-140

121. A network administrator is configuring a WLAN. Why would the administrator use a WLAN controller?

122. A new Layer 3 switch is connected to a router and is being configured for interVLAN routing. What are three of the five steps required for the configuration? (Choose three.)CASE 1

122. A new Layer 3 switch is connected to a router and is being configured for interVLAN routing. What are three of the five steps required for the configuration? (Choose three.)CASE 2

122. A new Layer 3 switch is connected to a router and is being configured for interVLAN routing. What are three of the five steps required for the configuration? (Choose three.)CASE 3

122. A new Layer 3 switch is connected to a router and is being configured for interVLAN routing. What are three of the five steps required for the configuration? (Choose three.)CASE 4

122. A new Layer 3 switch is connected to a router and is being configured for interVLAN routing. What are three of the five steps required for the configuration? (Choose three.)CASE 5

123. Which three statements accurately describe duplex and speed settings on Cisco 2960 switches? (Choose three.)

124. Refer to the exhibit. A network administrator configures R1 for inter-VLAN routing between VLAN 10 and VLAN 20. However, the devices in VLAN 10 and VLAN 20 cannot communicate. Based on the configuration in the exhibit, what is a possible cause for the problem?

125. A network administrator uses the spanning-tree portfast bpduguard default global configuration command to enable BPDU guard on a switch. However, BPDU guard is not activated on all access ports. What is the cause of the issue?

126. Which two types of spanning tree protocols can cause suboptimal traffic flows because they assume only one spanning-tree instance for the entire bridged network? (Choose two.)

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122. A new Layer 3 switch is connected to a router and is being configured for interVLAN routing. What are three of the five steps required for the configuration? (Choose three.)
CASE 1

122. A new Layer 3 switch is connected to a router and is being configured for interVLAN routing. What are three of the five steps required for the configuration? (Choose three.)
CASE 2

122. A new Layer 3 switch is connected to a router and is being configured for interVLAN routing. What are three of the five steps required for the configuration? (Choose three.)
CASE 3

122. A new Layer 3 switch is connected to a router and is being configured for interVLAN routing. What are three of the five steps required for the configuration? (Choose three.)
CASE 4

122. A new Layer 3 switch is connected to a router and is being configured for interVLAN routing. What are three of the five steps required for the configuration? (Choose three.)
CASE 5