OSI LAYERS

NNTP  · SIP  · SSI  · DNS  · FTP  · Gopher · HTTP  · NFS  
· NTP  · SMPP  · SMTP  ·SNMP  · Telnet  · DHCP  · Netconf  · RTP · SPDY.SNMP
Domain Name System (DNS):
The Domain Name System (DNS) is a hierarchical distributed naming system for computers, services, or any resource connected to the Internet or a private network. It associates various information with domain names assigned to each of the participating entities.
A Domain Name Service translates queries for domain names (which are meaningful to humans) into IP addresses for the purpose of locating computer services and devices worldwide.
File Transfer Protocol (FTP):
File Transfer Protocol (FTP) is a standard network protocol used to transfer files from one host to another host over a TCP-based network, such as the Internet.
Hypertext Transfer Protocol (HTTP):
The Hypertext Transfer Protocol (HTTP) is an application protocol for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide Web.
Lightweight Directory Access Protocol (LDAP):
The Lightweight Directory Access Protocol (LDAP) is an application protocol for accessing and maintaining distributed directory information services over an Internet Protocol (IP) network.
Post Office Protocol (POP):
 Post Office Protocol (POP) is an application-layer Internet standard protocol used by local e-mail clients to retrieve e-mail from a remote server over a TCP/IP connection.
Real-time Transport Protocol (RTP):
 Real-time Transport Protocol (RTP) defines a standardized packet format for delivering audio and video over IP networks. such as telephony, video teleconference applications, television services and web-based push-to-talk features.
SNMP:
SNMP works at the Application Layer of the Internet Protocol Suite .
Telnet:
Telnet is a network protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communications facility using a virtual terminal connection.
MIME  · XDR  · TLS  · SSL
Transport Layer Security (TLS) & Secure Sockets Layer (SSL):
Transport Layer Security (TLS) and its predecessor, Secure Sockets Layer (SSL), are cryptographic protocols that provide communication security over the Internet.[1] TLS and SSLencrypt the segments of network connections above the Transport Layer, using asymmetric cryptography for key exchange, symmetric encryption for privacy, and message authentication codes for message integrity.
         
Named pipe  · NetBIOS  · SAP  · PPTP ·SOCKS

NetBIOS:
Network Basic Input/output System. It provides services related to the session layer of the OSI model allowing applications on separate computers to communicate over a local area network.
PPTP:
The Point-to-Point Tunneling Protocol (PPTP) is a method for implementing virtual private networks. PPTP uses a control channel over TCP and a GRE tunnel operating to encapsulate PPP packets.
SOCKS:
SOCKS is an Internet protocol that routes network packets between a client and server through a proxy server.

TCP  · UDP  · SCTP  · DCCP  · SPX

TCP & UDP:
Refer to the CCNA notes.

IP (IPv4IPv6)  · ICMP  · IPsec  · IGMP  ·IPX  · AppleTalk  · X.25
IP:
The Internet Protocol is responsible for addressing hosts and routing datagrams (packets) from a source host to the destination host across one or more IP networks. For this purpose the Internet Protocol defines an addressing system that has two functions: identifying hosts and providing a logical location service. This is accomplished by defining standard datagrams and a standard addressing system.
Internet Control Message Protocol (ICMP):
The Internet Control Message Protocol (ICMP) is one of the core protocols of the Internet Protocol Suite. It is chiefly used by the operating systems of networked computers to send error messages indicating, for example, that a requested service is not available or that a host or router could not be reached. ICMP can also be used to relay query messages. It is assigned protocol number.
Internet Group Management Protocol (IGMP):The Internet Group Management Protocol (IGMP) is a communications protocol used by hosts and adjacent routers on IP networks to establish multicast group memberships.
ATM  · SDLC  · HDLC  · ARP  · CSLIP  ·SLIP  · GFP  · PLIP  · IEEE 802.2  · LLC  ·L2TP  · IEEE 802.3  · Frame Relay  · ITU-T G.hn DLL  · PPP  · Network switch
Point-to-Point Protocol (PPP):
Point-to-Point Protocol (PPP) is a data link protocol commonly used in establishing a direct connection between twonetworking nodes. It can provide connection authentication, transmission encryption and compression.
EIA/TIA-232  · EIA/TIA-449  · ITU-T V-Series  · I.430  · I.431  · POTS  · PDH  ·SONET/SDH  · PON  · OTN  · DSL  ·IEEE 802.3  · IEEE 802.11  · IEEE 802.15 · IEEE 802.16  · IEEE 1394  · ITU-T G.hn PHY  · USB  · Bluetooth  · Hubs
Bluetooth:
Bluetooth is a proprietary open wireless technology standard for exchanging data over short distances  from fixed and mobile devices, creating personal area networks  with high levels of security.
IEEE 802.11 :

IEEE 802.11 is a set of standards for implementing wireless local area network (WLAN) computer communication.

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