Sample Questions and Answers
Which Cisco feature allows for IP address conservation and security for internal hosts?
NAT (Network Address Translation)
B. DHCP Snooping
C. VTP
D. CDP
Correct Answer: A. NAT (Network Address Translation)
Explanation: NAT translates private internal IP addresses to public IP addresses, conserving address space.
What type of VLAN is used to carry traffic for multiple VLANs between switches?
Trunk VLAN
B. Access VLAN
C. Native VLAN
D. Management VLAN
Correct Answer: A. Trunk VLAN
Explanation: Trunk links carry traffic from multiple VLANs using tagging protocols like 802.1Q.
Which protocol provides dynamic routing for IPv6 networks in Cisco devices?
OSPFv3
B. RIPng
C. EIGRP for IPv6
D. All of the above
Correct Answer: D. All of the above
Explanation: OSPFv3, RIPng, and EIGRP for IPv6 are routing protocols supporting IPv6.
In Cisco design, what is the main benefit of using a collapsed core architecture?
Simplifies network design by combining core and distribution layers
B. Increases broadcast domains
C. Requires more hardware devices
D. Limits scalability
Correct Answer: A. Simplifies network design by combining core and distribution layers
Explanation: Collapsed core reduces complexity and cost for smaller networks.
What Cisco protocol helps mitigate routing loops in EIGRP?
Feasibility Condition
B. Spanning Tree Protocol
C. VTP
D. HSRP
Correct Answer: A. Feasibility Condition
Explanation: Feasibility Condition in EIGRP ensures loop-free paths by validating route feasibility.
Which Cisco feature provides network access control by assessing endpoint posture before granting access?
Cisco ISE Posture
B. VTP
C. EtherChannel
D. CDP
Correct Answer: A. Cisco ISE Posture
Explanation: ISE Posture verifies device health and compliance before network access.
What is the function of Cisco FabricPath in data center design?
Provides Layer 2 multipath forwarding to improve scalability and redundancy
B. Routes WAN traffic
C. Enables wireless client roaming
D. Provides VPN services
Correct Answer: A. Provides Layer 2 multipath forwarding to improve scalability and redundancy
Explanation: FabricPath eliminates Spanning Tree bottlenecks by enabling multipath Layer 2 forwarding.
Which Cisco protocol is used to prevent unauthorized DHCP servers on a network?
DHCP Snooping
B. VTP
C. HSRP
D. CDP
Correct Answer: A. DHCP Snooping
Explanation: DHCP Snooping filters DHCP messages to block unauthorized servers.
What is the primary role of the Cisco Distribution Layer in the three-tier design?
Aggregates access layer switches and enforces policies
B. Connects directly to end devices
C. Acts as a backbone for the core layer
D. Manages IP addressing
Correct Answer: A. Aggregates access layer switches and enforces policies
Explanation: The distribution layer aggregates and applies policies like filtering and QoS.
Which Cisco protocol is best suited for dynamic VLAN assignment?
802.1X with VLAN assignment
B. VTP
C. CDP
D. STP
Correct Answer: A. 802.1X with VLAN assignment
Explanation: 802.1X can dynamically assign VLANs based on authentication.
What does Cisco SD-WAN use to encrypt data between sites?
IPsec tunnels
B. MPLS
C. OSPF
D. VTP
Correct Answer: A. IPsec tunnels
Explanation: SD-WAN uses IPsec to secure data traffic across WAN links.
In Cisco switch design, what is the purpose of a management VLAN?
Isolate network management traffic from user data
B. Carry user traffic
C. Provide multicast routing
D. Aggregate links
Correct Answer: A. Isolate network management traffic from user data
Explanation: Management VLAN isolates and protects administrative traffic.
What is Cisco’s recommended protocol for dynamic routing in large enterprise networks?
OSPF
B. RIP
C. Static Routing
D. HSRP
Correct Answer: A. OSPF
Explanation: OSPF scales well for large networks and supports fast convergence.
Which Cisco feature allows switch ports to share the same MAC address and act as a single interface?
