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By cisco
Aug, 2025

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Question 76

Refer to the exhibit. A new TAC engineer came to you for advice. A GRE over IPsec tunnel was configured, but the tunnel is not coming up.
What did the TAC engineer configure incorrectly?

Image 1
  • A: The crypto isakmp configuration is not correct.
  • B: The crypto map configuration is not correct.
  • C: The network 172.16.1.0 is not included in the OSPF process.
  • D: The interface tunnel configuration is not correct.

Question 77

What two features are benefits of using GRE tunnels with IPsec over using an IPsec tunnel alone in building-to-building site-to-site VPNs? (Choose two.)

  • A: Allows dynamic routing securely over the tunnel
  • B: IKE keepalives are unidirectional and sent every ten seconds
  • C: Reduces IPsec headers overhead since tunnel mode is used
  • D: Supports non-IP traffic over the tunnel
  • E: uses Virtual Tunnel Interface (VTI) to simplify the IPsec VPN configuration AD

Question 78

Which two statement about GRE tunnel interface are true? (Choose two.)

  • A: A tunnel can be established when a source the source interface is in the up/down state
  • B: A tunnel Destination must be Routable, but it can be unreachable
  • C: To establish a tunnel the source interface must be a loopback
  • D: To Establish a tunnel the source interface must be up/up state
  • E: A tunnel destination must be a physical interface that is on up/up state BD

Question 79

Which two statements about EVN are true? (Choose two.)

  • A: Virtual network tags are assigned per-VRF.
  • B: It is supported only on access ports.
  • C: Virtual network tags are assigned globally.
  • D: Routing metrics can be manipulated only from directly within the routing-context configuration.
  • E: The VLAN ID in the 802.1q frame carries the virtual network tag.
  • F: The VLAN ID is the ISL frame carries the virtual network tag. AE

Question 80

Which three problems result from application mixing of UDP and TCP streams within a network with no QoS? (Choose three.)

  • A: starvation
  • B: jitter
  • C: latency
  • D: windowing
  • E: lower throughput

Question 81

When unicast reverse path forwarding is configured on an interface, which action does the interface take first when it receives a packet?

  • A: It verifies that the source has a valid CEF adjacency.
  • B: It checks the egress access lists.
  • C: It verifies a reverse path via the FIB to the source.
  • D: It checks the ingress access lists.

Question 82

Other than a working EIGRP configuration, which components must be the same on all routers for EIGRP authentication key rollover to work correctly?

  • A: SMTP
  • B: time
  • C: SNMP
  • D: passwords B

Question 83

Which access list used to filter upper layer protocol?

  • A: Extended acl
  • B: Standart acl
  • C: Reflexive acl
  • D: Time based acl
  • E: Dynamic acl A

Question 84

Which option is one way to mitigate symmetric routing on an active/active firewall setup for TCP-based connections?

  • A: Performing packet captures
  • B: Disabling asr-group commands on interfaces that are likely to receive asymmetric traffic
  • C: Replacing them with redundant routers and allowing load balancing
  • D: Disabling stateful TCP checks

Question 85

Which configuration is applied to a device so that it blocks outbound web traffic on Saturdays and Sundays between the hours of 1:00 AM and 11:59 PM?

  • A: time-range SATSUN absolute Saturday Sunday 1:00 to 23:59 access-list 102 deny tcp any any eq 80 time-range SATSUN access-list 102 deny tcp any any eq 443 time-range SATSUN interface Vlan303 ip address 10.9.5.3 255.255.255.0 ip access-group 102 in
  • B: time-range SATSUN periodic Saturday Sunday 1:00 to 23:59 access-list 102 deny tcp any any eq 80 time-range SATSUN access-list 102 deny tcp any any eq 443 time-range SATSUN interface VLAN303 ip address 10.9.5.3 255.255.255.0 ip access-group 102 in
  • C: time-range SATSUN periodic Saturday Sunday 1:00 to 11:59 access-list 102 deny tcp any any eq 80 time-range SATSUN access-list 102 deny tcp any any eq 443 time-range SATSUN interface Vlan303 ip address 10.9.5.3 255.255.255.0 ip access-group 102 in
  • D: time-range SATSUN periodic Saturday Sunday 1:00 to 23:59 access-list 102 deny udp any any eq 80 time-range SATSUN access-list 102 deny tcp any any eq 443 time-range SATSUN interface Vlan303 ip address 10.9.5.3 255.255.255.0 ip access-group 102 out

Question 86

Which two different configurations can you apply to a device to block incoming SSH access? (Choose two.)
A.

Image 1

B.

Image 2

C.

Image 3

D.

Image 4

E.

Image 5

Question 87

Refer to Exhibit.

Image 1

Which two reasons for IP SLA tracking failure are likely true? (Choose two.)

  • A: The source-interface is configured incorrectly.
  • B: The destination must be 172.30.30.2 for icmp-echo.
  • C: A route back to the R1 LAN network is missing in R2.
  • D: The default route has wrong next hop IP address.
  • E: The threshold value is wrong. AC

Question 88

Which option is a prerequisite for stateful NAT64?

  • A: IPsec for IPv6
  • B: DNS64
  • C: Application Layer Gateway
  • D: ICMP64

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