CCIE Enterprise Infrastructure Practice Test
Exam
1. In a Cisco SD-WAN architecture, which component is
responsible for the control plane and distributes routing policies
to WAN Edge routers?
A) vManage
B) vBond
C) vSmart
D) vEdge
Correct Answer: C
Rationale: vSmart is the control plane component in SD-WAN
and uses OMP to distribute routes, security, and policy
information. vManage is the management plane and vBond is
the orchestration plane.
2. What is the primary advantage of Multichassis EtherChannel
(MEC) in a VSS or StackWise Virtual environment?
A) It allows load balancing across multiple chassis using a single
logical port channel
,B) It completely eliminates the need for Spanning Tree Protocol
C) It provides Layer 3 routing between chassis without
configuration
D) It automatically encrypts all traffic between member
switches
Correct Answer: A
Rationale: MEC allows a single logical port channel to span
multiple physical chassis, providing cross-chassis load balancing
and redundancy. It does not eliminate STP, does not
automatically provide Layer 3 routing, and does not encrypt
traffic.
3. What is a key difference between OSPFv3 and OSPFv2?
A) OSPFv3 only uses MD5 authentication
B) OSPFv3 uses address family configuration to support multiple
address families such as IPv6 and IPv4
C) OSPFv3 does not support route summarization
D) OSPFv3 uses a different SPF algorithm than OSPFv2
Correct Answer: B
,Rationale: OSPFv3 supports multiple address families through
address family configuration mode and can carry both IPv6 and
IPv4 routes. It uses IPsec for authentication, supports
summarization, and uses the same SPF algorithm.
4. In a BGP EVPN VXLAN environment, what is the most likely
reason Type 2 routes for host MAC addresses are not being
advertised between VTEPs at different sites?
A) The vni command is missing under the BGP EVPN address
family
B) ARP suppression is enabled on the VLAN
C) IRB is not configured on the VLAN
D) The advertise host-routes command is missing in the VXLAN
configuration
Correct Answer: A
Rationale: In BGP EVPN, the NVE source interface and VNI must
be explicitly associated with the BGP EVPN address family to
advertise Type 2 and Type 3 routes. ARP suppression does not
prevent route advertisement.
5. What determines an MST region boundary?
, A) A region boundary exists at a port when the MST
configuration digest differs from the neighbor switch
B) A region boundary exists at a port when the spanning-tree
mode mst command is missing on the neighbor
C) A region boundary is defined by a missing revision number in
the MST configuration
D) A region boundary exists at a port when the VLAN to
instance mapping is the same but the region name is different
Correct Answer: D
Rationale: For a port to be considered inside an MST region,
three parameters must match on both ends: region name,
revision number, and VLAN to instance mapping table. Any
mismatch makes the port a region boundary.
6. On a PortChannel, a member port is in the suspended state.
The PortChannel is configured as a trunk allowing VLANs 10
through 50, while the physical member port allows VLANs 10
through 40. What is the reason?
A) Speed and duplex mismatch on the member port
B) The allowed VLAN list of the member port is a subset of the
PortChannel allowed list
Exam
1. In a Cisco SD-WAN architecture, which component is
responsible for the control plane and distributes routing policies
to WAN Edge routers?
A) vManage
B) vBond
C) vSmart
D) vEdge
Correct Answer: C
Rationale: vSmart is the control plane component in SD-WAN
and uses OMP to distribute routes, security, and policy
information. vManage is the management plane and vBond is
the orchestration plane.
2. What is the primary advantage of Multichassis EtherChannel
(MEC) in a VSS or StackWise Virtual environment?
A) It allows load balancing across multiple chassis using a single
logical port channel
,B) It completely eliminates the need for Spanning Tree Protocol
C) It provides Layer 3 routing between chassis without
configuration
D) It automatically encrypts all traffic between member
switches
Correct Answer: A
Rationale: MEC allows a single logical port channel to span
multiple physical chassis, providing cross-chassis load balancing
and redundancy. It does not eliminate STP, does not
automatically provide Layer 3 routing, and does not encrypt
traffic.
3. What is a key difference between OSPFv3 and OSPFv2?
A) OSPFv3 only uses MD5 authentication
B) OSPFv3 uses address family configuration to support multiple
address families such as IPv6 and IPv4
C) OSPFv3 does not support route summarization
D) OSPFv3 uses a different SPF algorithm than OSPFv2
Correct Answer: B
,Rationale: OSPFv3 supports multiple address families through
address family configuration mode and can carry both IPv6 and
IPv4 routes. It uses IPsec for authentication, supports
summarization, and uses the same SPF algorithm.
4. In a BGP EVPN VXLAN environment, what is the most likely
reason Type 2 routes for host MAC addresses are not being
advertised between VTEPs at different sites?
A) The vni command is missing under the BGP EVPN address
family
B) ARP suppression is enabled on the VLAN
C) IRB is not configured on the VLAN
D) The advertise host-routes command is missing in the VXLAN
configuration
Correct Answer: A
Rationale: In BGP EVPN, the NVE source interface and VNI must
be explicitly associated with the BGP EVPN address family to
advertise Type 2 and Type 3 routes. ARP suppression does not
prevent route advertisement.
5. What determines an MST region boundary?
, A) A region boundary exists at a port when the MST
configuration digest differs from the neighbor switch
B) A region boundary exists at a port when the spanning-tree
mode mst command is missing on the neighbor
C) A region boundary is defined by a missing revision number in
the MST configuration
D) A region boundary exists at a port when the VLAN to
instance mapping is the same but the region name is different
Correct Answer: D
Rationale: For a port to be considered inside an MST region,
three parameters must match on both ends: region name,
revision number, and VLAN to instance mapping table. Any
mismatch makes the port a region boundary.
6. On a PortChannel, a member port is in the suspended state.
The PortChannel is configured as a trunk allowing VLANs 10
through 50, while the physical member port allows VLANs 10
through 40. What is the reason?
A) Speed and duplex mismatch on the member port
B) The allowed VLAN list of the member port is a subset of the
PortChannel allowed list
