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Cisco Certified Design Expert (CCDE v3.1)

Architecting Enterprise Ecosystems: Why Strategic Design Principles Defeat Static Memory Dumps

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Question # 91

which two actions must be taken when assessing an existing wireless network implementation for its readliness to support voice traffic? (choose two)

A.

Validate antenna settings on APs

B.

Verify that RX level are not above -6WBm.

C.

Analyze typical roaming delays.

D.

Identify frequent TX power changes.

E.

Check for high channel utilization

Question # 92

Drag and drop the high-level descriptions of network automation and network orchestration on the left to the corresponding category on the right in no particular order.

Question # 93

Two companies need to implement an extranet overlay network solution by using a VPN tunnel over the internet to use each other ' s HTTP REST APIs. The solution must only provide data integrity because data confidentiality will be covered at the application layer The existing firewall devices will be used as VPN endpoints for the tunnel but they have limited available resources Which type of VPN tunnel must be deployed for the extranet service?

A.

GRE olPsec

B.

GRE tunnel

C.

IPsec ESP

D.

IPsec AH

Question # 94

Which optimal use of interface dampening on a fast convergence network design is true?

A.

When occasional flaps of long duration occur

B.

When numerous adjacent flaps of very short duration occur

C.

When the router hardware is slower than the carrier delay down detection

D.

When the switch hardware is faster than the debounce timer down detection

Question # 95

The network team in XYZ Corp wants to modernize their infrastructure and is evaluating an implementation and migration plan to allow integration MPLS-based, Layer 2 Ethernet services managed by a service provider to connect branches and remote offices. To decrease OpEx and improve

response times when network components fail, XYZ Corp decided to acquire and deploy new routers. The network currently is operated over E1 leased lines (2 Mbps) with a managed CE service provided by the telco.

Drag and drop the implementation steps from the left onto the corresponding targets on the right in the correct order.

Question # 96

Refer to the exhibit.

Refer to the exhibit. Two data center sites (X and Y) connect to the Internet and each other using a backdoor link. Both advertise the same IP prefix (100.75.10.0/23) to the Internet. Firewalls are behind R1 and R2.

Problem: When users attempt to reach 100.75.10.0/23, the return traffic is routed to Site-Y, regardless of where the session originated. This results in asymmetric traffic and potentially broken sessions due to firewall behavior.

Which design resolves the issue?

A.

Use BGP MED to influence Site-X return traffic. Change the IP address scheme of both sites.

B.

Change the Site-Y firewall configuration to replicate the Site-X configuration. Advertise the low MED attribute on Site-X to the Internet.

C.

Add a static route toward the Internet on Site-X. Change the DNS policy on Site-Y to block traffic.

D.

Establish control plane peering between edge routers. Have Site-X advertise an IP pool with a longer prefix.

Question # 97

What is a description of a control plane action?

A.

De-encapsulating and re-encapsulating a packet in a data-link frame

B.

Matching the destination MAC address of an Ethernet frame to the MAC address table

C.

Matching the destination IP address of an IP packet to the IP routing table

D.

Hosts locating routers that reside on attached links using the IPv6 Neighbor Discovery Protocol

Question # 98

A software-defined networking (SDN) controller learns network topology information by using BGP link-state sessions with the route reflectors of an MPLS-enabled network. The controller then uses the topology information to apply on-demand traffic policies to the network through a protocol that is supported from all Layer 3 routers. Each policy is represented as a RIB entry in the control plane of the router. Which SDN model has been implemented?

A.

SDN centralized

B.

SDN traffic engineering

C.

SD-WAN

D.

SDN hybrid

Question # 99

Drag and drop the right functional descriptions from the left onto the corresponding protocols on the right.

Question # 100

A company plans to use BFD between its routers to detect a connectivity problem inside the switched network. An IPS is transparently installed between the switches. Which packets should the IPS forward for BFD to work under all circumstances?

A.

Fragmented packet with the do-not-fragment bit set

B.

IP packets with broadcast IP source addresses

C.

IP packets with the multicast IP source address

D.

IP packet with the multicast IP destination address

E.

IP packets with identical source and destination IP addresses

F.

IP packets with the destination IP address 0.0.0.0.

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