Question 1
Which of the following is the primary purpose of Cisco SD-Access?
A. To provide high-availability routing within the data center
B. To automate the configuration of network devices using templates
C. To enable the segmentation of network traffic without using VLANs
D. To manage the lifecycle of network devices within an enterprise

Correct Answer: C
Explanation: Cisco SD-Access provides network segmentation without using VLANs by using virtual networks (VN) and VXLAN technologies. It simplifies network design and management.

Question 2
Which protocol is used by EIGRP to calculate the best path for routing?
A. DUAL
B. SPF
C. Bellman-Ford
D. OSPF

Correct Answer: A
Explanation: DUAL (Diffusing Update Algorithm) is the protocol used by EIGRP to calculate the best path and determine the successor and feasible successor for route selection.

Question 3
What is the default behavior of a router when an IP ACL (Access Control List) is applied to an interface in inbound direction?
A. The router allows all traffic by default
B. The router blocks all traffic by default
C. The router applies the ACL to all incoming traffic
D. The router applies the ACL to outgoing traffic only

Correct Answer: C
Explanation: When an IP ACL is applied in the inbound direction, it is evaluated for all incoming traffic on the interface.

Question 4
Which layer of the OSI model is responsible for reliable communication and flow control in the TCP/IP stack?
A. Application Layer
B. Transport Layer
C. Network Layer
D. Data Link Layer

Correct Answer: B
Explanation: The Transport Layer (Layer 4) is responsible for reliable communication, ensuring error recovery and flow control (e.g., using TCP and UDP).

Question 5
Which Cisco feature can be used to automate and simplify network device configuration and management across a large enterprise?
A. Cisco DNA Center
B. Cisco IOS
C. Cisco UCS Manager
D. Cisco SD-WAN

Correct Answer: A
Explanation: Cisco DNA Center is a centralized network management and automation platform designed to simplify network configuration and management in enterprise environments.

Question 6
What does the show ip route command display on a router?
A. A list of all active IP interfaces
B. The status of routing protocols
C. The current routing table
D. All active routes in the local network

Correct Answer: C
Explanation: The show ip route command displays the routing table on a router, showing the active routes and how packets will be forwarded based on those routes.

Question 7
Which of the following is an example of a Layer 2 (Data Link Layer) protocol?
A. IP
B. TCP
C. Ethernet
D. HTTP

Correct Answer: C
Explanation: Ethernet is a Layer 2 protocol, responsible for framing data and facilitating communication between devices on a local area network (LAN).

Question 8
What is the purpose of the Spanning Tree Protocol (STP)?
A. To route packets between VLANs
B. To provide fault tolerance and prevent loops in a network
C. To assign IP addresses to devices on a network
D. To enhance the performance of routing protocols

Correct Answer: B
Explanation: STP is used to prevent loops in a network by dynamically disabling links that would otherwise create a loop, ensuring a loop-free topology.

Question 9
Which type of IP address is used for communication between multiple devices within a local network or the Internet?
A. Unicast
B. Broadcast
C. Multicast
D. Anycast

Correct Answer: C
Explanation: Multicast addresses are used to send data to a group of devices rather than to a single device (unicast) or all devices (broadcast).

Question 10
What is the primary function of VRF (Virtual Routing and Forwarding) in an enterprise network?
A. To create multiple routing tables for traffic isolation
B. To segment a network into different broadcast domains
C. To aggregate traffic between different VLANs
D. To enhance routing protocol performance

Correct Answer: A
Explanation: VRF enables the creation of multiple virtual routing tables on a single physical router, providing traffic isolation between different departments or customers.

Question 11
Which of the following is a key feature of Cisco SD-WAN?
A. Centralized management of WAN traffic
B. Use of MPLS for secure communication
C. Support for BGP routing between remote sites
D. Automatic assignment of IP addresses to remote sites

Correct Answer: A
Explanation: Cisco SD-WAN provides centralized management for controlling WAN traffic, improving efficiency and simplifying network administration across distributed locations.

Question 12
Which layer of the OSI model provides end-to-end communication services between devices?
A. Application Layer
B. Transport Layer
C. Network Layer
D. Session Layer

Correct Answer: B
Explanation: The Transport Layer (Layer 4) is responsible for end-to-end communication, ensuring data reliability and flow control between devices.

Question 13
What is the default administrative distance of the OSPF routing protocol?
A. 90
B. 110
C. 120
D. 1

Correct Answer: B
Explanation: The default administrative distance for OSPF is 110. Administrative distance helps determine which routing protocol’s routes are preferred when there are multiple options for reaching the same destination.

Question 14
What does BGP (Border Gateway Protocol) use as its path selection metric?
A. Bandwidth
B. Hop count
C. AS path
D. Delay

Correct Answer: C
Explanation: BGP uses the AS path (Autonomous System path) to determine the best route. It also considers other metrics such as local preference, MED, and next-hop for path selection.

Question 15
Which of the following is an example of a Layer 3 device?
A. Switch
B. Hub
C. Router
D. Bridge

Correct Answer: C
Explanation: A router is a Layer 3 (Network Layer) device, responsible for routing traffic between different networks or subnets.

