CHAPTER 11: Unicast Routing Protocols (RIP, OSPF) In regard to routing tables: a. There exist two ki
CHAPTER 11: Unicast
Routing Protocols (RIP, OSPF)
In regard to routing tables:
exist two kinds of routing tables, What are` they?
definition of each one.
the definition and picture of Intra-domain routing and Inter-domain routing.
can we determine if an IP packet is carrying an ICMP packet?
From the practice exercise section 11.12, page 331.
a. Exercise 6. Use 40 entries.
19 & provide the routing table for node A
20 & Provide the routing table for node B
21 & Provide the routing table for node G
A sender sends a series of packets to the same destination
using 4-bit sequence of numbers. If the sequence number starts with 0,
what is the sequence number of the 120th packet?
Redraw figure 13.18 with 5 packets exchanged (0, 1, 2, 3,
and 4). Assume that packet 3 is lost, and packet 2 arrives after packet 4.
Redraw figure 13.28 if the sender sends 5 packets(0, 1, 2,
3, and 4). Packets 0, 1, and 2 are sent and acknowledged in one single
ACK, which arrives at the sender site after all packets have been sent.
Packet 3 is received and acknowledged in a single ACK. Packet 4 is lost
14: User Datagram Protocol
a. In cases where
reliability is not of primary importance, UDP would make a good transport
protocol. Give examples of specific cases;
two examples of specific cases where UDP will not be a good transport protocol
to send data;
Show the entries
for the header of a UDP user datagram that carries a message from a TFTP client to a TFTP
server. Fill the check sum with 0s. Choose an appropriate ephemeral port
number and the correct well-known port number. The length of data is 40
bytes. Show the UDP packet using the format in figure 14.2.
a. A client uses
UDP to send data to a server. The data length is 16 bytes. Calculate the
efficiency of this
transmission at the UDP level (ratio of
useful bytes to total bytes).
b. Redo (a), calculating the efficiency of
transmission at the IP level. Assume no options for the IP
15: Transmission Control Protocol
a. What is the
maximum size of the TCP header; What is the minimum size of the TCP header?
b. If the value of the HLEN = 0111, how many
bytes of option are included in the segment?
a. Show the
entries for the header of a TCP segment that carries a message from an FTP
client to an FTP
server. Fill the check field with 0s.
Choose an appropriate ephemeral port number and the correct well-know port
number. The length of data is 50 bytes.
b. TCP is sending data at 1 megabyte per
second. If the sequence number starts with 7,000, how long does it take before
the sequence number goes back to zero?
In a TCP connection, the initial sequence number at the
client site is 2,171. The client opens the connection the connection,
sends only one segment carrying 1,000 bytes of data, and closes the
connection. What is the value of the sequence number in each of the
following segments sent by the client?
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