Question 1

You are designing the QoS policy for a company that is running many TCP-based applications. The company is experiencing tail drops for these applications. The company wants to use a congestion avoidance technique for these applications. Which QoS strategy can be used to fulfill the requirement?

Options :

A : weighted fair queuing

B : weighted random early detection

C : low-latency queuing

D : first-in first-out

Answer: B

Question 2

Company XYZ runs OSPF in their network. A design engineer decides to implement hot-potato routing architecture. How can this implementation be achieved?

Options :

A : Enable iBGP and apply prepend to ensure all prefixes will have the same length of the AS path attribute value.

B : Redistribute the external prefixes onto OSPF and ensure the total metric calculation includes only the ext value and the value is the same in all ASBRs.

C : Enable OSPF load-balancing over unequal cost path.

D : Redistribute the external prefixes onto OSPF and ensure that the total metric calculation includes external internal values.

Answer: D

Question 3

A customer migrates from a traditional Layer 2 data center network into a new SDN-based, spine-and-leaf VXLAN EVPN data center within the same location. The networks are joined to enable host migration at Layer 2. What is the final migration step, after hosts have physically migrated, to have traffic flowing through the new network without changing any host configuration?

Options :

A : Increase VRRP priorities on new infrastructure over legacy VRRP values, then shut down legacy SVIs.

B : Shut down legacy Layer 3 SVIs and activate new preconfigured Layer 3 SVIs on VXLAN.

C : Shut down legacy infrastructure to allow VXLAN gateways to become active.

D :

Shut down legacy Layer 3 SVIs, clear ARP caches on all hosts being migrated, and then configure the legacy VRRP address onto new VXLAN core switches.

Answer: D

Question 4

Which solution provides an active/active alternative to spanning-tree?

Options :

A : RSTP

B : TRILL

C : MST

D : Ethernet Ring Protection Switching

Answer: B

Question 5

When designing fast convergence on a network using a loop-free alternate, on which two bases can the next-hop routes be precomputed? (Choose two.)

Options :

A : per neighbor

B : per failure type

C : per prefix

D : per link

E : per network type

Answer: C,D