| 2.1
|
We have mentioned IP versions 4 and 6. What
happened to version 5 and what were versions 0, 1, 2, and 3?
(Hint: Find the IANA's "Internet
Protocol" registry. Feel free to skip ahead to the solution if you
cannot visit http://www.iana.org.)
|
| 2.2
|
Where would you look to find more information
about the protocol that is assigned IP version 5?
|
| 2.3
|
With Figure 2.15, we said
that TCP assumes an MSS of 536 if it does not receive an MSS option
from the peer. Why is this value used?
|
| 2.4
|
Draw a figure like Figure 2.5 for the
daytime client/server in Chapter 1, assuming the server
returns the 26 bytes of data in a single TCP segment.
|
| 2.5
|
A connection is established between a host on an
Ethernet, whose TCP advertises an MSS of 1,460, and a host on a
Token Ring, whose TCP advertises an MSS of 4,096. Neither host
implements path MTU discovery. Watching the packets, we never see
more than 1,460 bytes of data in either direction. Why?
|
| 2.6
|
In Figure 2.19, we said
that OSPF uses IP directly. What is the value of the protocol field
in the IPv4 header (Figure A.1) for
these OSPF datagrams?
|
| 2.7
|
In discussing SCTP output, we said that the SCTP
sender must wait for the cumulative acknowledgment point to pass
sent data before the data could be freed from the socket buffer. If
a selective acknowledgment shows that data is acknowledged beyond
the cumulative acknowledgment point, why can't the data be
freed?
|
