Cisco 400-007 Practice Test - Questions Answers, Page 4
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Which optimal use of interface dampening on a fast convergence network design is true?
When occasional flaps of long duration occur
when numerous adjacent flaps of very short duration occur
when the router hardware it slower than the carrier delay down detection
when the switch hardware is faster than the debounce timer down detection
Refer to the exhibit.
Which impact of using three or more ABRs between the backbone area and area 1 is true?
In a large-scale network LSA replication by all ABRs can cause serious scalability issues
Multiple ABRs reduce the CPU processing on each A6R due to splitting prefix advertisement
In a large-scale network multiple ABRs can create microloops.
Prefixes from the non-backbone area are advertised by one ABR to the backbone
In an OSPF network with routers connected together with Ethernet cabling, which topology typically takes the longest to converge?
partial mesh
full mesh
ring
squared
triangulated
Company XYZ is designing the network for IPv6 security and they have these design requirements:
A switch or router must deny access to traffic from sources with addresses that are correct, but are topologically incorrect Devices must block Neighbor Discovery Protocol resolution for destination addresses that are not found in the binding table.
Which two IPv4 security features are recommended for this company? (Choose two)
IPv6 DHCP Guard
IPv6 Source Guard
IPv6 Destination Guard
IPv6 Prefix Guard
IPv6 RA Guard
Which two statements describe the hierarchical LAN design model? (Choose two)
It is a well-understood architecture that provides scalability
It is the best design for modern data centers
It is the most optimal design but is highly complex
It provides a simplified design
Changes, upgrades, and new services can be introduced in a controlled and stagged manner
Which two points must network designers consider when designing a new network design or when evaluating an existing network design to help them understand the high-level design direction with regards to the security aspects? (Choose two)
Consider Business objectives and goals
Consider organization’s security policy standards
Consider for only multi-site networks
Consider for only new network technologies and components
A healthcare customer requested that SNMP traps must be sent over the MPLS Layer 3 VPN service.
Which protocol must be enabled?
SNMPv3
Syslog
Syslog TLS
SNMPv2
SSH
Refer to the table.
A customer investigates connectivity options for a DCI between two production data centers. The solution must provide dual 10G connections between locations with no single points of failure for Day 1 operations. It must also include an option to scale for up to 20 resilient connections in the second year to accommodate isolated SAN over IP and isolated, dedicated replication IP circuits. All connectivity methods are duplex 10 Gbps. Which transport technology costs the least over two years, in the scenario?
Metro Ethernet
DWDM
CWDM
MPLS
Which architecture does not require an explicit multicast signaling protocol, such as PIM or P2MP, to signal the multicast state hop-by-hop, but instead uses a link state protocol to advertise the multicast forwarding state?
Binary indexed explicit routing
Binary intermediate enhanced routing
Bit indexed explicit replication
Bi-directional implicit replication
Refer to the table.
A customer investigates connectivity options for a DCI between two production data centers to aid a large-scale migration project. The migration is estimated to take 20 months to complete but might extend an additional 10 months if issues arise. All connectivity options meet the requirements to migrate workloads. Which transport technology provides the best ROI based on cost and flexibility?
CWDM over dark fiber
MPLS
DWDM over dark fiber
Metro Ethernet
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