91Ó°ÊÓ

Exercises are given fractional (floating point) numbers, to allow for interpolation of new exercises. Exercise \(6.5\) is distinct, for example, from exercises \(6.0\) and \(7.0 .\) Exercises marked with a \(\diamond\) have solutions or hints at \(24.7\) Solutions for IPv4. 2.0. How can a receiving host tell if an arriving IPv4 packet is unfragmented? Hint: such a packet will be both the "first fragment" and the "last fragment"; how are these two states marked in the IPv4 header?

Exercises are given fractional (floating point) numbers, to allow for interpolation of new exercises. Exercise \(6.5\) is distinct, for example, from exercises \(6.0\) and \(7.0 .\) Exercises marked with a \(\diamond\) have solutions or hints at \(24.7\) Solutions for IPv4. 3.0. How long will it take the IDENT field of the IPv4 header to wrap around, if the sender host A sends a stream of packets to host B as fast as possible? Assume the packet size is 1500 bytes and the bandwidth is \(600 \mathrm{Mbps}\).

Exercises are given fractional (floating point) numbers, to allow for interpolation of new exercises. Exercise \(6.5\) is distinct, for example, from exercises \(6.0\) and \(7.0 .\) Exercises marked with a \(\diamond\) have solutions or hints at \(24.7\) Solutions for IPv4. 6.0. For each IPv4 network prefix given (with length), identify which of the subsequent IPv4 addresses are part of the same subnet. (a). \(\mathbf{1 0 . 0 . 1 3 0 . 0 / 2 3 :} 10.0 .130 .23,10.0 .129 .1,10.0 .131 .12,10.0 .132 .7\) (b). \(\mathbf{1 0 . 0 . 1 3 2 . 0 / 2 2 :} 10.0 .130 .23,10.0 .135 .1,10.0 .134 .12,10.0 .136 .7\) (c). \(\mathbf{1 0 . 0 . 6 4 . 0} / \mathbf{1 8}: 10.0 .65 .13,10.0 .32 .4,10.0 .127 .3,10.0 .128 .4\) (d). \(\diamond \mathbf{1 0 . 0 . 1 6 8 . 0 / 2 1 :} 10.0 .166 .1,10.0 .170 .3,10.0 .174 .5,10.0 .177 .7\) (e). \(\mathbf{1 0 . 0 . 0 . 6 4 / 2 6 :} 10.0 .0 .125,10.0 .0 .66,10.0 .0 .130,10.0 .0 .62\)