CCNA v7 141-160

141. Refer to the exhibit. PC-A and PC-B are both in VLAN 60. PC-A is unable to communicate with PC-B. What is the problem?

• The native VLAN should be VLAN 60.

• The native VLAN is being pruned from the link.

• The trunk has been configured with the switchport nonegotiate command.

• The VLAN that is used by PC-A is not in the list of allowed VLANs on the trunk.

142. A network administrator is configuring a WLAN. Why would the administrator use RADIUS servers on the network?

• to centralize management of multiple WLANs

• to restrict access to the WLAN by authorized, authenticated users onlyc

• to facilitate group configuration and management of multiple WLANs through a WLC

• to monitor the operation of the wireless network

143. What is the effect of entering the switchport mode access configuration command on a switch?

• It enables BPDU guard on a specific port.

• It manually enables a trunk link.

• It disables an unused port.

• It disables DTP on a non-trunking interface.

144. A network administrator has configured a router for stateless DHCPv6 operation. However, users report that workstations are not receiving DNS server information. Which two router configuration lines should be verified to ensure that stateless DHCPv6 service is properly configured? (Choose two.)

• The domain-name line is included in the ipv6 dhcp pool section.

• The dns-server line is included in the ipv6 dhcp pool section.

• The ipv6 nd other-config-flag is entered for the interface that faces the LAN segment.

• The address prefix line is included in the ipv6 dhcp pool section.

145. A network administrator is configuring a WLAN. Why would the administrator disable the broadcast feature for the SSID?

• to eliminate outsiders scanning for available SSIDs in the area

• to centralize management of multiple WLANs

• to facilitate group configuration and management of multiple WLANs through a WLC

• to provide prioritized service for time-sensitive applications

146. Refer to the exhibit. An administrator is attempting to install an IPv6 static route on router R1 to reach the network attached to router R2. After the static route command is entered, connectivity to the network is still failing. What error has been made in the static route configuration?

• The next hop address is incorrect.

• The interface is incorrect.

• The destination network is incorrect.

• The network prefix is incorrect.

147. What action takes place when a frame entering a switch has a unicast destination MAC address that is not in the MAC address table?

• The switch updates the refresh timer for the entry.

• The switch resets the refresh timer on all MAC address table entries.

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

• The switch will forward the frame out all ports except the incoming port.

148. A junior technician was adding a route to a LAN router. A traceroute to a device on the new network revealed a wrong path and unreachable status. What should be done or checked?

• Create a floating static route to that network.

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

• Check the configuration of the exit interface on the new static route.

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

149. What is the effect of entering the ip arp inspection vlan 10 configuration command on a switch?

• It specifies the maximum number of L2 addresses allowed on a port.

• It enables DAI on specific switch interfaces previously configured with DHCP snooping.

• It enables DHCP snooping globally on a switch.

• It globally enables BPDU guard on all PortFast-enabled ports.

150. What protocol or technology manages trunk negotiations between switches?

• VTP

• EtherChannel

• DTP

• STP