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