A network administrator needs to deploy AOS-Switches that implement port-based tunneled node. Their Aruba controller has IP address 10.1.10.5/24. The architect has assigned tunneled-node endpoints to VLAN 20.
What is one issue with the current configuration planned for VLAN 20 on the switch? A . VLAN 20 must have GRE enabled on it. B . VLAN 20 cannot have an IP address. C . VLAN 20 must have an IP address in the same subnet as the controller. D . VLAN 20 must not enable jumbo frames.
What is a reason to implement PIM-DM as opposed to PIM-SM? A . to control exactly which multicast groups are routed through the network B . to permit a higher density of RP routers in the network core C . to conserve bandwidth over WAN links D . to use on high-bandwidth routed connections
Which benefit is provided by MD5 authentication for BGP? A . It validates that BGP messages arrive from an authorized device. B . It verifies that received BGP routes have valid next hop IP addresses. C . It enables users to authenticate to a server across BGP AS boundaries. D . It protects BGP routing information from eavesdroppers.
Switch-1 and Switch-2 connect on interface A23. The switches experience a connectivity issue. The network administrator sees that both switches show this interface as up. The administrator sees the output shown in the exhibit on Switch-1.
What is a typical issue that could cause this output? A . asymmetric routing introduced by a routing protocol B . an issue with VLAN mismatch C . mismatched subnet mask on the VLAN for the link D . a jumbo frame mismatch
OSPF Area 1 has two ABRs. One ABR is configured with this range for Area 1: 10.10.0.0/16. The other ABR is not configured with a range for Area 1.
Which type of issue occurs due to this mismatch? A . The ABRs create a discontinuous area and disrupt intra-area routing between devices within Area 1. B . The ABR core would send Area 1 traffic destined to the other switch through an access switch. C . The ABRs lose adjacency entirely and cannot route traffic between each other at all. D . The ABRs lose adjacency in Area 1 and must route all traffic to each other through Area 0.
Exhibit 2 shows the VRRP configuration just after the change.
What is the effect of this change? A . Switch-1 and Switch-2 both become Master in their own VRRP virtual router due to the delay timer mismatch. The mismatch must be fixed. B . Switch-1 now waits to take over as Master if it fails and recovers. This should prevent the connectivity issue from occurring again. C . Switch-1 experiences an internal error in the VRRP process. This error causes Switch-2 to take over as Master for VLAN 2. D . Switch-1 continues to act as it did before the preempt delay time was set. Administrators must plan additional changes to fix the issue.
Exhibit 1 shows the topology for the network. The network administrator sees the log entries shown in Exhibit 2.
Which type of failure is indicated? A . A link between Switch-1 and Switch-2 went down. BFD detected the lost connectivity and behaved as expected. B . Graceful restart helper was not enabled on Switch-2, so BFD was unable to operate correctly, and the session was taken down. C . A hardware issue caused a unidirectional link; BFD detected the issue at Layer 2 and prevented a broadcast storm. D . BFD was set up incorrectly on Switch-2, so it caused Switch-2 to lose adjacency with Switch-1 rather than repair the session.
The implementation plan for AOS-Switches calls for them to implement port-based tunneled node. The Aruba Mobility Controllers that will support the AOS-Switches run software 8.1. The controllers will also support APs, are managed by Mobility Master, and use clustering.
Which issue with this plan needs to be addressed? A . The controllers cannot support tunneled node with AOS-Switches when they are managed by the Mobility Master. B . The switches cannot connect to controllers that also support APs. C . The controllers must have their software updated before they can support the switches. D . The switches must use role-based tunneled node to work with clustering controllers.
The routing switches shown in the exhibit run OSPF on the links between each other. The commander in the Switch-1 VSF fabric goes down. Traffic is disrupted for several seconds.
What should a network administrator do to support a faster failover in a similar situation? A . Configure echo mode BFD on the VLAN that connects Switch-1 and Switch-2. B . Add VRRP on the VLAN between Switch-1 and Switch-2. C . Configure graceful restart, or nonstop OSPF, on Switch-1 and Switch-2, with a proper timer. D . Create a redundant virtual link between Switch-1 and Switch-2.
Exhibit 1 shows a portion of the BGP routing table when the BGP solution was first deployed. Exhibit 2 shows the same portion at the current time.
What can explain the current state? A . Due to changes in the private network, Switch-1 can no longer reach 192.168.2.1. B . Switch-1 can no longer reach ISP 1 at 192.168.1.1. C . Due to changes at ISP 1, Switch-1 now selects a different best route. D . An administrator has applied a route map on Switch-1 that filters advertised routes.