With a virtual private network, users create permanent virtual circuits through the Internet called:
a. bursts
b. cells
c. tunnels
d. rings
e. clouds
Answer: C
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Business Data Communications Chapter 9
- Most IP services use _______ as the data link layer protocol.
- With IP services, the ________ at the sending site takes the outgoing message (which usually is an Ethernet frame containing an IP packet), strips off the Ethernet frame and uses the IP address in the IP packet to route the packet though the carrier's packet-switched network to its final destination.
- Which of the following is not a key issue to be considered when selecting a WAN service?
- Which of the following is not a way to reduce network demand?
- Dynamic routing:
- The performance of WANs can be improved by:
- ________ is a term that refers to the speed in converting input packets to output packets.
- Which of the following is not a type of VPN?
- _________ is a common standard for use by layer 2 access VPNs for encapsulation.
- Which of the following is a primary advantage of a VPN?
- A _______ is a particular type of network that uses circuits that run over the Internet but that appears to the user to be a private network.
- Ethernet/IP packet networks:
- _____ is sometimes called a Layer 2.5 technology.
- OC-3072 has a data rate of
- ___ are sometimes called private line services.
- In a packet switched network, permanent virtual circuits that look very similar to a _____________ (for hardware-based dedicated circuits) move packets through the network.
- A _________ is a connection-oriented approach to sending packets on a packet switched service.
- A _______ is a connectionless method of sending data packets on a packet switched service.
- Which of the following type of networks permit packets from separate messages to be interleaved?
- A ______ is a user's connection into a packet switched service.
- Which of the following is not a benefit of packet switched services?
- SONET:
- The data rate for a T-3 circuit in North America is:
- In North America, a T1 circuit has ______ 64Kbps channels.
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