45.Table 4.16 is a routing table using CIDR. Address bytes are in hexadecimal. The notation “/12” in C4.50.0.0/12 denotes a netmask with 12 leading 1 bits, that is, FF.F0.0.0. Note that the last three entries cover every address and thus serve in lieu of a default route. State to what next hop the following will be delivered.
(a) C4.5E.13.87.
(b) C4.5E.22.09.
(c) C3.41.80.02.
(d) 5E.43.91.12.
(e) C4.6D.31.2E.
(f) C4.6B.31.2E.
第五章
（5.1 5.2节）
10. You are hired to design a reliable byte-stream protocol that uses a sliding window (like TCP). This protocol will run over a 1-Gbps network. The RTT of the network is 140 ms, and the maximum segment lifetime is 60 seconds. How many bits would you include in the AdvertisedWindow and SequenceNum ?elds of your protocol header?
第六章
（6.5节）
第九章
（9.1节）
