1. Networking Protocols and Services

• IP – Internet Protocol

• TCP – Transmission Control Protocol

• UDP – User Datagram Protocol

• HTTP – HyperText Transfer Protocol

• HTTPS – HyperText Transfer Protocol Secure

• FTP – File Transfer Protocol

• DNS – Domain Name System

• DHCP – Dynamic Host Configuration Protocol

• ARP – Address Resolution Protocol

• ICMP – Internet Control Message Protocol

• SMTP – Simple Mail Transfer Protocol

• POP3 – Post Office Protocol 3

• IMAP – Internet Message Access Protocol

• SNMP – Simple Network Management Protocol

• NAT – Network Address Translation

• RIP – Routing Information Protocol

• OSPF – Open Shortest Path First

• BGP – Border Gateway Protocol

• QoS – Quality of Service

• MPLS – Multi-Protocol Label Switching

• IPsec – Internet Protocol Security

• TFTP – Trivial File Transfer Protocol

• DDoS – Distributed Denial of Service

• MITM – Man In The Middle

2. Network Architecture and Types

• LAN – Local Area Network

• WAN – Wide Area Network

• MAN – Metropolitan Area Network

• VPN – Virtual Private Network

• VLAN – Virtual Local Area Network

• WLAN – Wireless Local Area Network

• P2P – Peer-to-Peer

• NAS – Network-Attached Storage

• SAN – Storage Area Network

• WPA – Wi-Fi Protected Access

• WPA2 – Wi-Fi Protected Access 2

• WEP – Wired Equivalent Privacy

3. Network Devices and Hardware

• NIC – Network Interface Card

• CSU/DSU – Channel Service Unit/Data Service Unit

• WAP – Wireless Access Point

• SFP – Small Form-factor Pluggable

• ONU – Optical Network Unit

• LAN Card – Local Area Network Card

4. Network Security

• IDS – Intrusion Detection System

• IPS – Intrusion Prevention System

• PKI – Public Key Infrastructure

• TLS – Transport Layer Security

• AES – Advanced Encryption Standard

• RSA – Rivest-Shamir-Adleman (public-key cryptosystem)

5. Data Transmission and Layers

• MAC – Media Access Control

• PHY – Physical Layer

• PDU – Protocol Data Unit

• MTU – Maximum Transmission Unit

• FCS – Frame Check Sequence

6. Routing and Addressing

• CIDR – Classless Inter-Domain Routing

• BGP – Border Gateway Protocol

• RIP – Routing Information Protocol

• OSPF – Open Shortest Path First

• NAT – Network Address Translation

• ARP – Address Resolution Protocol

7. Miscellaneous

• OSI – Open Systems Interconnection

• TCP/IP – Transmission Control Protocol/Internet Protocol

• IEEE – Institute of Electrical and Electronics Engineers

• NIC – Network Interface Card

• PDU – Protocol Data Unit

• SSL – Secure Sockets Layer

• VPN – Virtual Private Network

• RTT – Round Trip Time