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 CCNA interview questions  CCNA Interview Questions
 CCDA interview questions  CCDA Interview Questions
Question
what is firewall 
 how fiarewall work
how many interfaeces in the cisco pix 501 firewall
what is the working of that dmz interface
 Question Submitted By :: Jitendera Sinha
I also faced this Question!!     Rank Answer Posted By  
 
  Re: what is firewall how fiarewall work how many interfaeces in the cisco pix 501 firewall what is the working of that dmz interface
Answer
# 1
i know most of you are not awrae of the firewall
so i am providig the answers
firewall is a router type divice but not a rputer which act 
as a boder betwenn externel network(LIKE internet)and 
internel network that is private network 
it act as a border in a such maneer that it doesnot allow 
the unwanted trafic from out side to inside
there are two tye of firewall
s/w based (YOU HAVE ON YOUR WINDOWX XP CHECK IT OUT)
and hardwair bassed
like cisco sonicfirewall and more

ciscp [pix 501 is a cisco brand firewall and it have 3 
interfaec
1 intside intrefafec -through that  internel lan is conected
2 ouside interfae-thriugh thatexternel network is conected
3 one is dmz

i will expalin it latter till then i am waitng for your 
reply now have give you introductio trying to find it all 
interfaec working principle nither at last hera i am and 
sudeep is there for helping all of us
 
Is This Answer Correct ?    0 Yes 0 No
Jitendera Sinha
 

 
 
 
Other CCNA Interview Questions
 
  Question Asked @ Answers
 
Which layer hides details of network dependent information from the higher layers by providing transparent data transfer? A.) Transport B.) Physical C.) Data Link D.) Session E.) Application F.) Network  2
You are logged into a router, what command would show you the IP addresses of routers connected to you? A. show cdp neighbors detail B. show run C. show neighbors D. show cdp  2
Which protocol resolves an IP address to a MAC address? A.) DHCP B.) RARP C.) ARP D.) NBP E.) DNS  3
Which commands would assign and enable IPX on an interface ? A.) enable netware B.) enable novell-ether C.) router#(config)ipx routing D.) You must first enable IPX globally and then assign the network number to the interface . E.) enable ipx F.) router#(config-if)ipx network 4a  1
what is the difference between hdlc and ppp protocol ASD-Lab4
what is meant by domain ? what is mean by DNS?  14
Identify 3 characteristics of switches? A.) Increase available bandwidth B.) Decrease broadcast traffic C.) Support full duplex in a multipoint topology D.) Make fowarding decision using MAC address E.) Create collision domains  1
Which two does 100BaseT use? A.) CSMA/CD B.) IEEE 802.5 C.) 802.3u D.) Switching with 53-byte cells  1
Identify the OSI layer associated with bits? A.) Physical B.) Network C.) Binary D.) Data link  2
Which of the following is an example of the Network Layer? A.) TCP B.) IP C.) SQL D.) Token Ring E.) LLC  1
Scenario: You created 2 access-lists for controlling telnet about a year ago, and bound one of them to Serial 0. You can't remember which access-list you used. Which command lets you see all access-lists on Serial 0 for telnet? A.) show access-list B.) show ip int s0 C.) show access-list telnet D.) show telnet access-list E.) show access-list s0 F.) show int s0  2
Which memory component on a Cisco router contains the dynamic system configuration? ROM NVRAM Flash RAM/DRAM HCL16
Which layer is responsible for flow control, acknowledgement, and windowing? A.) Transport B.) Network C.) Application D.) Session E.) Physical F.) Data Link  2
Which layer of the 7 layer model is responsible for representing the application information between 2 different OS's? For example, converting ASCII to EBCIDIC. A.) Transport B.) Application C.) Physical D.) Session E.) Presentation F.) Network  2
Identify the components in the following command 'interface serial0/1/1' A.) Serial interface, port number 0, slot 1, port adapter 1 B.) Serial interface, slot 1, port number 1, port adapter 0 C.) Serial interface, slot 0, port adapter 1, port number 1  2
What is true when using DDR? A.) HDLC is the preferred encapsulation B.) You must use static routing C.) You should use dynamic routing D.) You should use ISDN  1
CSMA/CD stand for which of the following? A.) Carrier Sense, Multiple Access with Collision Detection B.) Collision Sense, Multiple Access with Collision Detection C.) Collision Sense, Multiple Access with Carrier Detection D.) Carrier Sense, MAC address with Collision Detection  3
Which of the following protocols are used to get an IP address from a known MAC address? A.) BootP B.) TCP C.) IP D.) ARP E.) RARP F.) ICMP  1
Hi Gyes, here is new question. can you provide answer of following question Like linux, can we windows as router? If yes how can we able to do this,  2
What does the User Datagram Protocol (UDP) provide? A.) Connectionless datagram service. B.) FECN & BECN C.) Flow control and error checking. D.) Name resolution. E.) Path discovery.  1
 
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