TCP IP Illustrated

Discard solaris32990 ack 258 win 3840 bsdidiscard

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Unformatted text preview: Obviously the hardware address for host svr4 must be in the ARP cache on bsdi. What would change in this figure if this ARP cache entry was not present? 18.9 Explain the following tcpdump output. Compare it with Figure 18.13. 1 0.0 2 3 4 5 6 7 0.003295 (0.0033) 0.419991 (0.4167) 0.449852 (0.0299) 0.451965 (0.0021) 0.464569 (0.0126) 0.720031 (0.2555) solaris.32990 > bsdi.discard: S 40140288:40140288(0) win 8760 <mss 1460> bsdi.discard > solaris.32990: S 4208081409:4208081409 (0) ack 40140289 win 4096 <mss 1024> solaris.32990 > bsdi.discard: P 1:257(256) ack 1 win 9216 solaris.32990 > bsdi.discard: F 257:257(0) ack 1 win 9216 bsdi.discard > solaris.32990: . ack 258 win 3840 bsdi.discard > solaris.32990: F 1:1(0) ack 258 win 4096 solaris.32990 > bsdi.discard: . ack 2 win 9216 18.10 Why doesn't the server in Figure 18.4 combine the ACK of the client's FIN with its own FIN, reducing the number of segments to three? file:///D|/Documents%20and%20Settings/bigini/Docu...homenet2run/tcpip/tcp-ip-illustrated/tcp_conn.htm (36 of 37) [12/09/2001 14.47.16] Chapter 18. TCP Connection Establishment and Termination 18.11 In Figure 18.16 why is the sequence number of the RST 26368002? 18.12 Does TCP's querying the link layer for the MTU violate the spirit of layering? 18.13 Assume in Figure 14.16 that each DNS query is issued using TCP instead of UDP. How many packets are exchanged? 18.14 With an MSL of 120 seconds, what is the maximum at which a system can initiate new connections and then do an active close? 18.15 Read RFC 793 to see what happens when an end point that is in the TIME_WAIT state receives a duplicate of the FIN that placed it into this state. 18.16 Read RFC 793 to see what happens when an end point that is in the TIME_WAIT state receives an RST. 18.17 Read the Host Requirements RFC to obtain the definition of a half-duplex TCP close. 18.18 In Figure 1.8 we said that incoming TCP segments are demultiplexed based on the destination TCP port number. Is that correct? file:///D|/Documents%20and%20Settings/bigini/Docu...homenet2run/tcpip/tcp-ip-illustrated/tcp_conn.htm (37 of 37) [12/09/2001 14.47.16] Chapter 19. TCP Int...
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This test prep was uploaded on 04/04/2014 for the course ECE EL5373 taught by Professor Guoyang during the Spring '12 term at NYU Poly.

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