CSCI 434 please try do all question

Question 22 (1 point) Which of the following is unlikely to be a type of access networks? 1) physical access 2) residential access 3) company (institutional) access 4) wireless (mobile) access Question 23 (1 point) To obtain the corresponding IP address from a host name, what type of DNS records will be looked up? 1) type=A 2) type=NS 3) type=CNAME 4) type=MX Question 24 (1 point) Which of the following statements is not true for local DNS servers? 1) ISPs often provide default name servers. O2) A local DNS server performs like a proxy. 3) A local DNS server maintains a local cache to speed up. 4) A local DNS server provides publicly accessible DNS records that map the names of the hosts within the organization to IP addresses. Question 25 (1 point) Suppose Host A wants to send a large file to Host B. The path from Host A to Host B has four links, of rates R1 = 3.5 Mbps, R2 = 2.5 Mbps, R3 = 3 Mbps, and R4 = 3.5 Mbps. Assuming no other traffic in the network, what is the throughput for the file transfer? 2 Mbps 2) 3 Mbps 3) 2.5 Mbps 4) 3.5 Mbps Previous Page Next Page Page 25 of 30