Question 16
Which of the following protocols is used to assign an IP address to a host on an Ethernet network?
A. ARP
B. DHCP
C. DNS
D. RARP

Correct Answer: B
Explanation: DHCP (Dynamic Host Configuration Protocol) is used to dynamically assign IP addresses to hosts on a network.

Question 17
Which of the following VLAN types is used to carry untagged traffic across trunks?
A. Native VLAN
B. Default VLAN
C. Management VLAN
D. Voice VLAN

Correct Answer: A
Explanation: The native VLAN is the VLAN used to carry untagged traffic across trunks in Cisco networks.

Question 18
What is the purpose of HSRP (Hot Standby Router Protocol) in an enterprise network?
A. To load balance traffic between multiple routers
B. To provide redundant gateway routers for hosts
C. To enable VLAN configuration across routers
D. To automate the assignment of IP addresses

Correct Answer: B
Explanation: HSRP provides gateway redundancy by allowing multiple routers to work together, ensuring that if one router fails, another can take over without disrupting traffic.

Question 19
Which OSPF router type is responsible for originating LSAs (Link-State Advertisements) to other routers in the network?
A. DR (Designated Router)
B. BDR (Backup Designated Router)
C. ABR (Area Border Router)
D. DCE (Data Communications Equipment)

Correct Answer: A
Explanation: The Designated Router (DR) is responsible for originating and distributing LSAs in an OSPF network, especially in broadcast and non-broadcast networks.

Question 20
Which of the following is the correct IPv6 address format for a link-local address?
A. 192.168.1.1
B. fe80::/10
C. 2001:db8::/32
D. 10.0.0.1

Correct Answer: B
Explanation: IPv6 link-local addresses are in the range fe80::/10 and are used for communication within the local network segment.

Question 21
Which of the following is used by Cisco devices to encrypt user authentication credentials?
A. HTTPS
B. SSH
C. RADIUS
D. TACACS+

Correct Answer: D
Explanation: TACACS+ is used by Cisco devices to provide secure authentication, authorization, and accounting services, encrypting the entire user authentication process.

Question 22
Which command is used to configure a static route on a Cisco router?
A. ip route
B. route static
C. static route
D. ip static route

Correct Answer: A
Explanation: The ip route command is used to configure static routes on Cisco routers, specifying the destination network and the next-hop address.

Question 23
Which Layer 3 protocol is used to encapsulate multiple routing protocols, such as OSPF and EIGRP, for use within an enterprise?
A. MPLS
B. VPN
C. GRE
D. BGP

Correct Answer: C
Explanation: GRE (Generic Routing Encapsulation) is used to create a virtual tunnel between routers and can encapsulate various routing protocols such as OSPF and EIGRP.

Question 24
What does the DHCP Discover message do in the DHCP process?
A. It assigns an IP address to a host
B. It sends a request to the DHCP server to allocate an IP address
C. It notifies clients of IP address availability
D. It requests the DNS server to resolve a domain name

Correct Answer: B
Explanation: The DHCP Discover message is sent by a client to locate a DHCP server to request an IP address and other configuration parameters.

Question 25
Which of the following best describes VXLAN?
A. A Layer 2 technology for encapsulating multicast traffic
B. A Layer 3 technology for creating isolated virtual networks
C. A tunneling protocol used for extending Layer 2 networks over Layer 3 networks
D. A network protocol used for optimizing routing in large networks

Correct Answer: C
Explanation: VXLAN (Virtual Extensible LAN) is a tunneling protocol that allows Layer 2 networks to be extended across a Layer 3 network, providing virtual networks across large-scale environments.

Question 26
Which routing protocol uses link-state advertisements (LSAs) to exchange routing information?
A. EIGRP
B. OSPF
C. RIP
D. BGP

Correct Answer: B
Explanation: OSPF (Open Shortest Path First) uses LSAs to exchange routing information between routers, allowing them to dynamically learn about network topology changes.

Question 27
Which of the following can be used to configure and manage multiple devices across a network in a Cisco DNA environment?
A. Cisco Prime
B. Cisco DNA Center
C. Cisco Meraki
D. Cisco ISE

Correct Answer: B
Explanation: Cisco DNA Center is the central platform used for network automation, management, and analytics within Cisco’s Digital Network Architecture.

Question 28
Which of the following is the default VLAN on a Cisco switch?
A. VLAN 1
B. VLAN 10
C. VLAN 99
D. VLAN 100

Correct Answer: A
Explanation: VLAN 1 is the default VLAN on Cisco switches and is typically used for management purposes unless configured differently.

Question 29
Which router protocol is used to exchange routing information between routers in different Autonomous Systems?
A. EIGRP
B. OSPF
C. BGP
D. RIP

Correct Answer: C
Explanation: BGP (Border Gateway Protocol) is used to exchange routing information between routers in different Autonomous Systems (ASes).

Question 30
Which of the following Cisco technologies allows a single link between two switches to carry multiple VLANs?
A. Trunking
B. STP
C. EtherChannel
D. VTP

Correct Answer: A
Explanation: Trunking allows a single link between switches to carry multiple VLANs, using 802.1Q or ISL encapsulation.