THE UNIVERSITY OF HONG KONG
FACULTY OF ENGINEERING
DEPARTMENT OF COMPUTER SCIENCE
COMP3322/CSIS0322 Modern Technologies on World Wide Web
Date: December 17, 2015
Time: 2:30 pm -
5:30 pm
University Number:
Only approved calculators as announced by the Examinations Secretary can
be
used in this
examination.
It
is the candidates' responsibility
to
ensure that their calculator operates
satisfactorily,
and
candidat
es
must record the name
and
type
of
the calculator used on the
front page
of
the examination script.
Candidates are allowed
to
bring into the examination hall one piece
of
A4 paper with printed
or
written notes on both sides.
Answer ALL questions in the space provided.
Write your university number at the top
of
each page.
Total mark is 100.
Question
Score·
·
1 (20%)
2 (21 %)
3 (25%)
4 (24%)
5 (10%)
Total
(100%)
Page
1
of
14
Question
1 (20%):
Answer
the
following
questions.
(1)
Give
three
differences
between
TCP
and
UDP
.
(2)
Gi
_
ve
three
differences
between
HTML
and
XML.
(3)
Explain
what
each part (separated
by
//,
:,
/,
?,
or
#)
means in
the
following
URL:
h
_nR.?..
1-f!g_QJ
.?
..:.
~!f.
o
rg:
?-9~.Q/..ht1J1Jl.r..fQ
.
~~lP...9Ee
=:~J!.?..~£
t
i
o
n-
3...J.
Page
2of14
UID
{4
)
Briefly
compare HTMLS localStorage, HTMLS sessionStorage, cookie and session
techno
logies.
{5) Briefly compare
SOAP
Web
service and RESTful web service.
{6) Briefly explain
the
relationship
among
node.js, express.js and Jade.
Page 3
of14
Question
2 (21%):
Consider
the
following
network. There are
two
subnets connected by one
router.
Suppose
the
network
prefix in Subnet 1
is
223.1.10.168/29 and
the
network
prefix
in
Subnet 2
is
223.1.12.80/28.
Router
Sw
itch 2
i
\:'...:::·::t~,i
·.
Host B
......
__
·-
...
------··""'"
..
.............
-
....
:-~-._
.
.;.__
..
_:
....
;__,
______
,..
:
~·
Hoste
(1)
(6%)
Allocate
an
IP
address
to
each interface in each
of
the
two
subnets.
(2)
(7%)
Suppose WiFi
is
used
as
the
link-layer protocol
between
Host C and Switch
2,
and
Ethernet
is
used
as
the
link-layer
protocol
on all
the
other
links in
the
network. Host A
is
sending a data file
to
Host C using
FTP
. List
the
protocols
that
each host/device along the
path
from
Host A
to
Host C runs
to
enable
the
file delivery,
together
with
the layers
that
the
protocols belong
to
in
the
Internet
protocol
stack. Note
that
you
only
need
to
list protocols
in
the
upper
four
layers, and there
is
no need
to
give physical-layer protocols.
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- Fall '13
- Dr. C. Wu
- Computer Science, IP address, Web page, Subnetwork, Ocean Park Hong Kong, Wong Chuk Hang
