11.1.7 Practice Questions
Question: What is the speed of an OC-3 connection
Answer: 155 Mbps
Question: To access the internet through the PSTN, what kind of connectivity device must you use
Answer: Modem
Question: Which of the following technologies uses variable-length packets, adds labels to packets as they enter the WAN cloud, and uses the labels to switch packets and prioritize traffic
Answer: MPLS
Question: Which of the following are characteristics of MPLS
Answer: -Supports variable-length data units
-Adds lables to data units
Question: Which of the following are characteristics of ATM
Answer: -Uses fixed-length cells of 53 bytes
-Adds labels to data units
Question: Which of the following are the the WAN service provider’s responsibility to maintain
Answer: -CO, DCE, Local loop, PSE
Question: Which network type divides transmitted data into smaller pieces and allows multiple communications on the network medium
Answer: packet-switched
Question: Which network type establishes a dedicated physical connection between two hosts in order to transmit time-sensitive data
Answer: circuit-switched
Question: Which of the following WAN technologies provides packet switching over high-quality digital lines at speeds greater than 1.544 Mbps
Answer: frame relay
Question: You are implementing internet connectivity for a new start-up company. Your client will provide online storefronts for retailers. To do this, they have calculated that their internet connection must provide a data rate of at least 20-30 Mbps.
Answer: T3