Cisco CCNP Enterprise 350-401 Questions & Answers

• Question 1071:

  Refer to the exhibit.

  

  After implementing the configuration 172.20.20.2 stops replaying to ICMP echoes, but the default route fails to be removed. What is the reason for this behavior?

  A. The source-interface is configured incorrectly.

  B. The destination must be 172.30.30.2 for icmp-echo

  C. The default route is missing the track feature

  D. The threshold value is wrong.

  Correct Answer: C

  The last command should be "R1(config)#ip route 0.0.0.0 0.0.0.0 172.20.20.2 track 10".

• Question 1072:

  What does Call Admission Control require the client to send in order to reserve the bandwidth?

  A. SIP flow information

  B. Wi-Fi multimedia

  C. traffic specification

  D. VoIP media session awareness

  Correct Answer: C

• Question 1073:

  Which entity is responsible for maintaining Layer 2 isolation between segments In a VXLAN environment?

  A. switch fabric

  B. VTEP

  C. VNID

  D. host switch

  Correct Answer: C

  VXLAN uses an 8-byte VXLAN header that consists of a 24-bit VNID and a few reserved bits. The VXLAN header together with the original Ethernet frame goes in the UDP payload. The 24-bit VNID is used to identify Layer 2 segments and to maintain Layer 2 isolation between the segments. Reference: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/vxlan/configuration/guide/b_Cisco_Nexus_9000_Series_NX- OS_VXLAN_Configuration_Guide_7x/b_Cisco_Nexus_9000_Series_NXOS_VXLAN_Configuration_Guide_7x_chapter_010.html

• Question 1074:

  After a redundant route processor failure occurs on a Layer 3 device, which mechanism allows for packets to be forwarded from a neighboring router based on the most recent tables?

  A. RPVST+

  B. NSF

  C. BFD

  D. RP failover

  Correct Answer: B

  It's NSF https://www.youtube.com/watch?v=Dm-3UxiKPtc

• Question 1075:

  How does EIGRP differ from OSPF?

  A. EIGRP is more prone to routing loops than OSPF

  B. EIGRP has a full map of the topology, and OSPF only knows directly connected neighbors

  C. EIGRP supports equal or unequal path cost, and OSPF supports only equal path cost.

  D. EIGRP uses more CPU and memory than OSPF

  Correct Answer: C

  Reference: https://www.cisco.com/c/en/us/support/docs/ip/enhanced-interior-gateway-routing-protocol-eigrp/13677-19.html

• Question 1076:

  A network engineer configures a new GRE tunnel and enters the show run command. What does the output verify?

  

  A. The tunnel will be established and work as expected

  B. The tunnel destination will be known via the tunnel interface

  C. The tunnel keepalive is configured incorrectly because they must match on both sites

  D. The default MTU of the tunnel interface is 1500 byte.

  Correct Answer: B

  Some have brought up the fact that the default route will have the preferred AD of 1. While this is true, it is forgetting the path selection order:

  1: Prefer the most specific route - Longest Match

  2: Prefer the lowest Administrative Distance - Most Trusted Routing Protocol

  3: Prefer the lowest Metric - Shortest Calculated Distance/Cost

  In other words, while the default route is going to have an AD of 1, the more specific destination address is going to be learned from OSPF through the Tunnel. The Source Router is going to learn the more specific route and prefer it over the default route, causing the recursive routing error.

• Question 1077:

  Refer to the exhibit.

  1.

  When a device is connected, the port transitions immediately to a forwarding state.

  2.

  The interface should not send or receive BPDUs.

  3.

  If a BPDU is received, it continues operating normally.

  

  Rapid PVST+ is enabled on all switches. Which command set must be configured on switch1 to achieve the following results on port fa0/1?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: B

  BPDU filtering allows you to avoid transmitting BPDUs on PortFast-enabled ports that are connected to an end system. When you enable PortFast on the switch, spanning tree places ports in the forwarding state immediately, instead of going through the listening, learning, and forwarding states.

  By default, spanning tree sends BPDUs from all ports regardless of whether PortFast is enabled. BDPU filtering is on a per-switch basis; after you enable BPDU filtering, it applies to all PortFast-enabled ports on the switch.

• Question 1078:

  Refer to the exhibit.

  

  Which two commands are needed to allow for full reachability between AS 1000 and AS 2000? (Choose two.)

  A. R2#no network 10.0.0.0 255.255.255.0

  B. R2#network 209.165.201.0 mask 255.255.192.0

  C. R2#network 192.168.0.0 mask 255.255.0.0

  D. R1#no network 10.0.0.0 255.255.255.0

  E. R1#network 192.168.0.0 mask 255.255.0.0

  Correct Answer: AC

  A and C are correct. Need to negate the 10.0.0.0 /24 network on R2 and then add the 192.168.0.0 /16 network on R2. Hence, A and C, although I think to be exact the answer on A should be "no network 10.0.0.0 mask 255.255.255.0" vs. the "no network 10.0.0.0 255.255.255.0".

• Question 1079:

  Refer to the exhibit.

  

  MTU has been configured on the underlying physical topology, and no MTU command has been configured on the tunnel interfaces. What happens when a 1500-byte IPv4 packet traverses the GRE tunnel from host X to host Y, assuming the DF bit is cleared?

  A. The packet arrives on router C without fragmentation.

  B. The packet is discarded on router A

  C. The packet is discarded on router B

  D. The packet arrives on router C fragmented.

  Correct Answer: D

  

• Question 1080:

  Refer to the exhibit.

  

  Which configuration allows Customer2 hosts to access the FTP server of Customer1 that has the IP address of 192.168.1.200?

  A. ip route vrf Customerl 172.16.1.0 255.255.255.0 172.16.1.1 global ip route vrf Customer 192.168.1.200 255.255.255.255 192.168.1.1 global ip route 192.168.1.0 255.255.255.0 VlanlO ip route 172.16.1.0 255.255.255.0 Vlan20

  B. ip route vrf Customerl 172.16.1.0 255.255.255.0 172.16.1.1 Customer2 ip route vrf Customer 192.168.1.200 255.255.255.255 192.168.1.1 Customerl

  C. ip route vrf Customerl 172.16.1.0 255.255.255.0 172.16.1.1 Customerl ip route vrf Customer 192.168.1.200 255.255.255.255 192.168.1.1 Customer2

  D. ip route vrf Customerl 172.16.1.1 255.255.255.255 172.16.1.1 global ip route vrf Customer 192.168.1.200 255.255.255.0 192.168.1.1 global ip route 192.168.1.0 255.255.255.0 VlanlO ip route 172.16.1.0 255.255.255.0 Vlan20

  Correct Answer: A

  https://www.cisco.com/c/en/us/support/docs/ip/ip-routing/200158-Configure-Route-Leaking-between-Global-a.html