Exam 350-401 topic 1 question 675 discussion

We should not implement security features at the core as it would reduce the speed in this layer -> Answer B is not correct. It is a recommended practice to configure summarization in a large network from the distribution layers toward the core. Implementing summarization at the distribution layer optimizes the convergence process -> Answer C is correct while answer E is not correct. Reference: https://www.ccexpert.us/network-design/route-summarization.html Also in the above link, it is recommended to configure “Passive Interfaces for IGP at the Access Layer”, not “nontransit links” which makes answer A to be not correct. “As a best practice for ECMP-based Layer 3 networks, Cisco recommends fine-tuning Cisco Express Forwarding load balancing to include Layer 3 and Layer 4 tuple inclusion to compute and derive the first phase of the optimal forwarding decision process between two upstream Layer 3 MEC interfaces.” -> Answer D is correct. Reference: https://www.cisco.com/c/dam/global/shared/assets/pdf/cisco_enterprise_campus_infrastructure_design_guide.pdf

C & D are correct https://www.ciscopress.com/articles/article.asp?p=1315434&seqNum=3 https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipswitch_cef/configuration/15-mt/isw-cef-15-mt-book/isw-cef-load-balancing.html https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Campus/HA_campus_DG/hacampusdg.html

A and C

A and C

i will go with A and C

I will go for AC

BC. Implement security at the core in a capmus layer 3 infrastructure from Cisco official training.

D is a catch since fine tuning ECMP hash is not required, you just need to have it in place. https://www.cisco.com/c/dam/global/shared/assets/pdf/cisco_enterprise_campus_infrastructure_design_guide.pdf Nowhere in the guide you can find "fine tune" part.

CD are correct https://www.ciscopress.com/articles/article.asp?p=1315434&seqNum=3

CD https://www.ciscopress.com/articles/article.asp?p=1315434&seqNum=3 A. C is implemented in the routing protocol design, but configuring the passive interface for A requires manual operation on the port, so it is not the best method.

As a best practice for ECMP-based Layer 3 networks, Cisco recommends fine-tuning Cisco Express Forwarding load balancing to include Layer 3 and Layer 4 tuple inclusion to compute and derive the first phase of the optimal forwarding decision process between two upstream Layer 3 MEC interfaces.

C, D is correct. https://www.ciscolive.com/c/dam/r/ciscolive/apjc/docs/2019/pdf/BRKCRS-2031.pdf A is incorrect. "Only peer on links that you intend to use as transit" cisco said. In pdf p42, the link are used for L2 transit but configured passive-interface.

Based on these A,C, and D are all true: https://www.ciscopress.com/articles/article.asp?p=1315434&seqNum=3 https://www.cisco.com/c/dam/global/shared/assets/pdf/cisco_enterprise_campus_infrastructure_design_guide.pdf

Could be A,C or D - hopefully Cisco give credit for all three in the exam. https://www.cisco.com/c/dam/global/shared/assets/pdf/cisco_enterprise_campus_infrastructure_design_guide.pdf

https://www.cisco.com/c/dam/global/shared/assets/pdf/cisco_enterprise_campus_infrastructure_design_guide.pdf Block OSPF neighbor processing with passive-mode configuration on physical or logical interfaces connected to non-EIGRP devices in the network, such as PCs, wireless LAN controllers, and so on. This best practice helps reduce CPU utilization and secures the network with unprotected OSPF adjacencies with untrusted devices I think A,C could be the correct answer.

agree with C D. https://www.cisco.com/c/dam/global/shared/assets/pdf/cisco_enterprise_campus_infrastructure_design_guide.pdf