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Cisco 400-007 Exam Dumps
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400-007 Dumps
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Cisco 400-007 Sample Questions
Question # 1An enterprise network has two core routers that connect to 200 distribution routers and uses fullmesh IBGP peering between these routers as its routing method. The distribution routers are experiencing high CPU utilization due to the BGP process. Which design solution is the most cost effective?
A. Implement route reflectors on the two core routers
B. Increase the memory on the core routers s
C. Implement e BGP between the core and distribution routers
D. Increase the memory on the distribution routers
E. Increase bandwidth between the core routers
Question # 2
You want to mitigate failures that are caused by STP loops that occur before UDLD detects the failure or that are caused by a device that is no longer sending BPDUs. Which mechanism do you use along with UDLD?
A. Root guard
B. BPDU guard
C. Loop guard
D. BPDU filtering
Question # 3
A multicast network is sing Bidirectional PIM. Which two combined actions achieve high availability so that two RPs within the same network can act in a redundant manner?
A. Use two phantom RP addresses
B. Manipulate the administration distance of the unicast routes to the two RPs
C. Manipulate the multicast routing table by creating static mroutes to the two RPs
D. Advertise the two RP addresses in the routing protocol
E. Use anycast RP based on MSDP peering between the two RPs
F. Control routing to the two RPs through a longest match prefix
Question # 4
Which purpose of a dynamically created tunnel interface on the design of IPv6 multicast services Is true?
A. first-hop router registration to the RP
B. multicast client registration to the RP
C. multicast source registration to the RP
D. transport of all IPv6 multicast traffic
Question # 5
How can EIGRP topologies be designed to converge as fast as possible in the event of a point-topoint link failure?
A. Limit the query domain by use of distribute lists.
B. Build neighbor adjacencies in a triangulated fashion.
C. Build neighbor adjacencies in squared fashion.
D. Limit the query domain by use of summarization.
E. Limit the query domain by use of default routes.
Question # 6
Which effect of using ingress filtering to prevent spoofed addresses on a network design is true?
A. It reduces the effectiveness of DDoS attacks when associated with DSCP remarking to Scavenger.
B. It protects the network Infrastructure against spoofed DDoS attacks.
C. It Classifies bogon traffic and remarks it with DSCP bulk.
D. It filters RFC 1918 IP addresses.
Question # 7
Which relationship between IBGP and the underlying physical topology is true?
A. iBGP full mesh requirement does not dictate any specific network topology.
B. iBGP can worn only on a ring network topology with a link-state protocol like OSPF or IS-IS
C. iBGP full mesh requires an underlying fully meshed network topology.
D. iBGP does not work on a ring network topology even with an underlying IGP.
Question # 8
How many fully established neighbour relationships exist on an Ethernet with five routers running OSPF as network type broadcast?
A. 5
B. 6
C. 7
D. 10
E. 20
Question # 9
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.
Question # 10
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
C. route tagging
D. route tagging
E. route filtering
F. matching EIGRP process ID
Question # 11
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
Question # 12
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
Question # 13
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
Question # 14
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.
Question # 15
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
Question # 16
Which two conditions must be met for EIGRP to maintain an alternate loop-free path to a remote network? (Choose two.)
A. The Reported Distance from a successor is lower than the local Feasible Distance.
B. The Reported Distance from a successor is higher than the local Feasible Distance.
C. The feasibility condition does not need to be met.
D. The Feasible Distance from a successor is lower than the local Reported Distance.
E. A feasible successor must be present.