Untitled Flashcards Set

Here’s the revised flashcard set where only the abbreviations are on the front side, and the full definitions are on the back:

Flashcards: Networking Terms

1. SLAAC
   → Stateless Address Autoconfiguration: An IPv6 method for automatic address assignment without a DHCP server.

2. GUA
   → Global Unicast Address: A unique IPv6 address assigned for internet communication, similar to a public IPv4 address.

3. Trunk Port
   → A switch port that carries multiple VLANs using tagging (802.1Q).

4. DTP
   → Dynamic Trunking Protocol: A Cisco protocol that automatically negotiates trunking between switches.

5. VTP
   → VLAN Trunking Protocol: A Cisco protocol that distributes VLAN information across switches.

6. Native VLAN
   → The VLAN that carries untagged traffic on a trunk link (default: VLAN 1 on Cisco devices).

7. STP
   → Spanning Tree Protocol: A protocol that prevents loops in a Layer 2 switched network.

8. PVST+
   → Per VLAN Spanning Tree Plus: A Cisco proprietary version of STP that runs a separate instance per VLAN.

9. RPVST+
   → Rapid Per VLAN Spanning Tree Plus: A Cisco enhancement of PVST+ with faster convergence using RSTP.

10. PortFast
    → An STP feature that allows ports to skip learning/listening and transition directly to forwarding.

11. BPDU Guard
    → A security feature that disables a port if it receives a BPDU, preventing STP attacks.

12. CDP
    → Cisco Discovery Protocol: A Cisco protocol used to discover and share information with directly connected Cisco devices.

13. LLDP
    → Link Layer Discovery Protocol: A vendor-neutral protocol for device discovery on a local network.

14. PAgP
    → Port Aggregation Protocol: A Cisco protocol for automatic EtherChannel formation between switches.

15. LACP
    → Link Aggregation Control Protocol: A standardized protocol (IEEE 802.3ad) for dynamically creating EtherChannel links.

16. Switch Stacking
    → Combining multiple physical switches into a single logical unit.

17. Chassis Aggregation
    → A Cisco technology similar to switch stacking but used in modular switches.

18. Routing Table Components
    → Includes destination networks, subnet masks, next-hop addresses, administrative distance, and metrics.

19. AD
    → Administrative Distance: A value that ranks the trustworthiness of routing sources (lower is more preferred).

20. Router on a Stick
    → A router with a single physical interface handling multiple VLANs using subinterfaces.

21. SVI
    → Switched Virtual Interface: A Layer 3 switch interface for VLAN routing.

22. OSPF
    → Open Shortest Path First: A link-state routing protocol that uses the shortest path first algorithm.

23. EIGRP
    → Enhanced Interior Gateway Routing Protocol: A Cisco proprietary routing protocol that uses the DUAL algorithm for quick convergence.

24. RIP
    → Routing Information Protocol: A distance-vector routing protocol that uses hop count as its metric (max 15 hops).

25. Default Route
    → A route used when no specific match is found (e.g., 0.0.0.0/0).

26. Floating Static Route
    → A backup static route with a higher administrative distance than the primary route.

27. OSPFv2
    → The IPv4-specific version of OSPF.

28. OSPFv3
    → The IPv6-compatible version of OSPF.

29. PPP
    → Point-to-Point Protocol: A Layer 2 protocol for direct communication, supporting authentication and compression.

30. MLPPP
    → Multilink PPP: A variation of PPP that combines multiple links for higher bandwidth.

31. GRE
    → Generic Routing Encapsulation: A tunneling protocol that encapsulates packets for transport across IP networks.

32. MPLS
    → Multiprotocol Label Switching: A routing technique that forwards packets based on labels instead of IP addresses.

33. Metro Ethernet
    → A high-speed Ethernet-based WAN solution for urban networks.

34. PPPoE
    → Point-to-Point Protocol over Ethernet: A protocol that enables PPP sessions over Ethernet networks (e.g., DSL).

35. eBGP
    → External Border Gateway Protocol: The BGP version used to exchange routes between different autonomous systems (AS).

36. DNS Query
    → A request sent by a client to a DNS server to resolve a domain name to an IP address.

37. DNS Recursive vs. Iterative Resolution
    → Recursive: The DNS server queries others on behalf of the client.
    → Iterative: The DNS server provides the best answer or a referral.

38. DNS Response
    → A reply from a DNS server containing the requested IP address or an error message.

39. DNS Caching
    → Storing DNS responses to speed up future queries.

40. TFTP
    → Trivial File Transfer Protocol: A simple, connectionless file transfer protocol used for configuration files or firmware updates.

41. HSRP
    → Hot Standby Router Protocol: A Cisco redundancy protocol that allows routers to share a virtual IP address.

42. Pool NAT
    → Network Address Translation: A method where private IPs are mapped to a pool of public IPs for internet access.

43. PAT
    → Port Address Translation: A variation of NAT that maps multiple private IPs to a single public IP using different ports.

44. NTP
    → Network Time Protocol: A protocol for synchronizing time across network devices.

45. AAA
    → Authentication, Authorization, and Accounting: A security framework that controls access and tracks user activity.

46. TACACS
    → Terminal Access Controller Access-Control System: A Cisco authentication protocol that separates authentication, authorization, and accounting.

47. Northbound APIs
    → Interfaces that allow SDN controllers to communicate with applications for automation.

48. Southbound APIs
    → Interfaces that allow SDN controllers to manage network devices like routers and switches.

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