EtherChannel
B. VTP
C. Port Security
D. CDP
Correct Answer: A. EtherChannel
Explanation: EtherChannel bundles multiple physical links into one logical link.
What Cisco solution provides centralized network security policy management?
Cisco ISE (Identity Services Engine)
B. Cisco DNA Center
C. Cisco Prime
D. Cisco Umbrella
Correct Answer: A. Cisco ISE (Identity Services Engine)
Explanation: ISE manages authentication, authorization, and policy enforcement.
Which Cisco protocol provides fast failover for routed links?
Bidirectional Forwarding Detection (BFD)
B. STP
C. VTP
D. HSRP
Correct Answer: A. Bidirectional Forwarding Detection (BFD)
Explanation: BFD provides rapid detection of link failures to improve routing convergence.
In Cisco designs, which technology is used to extend Layer 2 connectivity across geographically dispersed sites?
VXLAN
B. MPLS
C. NAT
D. DHCP Snooping
Correct Answer: A. VXLAN
Explanation: VXLAN tunnels Layer 2 frames over Layer 3 networks to extend VLANs.
Which Cisco security feature allows segmentation of traffic based on user identity rather than IP?
Cisco TrustSec
B. VTP
C. HSRP
D. EtherChannel
Correct Answer: A. Cisco TrustSec
Explanation: TrustSec uses Security Group Tags to enforce identity-based policies.
What is the benefit of Cisco StackWise technology?
Multiple switches operate as a single logical switch
B. Provides Layer 3 routing
C. Secures wireless networks
D. Implements dynamic VLANs
Correct Answer: A. Multiple switches operate as a single logical switch
Explanation: StackWise simplifies management and increases redundancy.
What is the function of Cisco Prime Infrastructure?
Centralized management and monitoring of network devices
B. Wireless client authentication
C. Routing protocol configuration
D. IP address management
Correct Answer: A. Centralized management and monitoring of network devices
Explanation: Prime Infrastructure offers centralized network visibility and control.
Which Cisco protocol can be used to discover non-Cisco network devices?
LLDP
B. CDP
C. VTP
D. STP
Correct Answer: A. LLDP
Explanation: LLDP is an open standard used for device discovery across vendors.
What Cisco feature helps protect against VLAN hopping attacks?
Proper native VLAN configuration and disabling unused ports
B. Enabling VTP
C. Using HSRP
D. Configuring EtherChannel
Correct Answer: A. Proper native VLAN configuration and disabling unused ports
Explanation: Securing native VLAN and unused ports reduces VLAN hopping risks.
In Cisco designs, what is the main advantage of using MPLS?
Enables scalable, traffic-engineered VPNs with QoS
B. Replaces Ethernet switching
C. Manages wireless clients
D. Secures DNS requests
Correct Answer: A. Enables scalable, traffic-engineered VPNs with QoS
Explanation: MPLS supports efficient routing and VPN services with QoS.
Which Cisco technology can be used for endpoint compliance checking?
Cisco ISE Posture
B. VTP
C. EtherChannel
D. CDP
Correct Answer: A. Cisco ISE Posture
Explanation: It assesses device compliance before network access.
What is the primary purpose of a Cisco route reflector?
Reduce the IBGP full mesh requirement
B. Provide Layer 2 switching
C. Encrypt routing updates
D. Load balance traffic
Correct Answer: A. Reduce the IBGP full mesh requirement
Explanation: Route reflectors simplify IBGP topology by reflecting routes.
What is the benefit of Cisco’s TrustSec Security Group Tags?
Simplifies access control by assigning policy to groups instead of IPs
B. Increases routing convergence speed
C. Enables multicast routing
D. Aggregates multiple links
Correct Answer: A. Simplifies access control by assigning policy to groups instead of IPs
Explanation: SGTags enforce policies based on identity.
Which Cisco protocol is designed for scalable multicast routing?
PIM (Protocol Independent Multicast)
B. OSPF
C. RIP
D. EIGRP
Correct Answer: A. PIM (Protocol Independent Multicast)
Explanation: PIM efficiently manages multicast traffic in large networks.
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