Week 07 Flashcards
SDN vs SD-WAN
SDN vs SD-WAN
SDN (Software-Defined Networking) centralizes control of network traffic for data centers, enabling dynamic configuration, while SD-WAN (Software-Defined Wide Area Networking) optimizes and manages connectivity across distributed networks for branch offices.
OSPF
OSPF (Open Shortest Path First) is a link-state routing protocol used in IP networks to determine the best path for data by dynamically calculating routes based on the shortest path, utilizing Dijkstra’s algorithm.
Token Ring
Token Ring is a networking protocol where devices in a ring topology pass a token sequentially to control access, allowing only the device holding the token to transmit data, which helps avoid data collisions.
FDDI
FDDI (Fiber Distributed Data Interface) is a high-speed networking standard using fiber-optic cables in a dual-ring topology, primarily for long-distance, high-capacity data transmission in LANs and MANs, offering fault tolerance and speeds up to 100 Mbps.
ICMP
ICMP (Internet Control Message Protocol) is a network protocol used for error handling, diagnostics, and operational information in IP networks, often utilized by tools like ping and traceroute to check connectivity and troubleshoot issues.
POP3 and IMAP
POP3 (Post Office Protocol 3) downloads emails from the server to a local device and typically deletes them from the server afterward, while IMAP (Internet Message Access Protocol) allows emails to be stored on the server and accessed from multiple devices, syncing changes across all devices.
ARP
ARP (Address Resolution Protocol) is a network protocol used to map an IP address to a device’s physical MAC address within a local network, enabling communication between devices on the same LAN.
baseband vs broadband
Baseband transmission uses a single channel on a communication medium to send one signal at a time, typically for short distances (e.g., Ethernet), while Broadband transmission divides the medium into multiple channels, allowing multiple signals to be sent simultaneously over longer distances (e.g., cable internet).
CSMA/CA and /CD
CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) is used in wireless networks to prevent collisions by listening for signals before transmitting and using a backoff algorithm, while CSMA/CD (Carrier Sense Multiple Access with Collision Detection) is used in wired networks to detect and resolve collisions by halting and retransmitting the signal.
What does OSI model do?
segments the networking tasks, protocols,
and services into different layers
Encapsulation
Encapsulation is the process of wrapping data with protocol information at each layer of the OSI or TCP/IP model, allowing for structured communication between network devices by adding headers (and sometimes trailers) to the data as it moves through the network stack.
FTP vs TFTP
FTP (File Transfer Protocol) is a standard network protocol for transferring files with authentication, supporting both upload and download, while TFTP (Trivial File Transfer Protocol) is a simpler, connectionless protocol with no authentication, typically used for smaller file transfers like configuration files or boot files.
