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New Cisco 300-320 Exam Dumps Collection (Question 4 - Question 13)

New Questions 4

Which security mechanism can you implement to protect the OSPF" information that a router receives?

A. privilege 15 credentials

B. administrator username and password authentication

C. RADIUS authentication

D. cryptographic authentication

Answer: D


New Questions 5

What is the outcome when RPF check passes successfully? (E)

A. Packet is dropped because it arrived on the interface that used to forward the packet back to source.

B. Packet is dropped because it arrived on the interface that used to forward the packet back to destination.

C. Packet is forwarded because it arrived on the interface that used to forward the packet back to destination

D. Packet is forwarded because it arrived on the interface that used to forward the packet back to source

Answer: D


New Questions 6

An engineer is considering uplink bandwidth over-subscription in a Layer 3 network design. Which option is the Cisco recommended over-subscription ratio for uplinks between the distribution and core layers?

A. 3 to 1

B. 4 to 1

C. 6 to 1

D. 8 to 1

Answer: B


New Questions 7

Which two technologies that can be used to connect data centers over an IP network and provide

layer 2 LAN extension?

A. IS-IS

B. VXLAN

C. TRILL

D. Fabric Path

E. OTV

Answer: B,E


New Questions 8

Which two features can you implement to control which networks are advertised by a BGP router? (Choose two.)

A. prefix lists

B. route maps

C. policy maps

D. router SNMP statements

E. crypto maps

Answer: A,B


New Questions 9

A network consultant is designing an Internet Edge solution and is providing the details around the flows supporting a local Internet Proxy. How is on-premises web filtering supported?

A. A cisco ASA uses an IPS module to inspect HTTP and HTTPS traffic.

B. A Cisco ASA redirects HTTP and HTTPS traffic to the WSA using WCCP.

C. A Cisco ASA connects to the web security appliance via TLS to monitor HTTP and HTTPS traffic.

D. A Cisco ASA redirects HTTP and HTTPS traffic to CWS with a Web Security Connector.

Answer: B


New Questions 10

When a site has Internet connectivity with two different ISPu2021s, which two strategies are recommended to avoid becoming a BGP transit site? (Choose two.)

A. accept all inbound routes from ISPs

B. advertise all routes to both ISPs.

C. filter routes inbound from the ISPs.

D. filter routes outbound to the ISPs.

E. use a single service provider.

Answer: A,D


New Questions 11

You use 2x ISPs for the internet connectivity. How could you avoid your internal network to become a transit area (Choose two)?

A. accept all routes from ISPs inbound

B. advertise all routes outbound

C. filter internal routes inbound

D. filter internal routes outbound

E. use just one ISP

Answer: A,D

Explanation:

When connecting to multiple exit points from your AS and peering with multiple ISPs, there is a danger that by misconfiguration, you advertise routes that are received from one ISP to the other ISP. Your AS can become a transit area for Internet traffic of other networks, which can cost you money and resources. You can easily avoid this situation by advertising only your assigned address space to all

adjacent ISPs (also, you can advertise only your local AS and filter out the other ASs using BGP AS-path filter).

From a design point of view, this model (Multi-homing with Two ISPs) requires careful design consideration. For example, to avoid making the enterprise network as a transit AS/path for the two external ISPs (for example, ISP1 and ISP2), it is recommended that you always announce only your PI address space to the ISPs you are directly connected to. If, by mistake, you advertise routes that are received from ISP1 to ISP2, and ISP2u2021s policy is not restrictive enough, your AS will start to participate in the Internet traffic exchange (become a transit AS). In addition, if AS X, as shown in Figure 5-23, decided that the path to ISP1 from AS X is shorter through your network (via ISP2), it will start sending traffic that is destined for ISP1 to your router. Your router will happily route the traffic to ISP1, but the problem is that this extra traffic might leave your users with no bandwidth for themselves and, as a result, it will impact the overall user experience. Also, this situation raises a high security concern, because external traffic from an unknown network, traffic that could be malicious, will be using your corporate network as a transit path. Therefore, you, as the network designer, need to ensure that only the enterprise-owned PI address range is announced, combined with AS PATH filtering to permit only routes originating from the enterprise local AS to be advertised.

To prevent your network from becoming a transit AS, make sure that you advertise only your own PI address space to both ISPs by using outbound route filtering, BGP AS-PATH filtering, or a combination of both.


New Questions 12

An engineer is designing a multitenant network that requires giving appropriate permission to limit access

Which policy you choose?

A. vty base policy

B. role base policy

C. Route map

D. RBAC

Answer: A


New Questions 13

An engineer is designing a network using RSTP. Several devices on the network support only legacy STP. Which outcome occurs?

A. RSTP and STP choose the protocol with the best performance.

B. RSTP and STP interoperate and fast convergence is achieved.

C. RSTP and STP are not compatible and legacy ports error disable.

D. RSTP and STP interoperate, but the fast convergence is not used.

Answer: D


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