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