CSCi 434 please try do all question

Question 3 (1 point) Which of the following delay sources has a strong correlation with the length of the link between two nodes? 1) processing delay 2) queuing delay 3) transmission delay O 4) propagation delay Question 4 (1 point) Which of the following statements is true? 1) Circuit switching is better for providing specified quality of service than packet switching. 2 Circuit switching is better for handling bursty traffic (with highly variable data rates) than packet switching. 3) Packet switching reserves network resources for an end-to-end communication for guaranteed service. 4) With packet switching, packet loss does not occur by using a dedicated end- to-end connection between two hosts. Question 5 (1 point) Which of the following DNS RR types is used for mail servers? 1) type=A 2) type=NS 3) type=CNAME 4) type=MX Question 6 (1 point) sends a significant number of packets to the target host. 1) Bandwidth flooding 2) Connection flooding 3) Vulnerability attack 4) Sniffing attack Question 11 (1 point) A server program is running on a(n) 1) host 2) router 3) switch 4) DSLAM