ipconfig /release - On LiNe iT cLaSs

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26 Οκτ 2013 (πριν από 4 χρόνια και 13 μέρες)

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Chapter 15 Study Guide


Advanced Networks

1


Which two hazards exist when working with fiber optic cabling:



1. chemicals



2. Glass splinters


2.

You have to wear safety glasses when working any type of cable.

3. Site Survey: When a

technician is performing a physical inspection of the facilities
to determine the flow of data and protocols required by the client.


4. Internet Protocols:


note : HTTPS

provides secure transport of data
.

5.List the

main considerations that the tec
hnician should remember when choosing an
Internet connection:

1.

A
vailability
.

2.

R
eliability
.

3.

S
peed





6. IP Classes



7.

The following are common Microsoft Windows

network

commands

a.

ipconfig

T
o display the network settings currently assigned to any or all network
adapters in the machine.



If you have any duplicated IPs in your network use
the following commands:


ipconfig /release

and
ipconfig /renew

commands


b.

netstat

Displays active TCP
connections,


c.

tracert

The tracert command is used to visually see a network packet being sent and
received and the amount of hops required for that packet to get to its
destination.

d.

ping

Helps in determinin
g TCP/IP Networks IP address as well as determine issues
with the network and assists in resolving them.

e.

telnet

Telnet is software that allows users to remotely access another computer such
as a server,

f.

nslookup

Displays information that you can use to di
agnose Domain Name System
(DNS) infrastructure.

7.

Which three ports are used by SMTP, POP
,HTTP
, and IMAP?



25
,
110
,

80

and
143


9.
What are two ways to assign an IP address to a wireless NIC?


Assign a static address

and
Use DHCP.


10
.

N
etwork
C
ables can
be limited to

a.10Mbps : very old and slow

b.100bps

c.1000Mbps.




11.
How to share a printer in windows XP:
?


#Start > Control Panel > Printers and Faxes > File > Add Printer


12
.
If you are unable to login to

FTP server.

What is the cause of the problem?



#
A
n incorrect username or password.


13.
Which action should a user take to ensure that personal information that is
entered into a website form is not retained on the computer?



#Delete the temporary Internet files.


14.
If you
find


a
hosts with
duplicate static IP addresses. Which protocol could
be used to resolve this issue?

DHCP


15.
A technician is working on a host computer that fails to obtain an IP
address. Which three actions could the technician perform to determine the
cause of the problem?



#Check the DNS server to ensure that it is operating correctly.



#Check that the
DCHP server is operational.



#Check the PC firewall settings to make sure that DHCP is allowed.


16.
A user is receiving e
-
mail on a regular basis from a particular person. A
problem occurs when the e
-
mail from this same person contains an
attachment. W
hat is one solution?



#Ask the IT department to permit port 25 through the firewall.


17.
What are two possible causes of e
-
mail attachments not being received
with e
-
mail messages?



#The firewall could be blocking port 21,



#The e
-
mail server co
uld not be receiving e
-
mail messages that are using
POP.