Free JNCIA Networking Fundamentals Questions and Answers — Questions and Answers
Question 1: What is the primary purpose of the OSI model?
- Define the structure of computer hardware
- Standardize networking protocols and communication (Correct answer)
- Identify hardware failures in a network
- Create a physical network topology
Correct answer: Standardize networking protocols and communication
The OSI model provides a framework to standardize how different networking protocols and systems communicate.
Question 2: What does the term "default gateway" refer to?
- The main DNS server
- The network firewall
- The router that connects a local network to external networks (Correct answer)
- A secondary IP address
Correct answer: The router that connects a local network to external networks
The default gateway is used to send traffic from a local network to destinations outside the local subnet.
Question 3: What is the purpose of subnetting?
- To increase network speed
- To segment a network into smaller, manageable parts (Correct answer)
- To reduce the number of IP addresses needed
- To combine multiple networks into one
Correct answer: To segment a network into smaller, manageable parts
Subnetting improves network efficiency and security by dividing a larger network into smaller subnets.
Question 4: Which Juniper device family primarily handles packet forwarding in a network?
- EX Series
- MX Series (Correct answer)
- SRX Series
- PTX Series
Correct answer: MX Series
The MX Series devices are service routers optimized for packet forwarding and routing.
Question 5: What is the function of ARP in networking?
- Resolve IP addresses to MAC addresses (Correct answer)
- Assign IP addresses to devices
- Establish a VPN connection
- Encrypt data packets
Correct answer: Resolve IP addresses to MAC addresses
ARP (Address Resolution Protocol) maps an IP address to its corresponding MAC address for communication within a network.
Free JNCIA Networking Fundamentals Questions and Answers
What is the primary purpose of the OSI model?