computer networks

Problem 1 Fill in the blanks. [1 pt per question) 1. From a system view, the Internet consists of a network of interconnected ISP networks , and 2. Specify whether the connection between hosts and the access router is shared or dedicated for each of the following access networks: DSL and cellular and 3. The two key network-core functions are 4. The four sources of packet delay at a single hop include processing delay. 5. The three tiers of Internet core are: Tier-1 ISPs/large content provider 6. T (True) or F (False): Client process is a process running on a client 7. T or F: Any single-bit error can be detected by checksum, but a multi- 8. A UDP socket is uniquely identified by 9. Give two reasons for an application to prefer UDP over TCP: 10. Suppose host A sends a TCP segment to host B with sequence number , transmission delay, and networks and host, and server process is a process running on a server host. bit error may not. and and 22, acknowledgement number 89, and a payload of 120 bytes. The return segment from and acknowledgement number