Networking Fundamentals Flashcards
5 cards from real JNCIA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 5 Networking Fundamentals flashcards as text
What is the primary purpose of the OSI model?
Answer: Standardize networking protocols and communication
The OSI model provides a framework to standardize how different networking protocols and systems communicate.
What does the term "default gateway" refer to?
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.
What is the purpose of subnetting?
Answer: To segment a network into smaller, manageable parts
Subnetting improves network efficiency and security by dividing a larger network into smaller subnets.
Which Juniper device family primarily handles packet forwarding in a network?
Answer: MX Series
The MX Series devices are service routers optimized for packet forwarding and routing.
What is the function of ARP in networking?
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.
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Sources & references
Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy
- learningportal.juniper.net — Test delivery, eligibility, exam format, score release, time limit, exam information · verified Nov 2026
- juniper.net — Passing score, score validity, renewal · verified Oct 2026