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Cisco Designing Cisco Enterprise Networks Sample Questions (Q167-Q172):

NEW QUESTION # 167
An engineer working for a service provider with an employee ID 4598.48.606 prepared several designs for a traditional campus network. The design must allow the deployment on the same VXLAN to any switch at the access layer and must support:
* Fast convergence
* High availability
* Resilience
Which design must be selected?

A. Option B
B. Option D
C. Option C
D. Option A

Answer: D

Explanation:
The selected design is correct because the requirement describes a resilient campus architecture that must support the same VXLAN at any access-layer switch while maintaining fast convergence and high availability. In Cisco campus and data-center-style fabric designs, VXLAN provides network virtualization by carrying Layer 2 adjacency over a routed or resilient transport. The correct design must avoid a fragile single spanning-tree domain and must provide redundant forwarding paths so that an access switch or uplink failure does not isolate the VLAN or VXLAN segment. The selected option represents the design that meets those conditions by allowing the overlay segment to be extended consistently across access switches while keeping the underlay resilient. Designs that rely on a traditional Layer 2 tree, a single aggregation point, or blocked redundant links would not meet the high availability and fast convergence objectives. The important design principle is that VXLAN should ride on a stable, redundant transport and should not depend on large Layer 2 failure domains. Reference topics: VXLAN campus design, overlay networking, fast convergence, access- layer resiliency, high availability.

NEW QUESTION # 168
Refer to the exhibit.

A customer is running HSRP on the core routers. Over time the company has grown and requires more network capacity. In the current environment, some of the downstream interfaces are almost fully utilized, but others are not. Which solution improves the situation?

A. Make router R2 active for half of the VLANs.
B. Configure port channel toward downstream switches.
C. Add more interfaces to R1 and R2.
D. Enable RSTP on the downstream switches.

Answer: A

NEW QUESTION # 169
What is the main purpose of the Cisco SD-Access underlay design?

A. to support advanced firewall and IPS features
B. to optimize network traffic routing and load-balancing
C. to provide network segmentation and isolation for security
D. to enable automated network provisioning and configuration

Answer: B

Explanation:
The main purpose of the Cisco SD-Access underlay design is to provide a scalable and optimized foundation for network traffic routing and load balancing. The underlay network is the physical infrastructure that supports the SD-Access fabric and allows efficient transport of data across different parts of the network. It helps with optimizing traffic flow, ensuring that data is routed effectively and with low latency, which is critical for supporting the overall network design.

NEW QUESTION # 170
Which statements about RSPAN are true? (Choose two.)

A. RSPAN VLANS can carry RSPAN traffic only.
B. RSPAN uses are GRE tunnel to transmit captured traffic.
C. RSPAN VLANs are exempt from VTP pruning.
D. It supports MAC address learning.
E. only one RSPAN VLAN can be configured per device.
F. MAC address learning is not supported

Answer: A,F

Explanation:
The RSPAN VLAN carries SPAN traffic between RSPAN source and destination sessions. It has these special characteristics:
All traffic in the RSPAN VLAN is always flooded.
No MAC address learning occurs on the RSPAN VLAN.
RSPAN VLAN traffic only flows on trunk ports.
RSPAN VLANs must be configured in VLAN configuration mode by using the remote-span VLAN configuration mode command.
STP can run on RSPAN VLAN trunks but not on SPAN destination ports.
An RSPAN VLAN cannot be a private-VLAN primary or secondary VLAN.
For VLANs 1 to 1005 that are visible to VLAN Trunking Protocol (VTP), the VLAN ID and its associated RSPAN characteristic are propagated by VTP. If you assign an RSPAN VLAN ID in the extended VLAN range (1006 to 4094), you must manually configure all intermediate switches.
It is normal to have multiple RSPAN VLANs in a network at the same time with each RSPAN VLAN defining a network-wide RSPAN session. That is, multiple RSPAN source sessions anywhere in the network can contribute packets to the RSPAN session. It is also possible to have multiple RSPAN destination sessions throughout the network, monitoring the same RSPAN VLAN and presenting traffic to the user. The RSPAN VLAN ID separates the sessions.
Reference:
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12-2_40_se/configuration/ guide/scg/swspan.pdf

NEW QUESTION # 171
Refer to the exhibit.

Which solution decreases the EIGRP convergence time?

A. Enable subsecond timers
B. Increase the dead timer value
C. Enable stub routing on the spokes
D. Increase the hold time value

Answer: C

NEW QUESTION # 172
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