With the use of leased lines, a company currently connects to its five remote branch offices. Which alternative could be used to provide connection-oriented, high performance, packet-switched connectivity?
A. PPP
B. DSL
C. ISDN
D. Frame Relay
E. POTS
Answer: D
Explanation:
Frame Relay uses statistical multiplexing techniques to provide network access in a packet-switched network. There are three packet switching technologies which can be
used:
1. Frame Relay
2. X.25
3. ATM
ISDN also contains some packet switching techniques, but only frame relay is connection oriented. Frame relay also offers higher speed options.