WCDMA OAM Verification Engineer –BJ

1-1Explain/Describe the UMTS physical network architecture, and indicate the interface used between devices.
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<!--[endif]-->In UMTS,what’s the difference between AAL2 and AAL5?
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<!--[endif]-->In UMTS,what do FDD and TDD mean?
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<!--[endif]-->Describe the processor of hardover and soft handover?
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<!--[endif]-->Describe the spread mechanism used in UMTS, and please draw the power spectrum before and after spreading.
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<!--[endif]-->Please describe the functionalities of rake receiver?
2-1 Explain (draw) the 4 TCP-IP layer.
2-2 What’s DNS? What’s domain name? What’s the relationship between IP address and domain name?
2-3 What’s IP routing? Please list and explain several routing protocols.
2-4 What’s the function of firewall?
2-5 Please explain telnet and ssh protocol.What’s the difference between them?
3-1 List the Network Management System you know.
3-2 What’s the purpose of UMTS Network Management System.
3-3 List all the functions UMTS Network Management tool should provide and give your explanation about these functions.
3-4 Please describe the network performance optimization in UMTS network management system?
4-1 What are the meaning of these commands.
ls
df
cp
chmod
chown
mv
tar
cpio
init 0
init 6
vi aa.txt
ifconfig
netstat-a
ps
grep
find(give example)
iostat
uname
cat
more
tail
head
wc
5-1 In a Unix shell script, how to export the number of arguments of a script?
5-2 There is one variable in the shell script named “sample name”, please write a script to check whether it is a file or a directory name. Please output in this format: directory : samplename or file: samplename.
5-3 Please write a Unix shell script which ask user to input a sentence and output each work in a line.
for example:

input :

run test3.sh

promt : enter some text : I like the korn shell.

Output :

I

like

the

korn

shell
5-4 Please write a regular expression to replace “Micheal” with “Mike” in this file :ResumeOfMicheal and output to another file named ResumeOfMike.
6-1 Explain the meaning og the following computer science abbreviations

UML
CORBA
IDL
JRE
JNLP
JMS
DHCP
VBA
DLL
DDBC

6-2 Please list the software life cycle model you know .describe one model in terms of advantage and disadvantage.