300-320 | Improved 300-320 Exam Study Guides With New Update Exam Questions

Question No: 4

An engineer wants to have a resilient access layer in data center so that switches on the access layer have separate physical connections to a pair of redundant distribution switches. Which technology achieves this goals?

A. PaGP

B. LACP

C. VSL

D. EVPC

E. VSS

F. ECMP

Answer: E

Question No: 5

A company needs to configure a new firewall and have only one public IP address to use in this firewall.

The engineer need to configure the firewall with NAT to handle inbound traffic to the mail server in addition to internet outbound traffic. Which options could he use ? (Choose Two)

A. Static NAT for inbound traffic on port 25

B. Dynamic NAT for outbound traffic

C. Static NAT for outbound traffic on port 25

D. Dynamic NAT for inbound traffic

E. NAT overload for outbound traffic

F. NAT overload for inboud traffic on port 25

Answer: A,E

Question No: 6

Which QoS mechanism uses RSVP?

A. IntServ

B. DiffServ

C. CoS

D. ToS

Answer: A

Question No: 7

To which switch or switches should you provide redundant links in order to achieve high availability with reliable fast convergence in the enterprise campus?

A. to a core switch running Cisco NSF and SSO from redundant distribution switches

connected with a Layer 2 link

B. to a core switch running Cisco NSF and SSO from redundant distribution switches connected with a Layer 3 link

C. to two core switches from redundant distribution switches connected with a Layer 2 link

D. to two core switches from redundant distribution switches connected with a Layer 3 link

E. to two core switches running Cisco NSF and SSO from two redundant distribution switches running Cisco NSF and SSO

Answer: D

Question No: 8

An engineer is designing a QoS architecture for a small organization and must meet these requirements:

*Guarantees resources for a new traffic flow prior to sending

*Polices traffic when the flow does not conform Which QoS architecture model will accomplish this?

A. auto quality of service

B. modular quality of service

C. differentiated services

D. integrated services

Answer: D

Question No: 9

Which two WAN technologies support IEEE 802.1Q, site-to-site connectivity, and point-to- point connectivity between two offices? (Choose two.)

A. Ethernet over MPLS

B. VPLS

C. Layer 3 MPLS

D. DSL

E. cable

Answer: A,B

Question No: 10

Which ISP technology can be implemented as a service when designing a topology to perform extranet

connectivity via multitenant segmentation from within a corporate intranet?

A. Cisco Easy VPN

B. GRE over IPsec

C. MPLS

D. VTI

E. VPNaaS

Answer: C

Question No: 11

An engineer is attempting to improve OSPF network performance and discovers that the entire SPT

recomputes whenever a type 1 or type 2 LSA is received within an area. Which action can optimize SPT operations?

A. Tune LSA throttling thresholds.

B. Enable incremental SPF.

C. Configure totally stubby areas throughout the domain.

D. Summarize networks on all ABRs.

Answer: B

Explanation:

https://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/ospfispf.html#wp1027184

"Benefits of OSPF Incremental SPF OSPF uses Dijkstra's SPF algorithm to compute the shortest path tree (SPT). During the computation of the SPT, the shortest path to each

node is discovered. The topology tree is used to populate the routing table with routes to IP networks. When changes to a Type-1 or Type-2 link-state advertisement (LSA) occur in an area, the entire SPT is recomputed. In many cases, the entire SPT need not be recomputed because most of the tree remains unchanged. Incremental SPF allows the system to recompute only theaffected part of the tree. Recomputing only a portion of the tree rather than the entire tree results in faster OSPF convergence and saves CPU resources. Note that if the change to a Type-1 or Type-2 LSA occurs in the calculating router itself, then the full SPT is performed.

Incremental SPF is scheduled in the same way as the full SPF. Routers enabled with incremental SPF and routers not enabled with incremental SPF can function in the same internetwork."

Question No: 12

What are two characteristics of Server Load Balancing router mode? (Choose two.)

A. The design supports multiple server subnets.

B. An end-user sees the IP address of the real server.

C. SLB routes between the outside and inside subnets.

D. The source or destination MAC address is rewritten, but the IP addresses left alone.

E. SLB acts as a "bump in the wire" between servers and upstream firewall or Layer 3 devices.

Answer: A,C

Question No: 13

Which of the following EIGRP configuration recommendation in layer 3-access switch?

A. Static route...

B. EIGRP stub...

Answer: B