Be sure to show all work for full or partial credit

assistantashamedData Management

Nov 29, 2012 (4 years and 10 months ago)

202 views

CET489/583

Network Administration with
TCP/IP

S
ummer

200
6


Midterm Exam

Name:




1
/
5

Be sure to
show all work

to get partial credit. Remember, verbose is better
than too few words for partial credit purposes.


1.

Given the network definition 103.240.160.0/19


a)

(
2

points)

What is
the subnet mask
?





b
)

(
2

points)

Wh
at is the broadcast ad
dress
?





c
)

(
2 points)

How many IP’s can be assigned to physical devices?





2.

a)
(
4

points)

How does ARP work
?









b
)

(
2

points)

Why is ARP necessary?





3.

a)
(4 points)

How does DHCP work?










b
)

(
2

points)

How is DHCP useful?






CET489/583

Network Administration with
TCP/IP

S
ummer

200
6


Midterm Exam

Name:




2
/
5

4.

(4 p
oints)
Give two cases when you would use an ethernet hub rather than an ethernet
switch. (Hint: ethernet performance improvement is not one of them.)








5
.

(4 points)
What
are two Linux commands that can be used to provide routing (forwarding)
table in
formation
?







6.

(4 points)
Wh
at configuration file is used by client software on workstations to get the IP
address of the local name

server
?





7.

(2

points)
Many widely used
network software applications, clients, and
servers use

a
command set based on

ASCII that can be “spoofed.” What application protocol and software
package can accomplish this
?






8.

a) (3 points)

What is Network Address Translation and how does it work?








b) (
2

points)

What are two advantages of Network Address Translation?






CET489/583

Network Administration with
TCP/IP

S
ummer

200
6


Midterm Exam

Name:




3
/
5

8.

c
) (
3

points)

What are

three disadvantages of Network Address Translation?








d) (4 points)
Technically, how does
Network Address Translation functionality on a
router/firewall protect hosts on the network behind it?







9.

(
6

points)

In DNS
zone files there may be an SOA record. What is an SOA and why are they
necessary
?








10.

In this question do => {deliver | drop | crash

| roll the dice
}.

a) (2 points)

What should an ISP SMTP Transport Agent do if it receives mail from the
Internet wit
h a “From:” line on the Internet and destined for an ISP host?




b
) (
2

points)

What should an ISP SMTP Transport Agent do if it receives mail from the
Internet with a “From:” line on the ISP and destined for an ISP host?




c
) (
2

points)

What should an IS
P SMTP Transport Agent do if it receives mail from the ISP
with a “From:” line on the Internet and destined for an ISP host?




d
) (
2

points)

What should an ISP SMTP Transport Agent do if it receives mail from the ISP
with a “From:” line on the ISP and des
tined for an Internet host?



11.

(
2

points)
Where is the default Apache configuration file located (full path)
?



CET489/583

Network Administration with
TCP/IP

S
ummer

200
6


Midterm Exam

Name:




4
/
5

12.

(
2

points)

What is the
default Squid proxy server’s HTTP port number?






14.

(4 points)

On the Linux systems used in the class lab
, what co
nfiguring is necessary to
ensure that forwarding is enabled after reboots?







15.

(6 points)
What I
P
tables configuration is needed to run NAT as used in Project 3?








16.

(8 points)
What are 4 of the 5 required network information items needed to config
ure the
DHCP server?









17.

(4 points)
Where is the

samba server configuration file located?





18.

(6 points)
How do you configure a samba client?







CET489/583

Network Administration with
TCP/IP

S
ummer

200
6


Midterm Exam

Name:




5
/
5

19.

(4 points)
How does a user (student) on a remote client access a postgresql data base (cst583)
on a
host (dbserv at 192.168.25.52) on port 23456?






20.

(6 points)
How do you allow for UDP or TCP return traffic that is delayed an dnot part of an
identifiable connection to a server behind a NAT router?