cisco 400-007 practice test

Refer to the exhibit.

Traffic was equally balanced between Layer 3 links on core switches SW1 and SW2 before an
introduction of the new video server in the network. This video server uses multicast to send video
streams to hosts and now one of the links between core switches is over utilized Which design
solution solves this issue?

• A. Add more links between core switches.
• B. Aggregate links Layer 2 link aggregation.
• C. Apply a more granular load- balancing method on SW1.
• D. Apply a more granular load-balancing method on SW2.
• E. Filter IGMP joins on an over -utilized link.

How must the queue sizes be designed to ensure that an application functions correctly?

• A. Each individual device queuing delay in the chain must be less than or equal to the application required delay.
• B. The queuing delay on every device in the chain must be exactly the same to the application required delay.
• C. The default queue sizes are good for any deployment as it compensates the serialization delay.
• D. The sum of the queuing delay of all devices plus serialization delay in the chain must be less than or equal to the application required delay.

Which two mechanisms avoid suboptimal routing in a network with dynamic mutual redistribution
between multiple OSPFv2 and EIGRP boundaries? (Choose two.)

• A. AD manipulation
• B. matching OSPF external routes
• D. route tagging
• E. route filtering
• F. matching EIGRP process ID

Which Interconnectivity method offers the fastest convergence in the event of a unidirectional issue
between three Layer 3 switches connected together with routed links in the same rack in a data
center?

• A. Copper Ethernet connectivity with BFD enabled
• B. Copper Ethernet connectivity with UDLD enabled
• C. Fiber Ethernet connectivity with BFD enabled
• D. Fiber Ethernet connectivity with UDLD enabled

Which two actions ensure voice quality in a branch location with a low-speed, high-latency WAN
connection? (Choose two.)

• A. Increase WAN bandwidth
• B. Increase memory branch switch.
• C. Fragment data packets.
• D. Replace any electrical links with optical links
• E. Prioritize voice packets

Which function is performed at the access layer of the three-layer hierarchical network design
model?

• A. fault isolation
• B. QoS classification and marking boundary
• C. reliability -
• D. fast transport
• E. redundancy and load balancing

DRAG DROP
Drag and drop the design characteristics from the left onto the correct network filter techniques on
the right. Not all options are used.

Refer to the exhibit.

As part of a redesign project, you must predict multicast behavior What happens to the multicast
traffic received on the shared tree (*,G), if it is received on the LHR interface indicated*?

• A. It is dropped due to an unsuccessful RPF check against the multicast source
• B. It is switched give that no RPF check is performed
• C. It is switched due to a successful RPF check against the routing table
• D. It is dropped due to an unsuccessful RPk8t8ck against the multicast receiver.

A BGP route reflector in the network is taking longer than expected to coverage during large network
changes. Troubleshooting shows that the router cannot handle all the TCP acknowledgements during
route updates. Which action can be performed to tune the device performance?

• A. Increase the size of the hold queue.
• B. Increase the size of the large buffers.
• C. Decrease the size of the small buffers.
• D. Increase the keepalive timers for each BGP neighbor.

Which two application requirements are mandatory tor traffic to receive proper treatment when
placed in the priority queue? (Choose two.)

• A. small transactions (HTTP-like behavior)
• B. WRED drop treatment
• C. tolerance to packet loss
• D. intolerance to jitter
• E. TCP-based application