1. Which traditional WAN connectivity option uses T-Carrier or E-Carrier lines?
- ATM
- Frame Relay
- ISDN
- Leased lines
- PSTN
Explanation: Leased lines use T-Carrier or E-Carrier lines.
2. Which two traditional WAN connectivity options are circuit-switched? (Choose two.)
- ATM
- Frame Relay
- ISDN
- Leased lines
- PSTN
Explanation: ISDN and PSTN are WAN circuit-switched connectivity options.
3. Which two traditional WAN connectivity options are packet-switched? (Choose two.)
- ATM
- Frame Relay
- ISDN
- Leased lines
- PSTN
Explanation: ATM and Frame Relay are WAN packet-switched connectivity options.