Cisco ENCOR Ultimate 3 — Questions and Answers
Question 1: Which IPv6 address type is automatically assigned to every IPv6-enabled interface and is used for neighbor discovery and routing protocol communications on the local link?
- Global Unicast
- Unique Local
- Link-Local (FE80::/10) (Correct answer)
- Anycast
Correct answer: Link-Local (FE80::/10)
Link-local addresses in the FE80::/10 range are automatically configured on every IPv6 interface and are used for NDP, routing protocol hellos, and default gateway communication.
Question 2: In Cisco DNA Center, which intent-based networking workflow automates the provisioning of network devices according to predefined design templates?
- Assurance
- Policy
- Provision (Correct answer)
- Design
Correct answer: Provision
The Provision workflow in DNA Center deploys network profiles and templates to devices, automating day-0 and day-1 configuration based on the Design and Policy settings.
Question 3: Which BGP attribute is used to influence inbound traffic from external autonomous systems by prepending the local AS number in the AS_PATH attribute?
- Local Preference
- MED (Multi-Exit Discriminator)
- AS Path Prepending (Correct answer)
- Weight
Correct answer: AS Path Prepending
AS Path Prepending artificially lengthens the AS_PATH by repeating the local AS number, making the path appear less preferred to external BGP peers.
Question 4: A router interface is configured with 'ip helper-address'. Which protocol does this primarily assist?
- OSPF neighbor discovery
- DHCP relay for broadcast forwarding (Correct answer)
- DNS resolution
- NTP time synchronization
Correct answer: DHCP relay for broadcast forwarding
The 'ip helper-address' command converts DHCP broadcast requests into unicast packets forwarded to the specified DHCP server address.
Question 5: What is the primary function of LISP (Locator/ID Separation Protocol) in a campus fabric deployment?
- Encrypting all inter-VLAN traffic
- Separating endpoint identity (EID) from routing location (RLOC) to enable mobility (Correct answer)
- Replacing OSPF as the campus routing protocol
- Providing QoS markings for campus traffic
Correct answer: Separating endpoint identity (EID) from routing location (RLOC) to enable mobility
LISP separates the endpoint identifier (EID) from its topological location (RLOC), enabling seamless endpoint mobility across different fabric sites.
Question 6: Which Python library is Cisco's preferred SDK for automating network devices using NETCONF?
- Paramiko
- ncclient (Correct answer)
- Netmiko
- PyEZ
Correct answer: ncclient
ncclient is a Python library specifically designed to interact with NETCONF-enabled network devices using YANG data models.
Question 7: In DMVPN Phase 3, which feature enables spoke-to-spoke tunnels while allowing hierarchical summarization at the hub?
- NHRP Redirect and Shortcut (Correct answer)
- mGRE with IPsec
- OSPF stub area configuration
- PBR at the hub
Correct answer: NHRP Redirect and Shortcut
NHRP Redirect messages from the hub combined with NHRP Shortcut at spokes enable direct spoke-to-spoke tunnels while the hub can still advertise summarized routes.
Cisco ENCOR Ultimate 3
Which IPv6 address type is automatically assigned to every IPv6-enabled interface and is used for neighbor discovery and routing protocol communications on the local link?