Mastering CCNA: Test Your Knowledge with These MCQs and Answers
Are you on a quest to earn your Cisco Certified Network Associate (CCNA) certification? If so, you're in for a rewarding journey that can open doors to exciting career opportunities in the world of networking. To help you prepare effectively for the CCNA exam, we've put together a collection of Multiple Choice Questions (MCQs) along with detailed answers. These questions cover various CCNA topics, ensuring you have a comprehensive understanding of the material.
- Which layer of the OSI model is responsible for data encryption and decryption?
a) Physical Layer
b) Data Link Layer
c) Network Layer
d) Presentation Layer
Answer: d) Presentation Layer
Explanation: The Presentation Layer is responsible for data encryption and decryption, ensuring that data is presented in a readable format.
- What is the purpose of the ARP (Address Resolution Protocol)?
a) To map IP addresses to MAC addresses
b) To route data packets across the network
c) To encrypt data transmissions
d) To establish VPN connections
Answer: a) To map IP addresses to MAC addresses
Explanation: ARP is used to map an IP address to its corresponding MAC address in a local network.
- Which routing protocol uses the DUAL algorithm?
Answer: c) EIGRP
Explanation: Enhanced Interior Gateway Routing Protocol (EIGRP) uses the DUAL (Diffusing Update Algorithm) to calculate routing tables.
- What is the default administrative distance for OSPF (Open Shortest Path First)?
Answer: b) 110
Explanation: OSPF has a default administrative distance of 110.
- Which subnet mask is used for a Class B IP address with subnetting?
Answer: a) 255.255.0.0
Explanation: A Class B IP address with subnetting typically uses a subnet mask of 255.255.0.0.
- What is the purpose of the VLAN (Virtual Local Area Network)?
a) To segment a physical network into multiple logical networks
b) To connect multiple geographically distant networks
c) To provide wireless connectivity
d) To filter incoming traffic
Answer: a) To segment a physical network into multiple logical networks
Explanation: VLANs are used to create logical network segments within a physical network.
- Which protocol operates at the Transport Layer of the OSI model?
Answer: d) TCP
Explanation: Transmission Control Protocol (TCP) operates at the Transport Layer of the OSI model.
- What is the maximum number of hosts in a /27 subnet?
Answer: b) 32
Explanation: A /27 subnet has 32 available host addresses.
- Which type of firewall operates at the Application Layer of the OSI model?
a) Stateful firewall
b) Packet-filtering firewall
c) Proxy firewall
d) NAT firewall
Answer: c) Proxy firewall
Explanation: Proxy firewalls operate at the Application Layer and provide a high level of security by inspecting and filtering application-layer traffic.
- What is the primary function of a router in a network?
a) To connect devices within the same network segment
b) To filter incoming traffic
c) To forward data between different network segments
d) To provide wireless access
Answer: c) To forward data between different network segments
Explanation: Routers are responsible for forwarding data between different network segments, making routing decisions based on destination IP addresses.
These CCNA MCQs and answers cover a range of topics, helping you test your knowledge and prepare for the CCNA certification exam. Remember that continuous practice and hands-on experience are key to mastering networking concepts.
Good luck with your CCNA journey, and don't forget to explore further resources and study materials to enhance your understanding. You can also check out the JobsJaano website for more CCNA-related resources to boost your preparation. Happy studying!