Y

1. Yotta. A septillion (1024), or 1,000,000,000,000,000,000,000,000. See YB. 2. The symbol for yttrium. See yttrium.

• CIP (Classical IP over ATM)
• cipher
• CIR (Committed Information Rate)
• circuit
• circuit switch
• circuit-switched data (CSD)
• circuit-switched network
• circuit terminating equipment
• Citizens Band (CB)
• cladding
• Clarke orbit
• Clarke, Sir Arthur C. (1917–)
• Class 1
• Class 1
• Class 2
• Class 2
• Class 3
• Class 4
• Class 4/5
• Class 5
• Class A ATM traffic
• Class A cable
• Class A IP address
• Class B ATM traffic
• Class B cable