6. La/R - 0: A. avg, queueing delay large B. avg. queueing delay small C. average delay infinite! A. traffic intensity 7. injection of packet with false source address, A. IP trailer sniffing B. Packet capture (pcap) C. IP spoofing D. IP stacking 8. Which one is wrong?? A. web server software communicates with browser software B. network-core devices do not run user applications C. network apps are not considered P2P file sharing D. applications on end systems allows for rapid app development, propagation 9. processes in different hosts, A. communicate by exchanging messages B. communicate using inter-process communication C. running within a host D. communicate using intra-process routing 10. to send HTTP message to google web server: A. port number: 80 B. port number: 180 C. port number: 800 D. port number: 90 11. Transport service does not include......" A. data integrity B. throughput C. security D. delay 12.Non-persistent HTTP: A. requires 1 RTTs per object B. requires 2 RTTs per object C. 2 RTT to initiate TCP connection D. 2 RTT for HTTP request 13. Which option is not in request line of HTTP message? A. URL B. version C. value D.cr 14. Which one is not the cookies components?! A. cookie header line of HTTP drop message B. cookie header line in next HTTP request message C. cookie file kept on user's host, managed by user's browser D. back-end database at Web site 15. sender adds sequence number to each pkt : A. handling ACK/NAK B. handling fatal flaw C. handling duplicates D. handling garble