CCNA Networking Fundamentals Flashcards

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IP address for local loopback testing?127.0.0.1
Max host addresses in a /24 subnet?254
OSI model layer for data encryption?Presentation layer
Protocol for secure remote access?SSH (Secure Shell)
Purpose of a VLAN?To segment a network logically without physical separation
Function of a subnet mask?Defines network and host portions of an IP
Protocol to assign IP addresses dynamically?DHCP (Dynamic Host Configuration Protocol)
Protocol for email retrieval?IMAP or POP3
Purpose of DHCP?To automatically assign IP addresses
Address type unique to each network device?MAC address
Protocol used to map IP to MAC?ARP (Address Resolution Protocol)
Port number for FTP data transfer?Port 20
Range of Class A IP addresses?1.0.0.0 to 126.255.255.255
Default gateway?IP address of router for external traffic
Default subnet mask for Class C?255.255.255.0
Bits in an IPv4 address?32 bits
Broadcast domain?Logical area where broadcasts are received
Purpose of NAT?To translate private IPs to public IPs
Difference between TCP and UDP?TCP is connection-oriented; UDP is connectionless
Role of a default gateway?Routes traffic from local network to other networks
Protocol to find a device's MAC address?ARP (Address Resolution Protocol)
Subnet mask for a /16 network?255.255.0.0
OSI layer for switch operation?Data Link layer (Layer 2)
DNS stands for?Domain Name System
Purpose of ICMP?To send error and diagnostic messages
Well-known port number for HTTPS?Port 443
Layer of the OSI model responsible for routing?Network layer
Device used to connect different networks?Router
Well-known port number for HTTP?Port 80
CIDR stands for?Classless Inter-Domain Routing

Study key CCNA networking concepts with this flashcard deck. Covers OSI model layers, IP addressing, subnetting, VLANs, protocols like DHCP, ARP, and NAT, port numbers, and device functions. Great for learning routing, switching, security, and foundational network operations. A helpful tool for passing the CCNA exam or sharpening basic networking skills.
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