Cisco Networking Fundamentals- Unlocking Success in the Introduction Exam 1 Question and Answers [100% Correct] 2025/2026 Latest Release!!
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Course
CCNA - Cisco Certified Network Associate
Institution
CCNA - Cisco Certified Network Associate
Cisco Networking Fundamentals- Unlocking
Success in the Introduction Exam 1 Question
and Answers [100% Correct] 2025/2026
Latest Release!!
What is the primary function of a router in a network?
To forward data packets between different networks
Which OSI layer is responsible for end...
Cisco Networking Fundamentals- Unlocking
Success in the Introduction Exam 1 Question
and Answers [100% Correct] 2025/2026
Latest Release!!
What is the primary function of a router in a network?
To forward data packets between different networks
Which OSI layer is responsible for end-to-end communication and error handling?
Transport layer
What is the main purpose of a subnet mask in IP addressing?
To define the network and host portions of an IP address
Which of the following is an example of a Class A IP address?
10.0.0.1
What protocol is used to dynamically assign IP addresses to devices on a network?
DHCP (Dynamic Host Configuration Protocol)
What is the default subnet mask for a Class C IP address?
255.255.255.0
Which cable type is most commonly used to connect a computer to a switch?
Ethernet cable (Cat5e, Cat6)
What does the acronym DNS stand for in networking?
1
, Domain Name System
Which device operates at the Data Link layer (Layer 2) of the OSI model?
Switch
What type of IP address is used to identify a device on a local network?
Private IP address
What is the purpose of NAT (Network Address Translation) in a router?
To translate private IP addresses to a public IP address for internet access
What does the acronym VLAN stand for in networking?
Virtual Local Area Network
Which of the following protocols is used for secure communication over a network?
SSL/TLS (Secure Sockets Layer / Transport Layer Security)
What is the difference between a hub and a switch?
A hub broadcasts data to all devices, while a switch sends data only to the device it is intended
for
Which of the following is a common use of an IP address?
Identifying a device on a network
What is the function of the ARP (Address Resolution Protocol) in networking?
To map an IP address to a MAC address
Which of the following is a common application of IPv6?
2
, To provide a larger address space than IPv4
What is the purpose of a firewall in a network?
To monitor and control incoming and outgoing network traffic
What is a key advantage of using fiber optic cables in networking?
High data transmission speeds and long-distance capabilities
Which layer of the OSI model is responsible for routing data across different networks?
Network layer
What is the purpose of the TCP/IP model in networking?
To provide a standardized set of protocols for network communication
What is the function of a DNS server in a network?
To resolve domain names to IP addresses
What is the purpose of a DMZ (Demilitarized Zone) in network security?
To create a buffer zone between the internal network and external network
What does the acronym MAC stand for in networking?
Media Access Control
What is the primary role of the application layer in the OSI model?
To provide services for applications to communicate over the network
What is the function of the transport layer in the OSI model?
To provide end-to-end communication and error recovery
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