Networking
...characters. The schema inclues formal definitions of the objexts, classes and attributes in the active directory structure BGP = Border Gateway Protocol, type of routing protocol In windows 2000/2003 server a forest is a logical domain structure that contains multiple domain trees. (BIND) Berkeley is used to administer Domain Name Systen (DNS) HTTPS uses SSL (secure Sockets Layer) to encrypt data) A distance-vector routing algorithm uses the hop count, or distance, and the direstion or vector to determine the best route for dad through an internetwork. UDP = User Datagram Protocol, does not check for connection. LDAP = Lightweight Directory Access Protocol. POP3 = Post Office Protocol 3 (port 110 is used for POP3). RIP = Routing Information Protocol. Internet Information Services (IIS) Basic Authentication transfers passwords in clear text dnscmd is used in windows 2000 to manage DNS TCP uses a three-way handshake to establish a connection group policy object (GPO) --------------------------------------------------------------------------------------------- Ip Addresses: Class A: The first bit of the 32-bit IP address set to 0 identifies a Class A network. The first 8 bits define the network address, and the remaining 24 bits identify the host. The 8-bit network address (with the first two bits set to 0) provides for up to 127 networks, and the 24-bit host address space identifies more then 16 million hosts per network. Class B: The first 2 bits of the IP address set to 10 identifies a Class B netowrk. The first 16-bits define the network address , and the remaining 16-bits identify the host. The 16-bit network address (with the first two bits set to 10) provides for more than 16,000 netowkrs, and the 16-bit host address space identifies 65,534 hosts per network. Class C: The girst 3 bits of the IP address set to 110 identifies a Class C network. The first 24 bits define the network address, and ther eamining 8 bits identify the host. The 24-bit network address (with the first three bits set to 110) provides for over 2 million netowrks, and the 8-bit host address space identifies 254 hosts per network. --------------------------------------------------------------------------------------------- Class A: 11111111 . 11111111 . 11111111 . 11111111 Netaddy. Host......................... Limited to 0 to 127.0.0.1 126 . 168 .0 . 2 01111110 . 10101000 . 00000000 . 00000010 255.0.0.0 Class B: 11111111 . 11111111 . 11111111 . 11111111 Network address..... . Host............... Limited to 128 to 191.0.0.1 164 . 182 . 40 . 20 10100100 . 10110110 . 00101000 . 00010100 255.255.0.0 Class C: Network address............... . Host..... Limited to 192 to 255.0.0.1 11111111 . 11111111 . 11111111 . 11111111 203 . 59 . 51 . 222 11001011 . 00111011 . 00110011 . 11011110 255.255.255.0 192. |____| = An octet, due to the fact they hold 8 bits. --------------------------------------------------------------------------------------------- MSAU = Multiple station access unit.(A token is transmitted one PC to the MSAU where it is passed on to the next PC in the ring. It is then passed back and forward from the MSAU to the PCs in the ring. FDDI = Fibre Distrbuted Data Interface.(Developed mid 1980s, uses fibre-optic cable, goes at 100 Mbps. Used for fast access to network servers. Simlar to token ring, uses tokens as basic unit of communicati PSTN = Public switched telephone network.(Voice graded analog telephone line) SMDS = Switched Multimegabit Data Services (Supports data transmission, converts frames recieved from lans into fixed length cells for transfer across the DQDB. Supports up to 512 devices which can extend up to 160km, max speed 155 Mbps. DQDB = Distributed Queue Dual bus (special network architecture used by SMDS, consists of two shared fibre-optic calbes. From customer to SMDS switch. ISDN = Integrated digital network.(Worldwide WAN technology for delievering voice, data and video services over telephone lines. Fast and reliable com...