Description
Question One
Q 1. Assume an organization has the classless address 15.25.16.8/17, then find the
following:
a) The first address
b) The last address
c) The total number of addresses
d) The network address
e) Does the address 15.25.15.127 belongs to this address space?
f) Does the address 15.25.128.0 belongs to this address space?
Question Two
Q2.
a) In an IPv4 packet, the value of HLEN is (1010)2 , and the value of the total
length field is (005A)16. How many bytes of data are being carried by this packet?
b) A packet has arrived in which the offset value is 175, the value of HLEN is 10,
and the value of the total length field is 100. What are the numbers of the first
byte and the last byte?
Learning
Outcome(s):
Understand the
notation of the
classless IPv4
address.
Be able to find
different
information (like
first address, and
range of
addresses) from a
given classless
IPv4 address.
Learning
Outcome(s):
To understand the
IPv4 datagram
format and the
purpose of
fragmentation in a
datagram.
1.2 Marks
1.3 Marks
Pg. 04 Question Four
Question Three
Q3. What are the three phases needed in virtual circuit approach? What type of
packets is used in each phase?
Learning
Outcome(s):
Understand the
virtual circuit
approach of
packet-switched
networks.
0.5 Marks
Pg. 04 Question Four
Question Four
Q 4. See the network shown below. The figure consists of four automatous systems
(ASs) each running RIP as an internal routing protocol. Moreover, iBGP and eBGP
are used as border gateway protocols. AS4 is connected to an external network
called “x.”By carefully examining the figure below, answer the following questions:
a)Which protocol is used to tell router 1b about network x? iBGP, eBGP, RIP or
OSPF?
b) Which protocol is used to tell router 2b about network x?
c) Which protocol is used to tell router 3b about network x?
d)Which protocol is used to tell router 1c about network x?
