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Cisco 350-501 Exam
Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) (Page 4 )

Updated On: 12-Feb-2026
Page 4 of 81
PDF with 547 Questions

Refer to the exhibits.

Which information is provided for traceback analysis when this configuration is applied?

  1. source interface
  2. packet size distribution
  3. IP sub flow cache
  4. BGP version

Answer(s): A



Refer to the exhibit.


R1 is connected to two service providers and is under a DDoS attack.
Which statement about this design is true if URPF in strict mode is configured on both interfaces?

  1. R1 drops all traffic that ingresses either interface that has a FIB entry that exits a different interface.
  2. R1 drops destination addresses that are routed to a null interface on the router.
  3. R1 permits asymmetric routing as long as the AS-PATH attribute entry matches the connected AS.
  4. R1 accepts source addresses on interface gigabitethernet0/1 that are private addresses.

Answer(s): A



Refer to the exhibit.

Router 1 was experiencing a DDoS attack that was traced to interface gigabitethernet0/1. Which statement about this configuration is true?

  1. Router 1 accepts all traffic that ingresses and egresses interface gigabitethernet0/1.
  2. Router 1 drops all traffic that ingresses interface gigabitethernet0/1 that has a FIB entry that exits a different interface.
  3. Router 1 accepts source addresses that have a match in the FIB that indicates it is reachable through a real interface.
  4. Router 1 accepts source addresses on interface gigabitethernet0/1 that are private addresses.

Answer(s): C


Reference:

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/4_1/nx-os/security/configuration/guide/sec_nx-os-cfg/sec_urpf.html



Refer to the exhibit.


An engineer is preparing to implement data plane security configuration. Which statement about this configuration is true?

  1. Router 2 is the router receiving the DDoS attack.
  2. Router 1 must be configured with uRPF for the RTBH implementation to be effective.
  3. Router 1 is the trigger router in a RTBH implementation.
  4. Router 2 must configure a route to null 0 for network 192.168.1.0/24 for the RTBH implementation to be complete.

Answer(s): A



Which configuration modifies Local Packet Transport Services hardware policies?





Answer(s): C


Reference:

https://www.cisco.com/c/en/us/td/docs/routers/crs/software/crs_r4-1/addr_serv/command/reference/b_ipaddr_cr41crs/b_ipaddr_cr41crs_chapter_0111.html#wp1754734006






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