Networks and Security Interview Questions

NAT means Network Address Translation , NAT helps the Private IP to route over the public Internet, its translate private IP to a public IP by one to one or many to one, PAT means Port Address Translation ,its translate based on source port

NAT : Short for Network Address Translation, an Internet standard that enables a local-area network (LAN) to use one set of IP addresses for internal traffic and a second set of addresses for externa...

It means that it is in class c network

Hi,

If a Computer has ip address 10.1.1.5 and subnet Mask 255.255.255.0 then it means it is classless ip address where class is not defined or not a subnetted ip address.

Provisioning is the process through which a service can be either activated or ceased based on the requirements of the business. The service can be:Pre-paid, post paid, fixed line services like broadband, IPTV, Landline etc.

Provisoning means ready to activate..

there are 5 types of ip address they are class A,B,C,D,E

Cloud computing and networking

dns query is send on port 53 not on port no 80 . at first web browser send dns query with destination address of dns and after resolving the web site address . http get query send by browser using destination as web address and after session created by web server the data exchange will happen

HI All, once a web site is entered in the address bar and enter key pressed the following process happens. 1. The system performs a check on the dns cache to check if there is any entry for the ...

No we cannot debug RSA because for creating keys random prime is used so we cannot generate again same prime number therefore we cannot debug the RSA.

1 Mbps

The DORA process in DHCP works as follows. D ----------> Discover O ----------> Offer R ----------> Request A ----------> Acknowledgement 1. DHCP automatically discovers the system 2. Server sends...

Dora= d-discover o-offer r-request a-acknowledgement ========= dhcp first discovers the computer and it then offers the computer to assign an ip address to i.then the computer request for the ip addre...

Routing protocols are used to search the best path between source and destination and Routed protocols are used to send the data from the best path chosen by the Routing protocols..

3Types of Routed Protocols:

1.IP -> Used by Microsoft
1.IP-X -> Used by novell
3.Apple Talk:-> used by Apple.

Routed Protocols Direct the Lan Segments like IP IPX & Apple Talk..Whereas routing protocols use routed protocols to make their communication possible.(Rip/igrp/IS-IS/ospf/Eigrp)are few routing protocols.

KC comment is correct.Apart from KC comment the error message that comes on the client of an AD is that Domain Controller is unavailable when Kerberos Authentication server(AD) is down.

Kerberos is a network authentication protocol which allows individuals communicating over an insecure network to authenticate to themselves in a secure manner.Kerberos makes use of the Key Distributio...

Hi,Port blocking is possible if Switch is installed in LAN,Port blocking to particular port is possible only if Switch is installed in LAN.A particular port can be blocked by configuring Switch under ...

To block the unwanted traffic within the network. It is get pretty faster network.

Hi,Classful and Classless Routing is defined as if particular ip address ex.192.168.1.1/24 this is defined as classfull routing and 192.168.1.1 without specific subnetting is defined as classless rout...

classfull routing protocols do not carry subnet mask information on their routing updates. Classless routing protocols do carry subnet mask information on their routing updates.ripv1 is a cl...

Hi,

Layer3 switches are installed and consistent to send only interested traffic to allow through the Network.Whereas Layer2 switches act as a interceptor in between layer3 switch and LAN.examples of Layer3 and Layer2 switches are Router and Switch.

L2 Switch, or L2VPN, is forwarding packets based on the MAC. In more depth, if you have 2 switches, switch#1 has been configured for 2 vlans, ports 2,3,4 for vlan111, and ports 5,6,7 for vlan222, and ...

Hi,If one host in LAN does not connect to LAN check if the 1)Domain Name is entered correctly as it is case sensitive .2)Check If Lan Card is working properly.3)Check if the cable is clamped properly....

There can be more than one reason for the host not connecting to the network. Check the following:-1. Network adapter drivers (remove the driver and reinstall)2. UTP cable from the swit...

Go to Start ->Run 
Type "ip address" or "computer name"

Go to Start ->Run 
Type "\ip address" or "\computer name"

 

This is kind of broad question......But generally it can be said as securing computer or any technical equipments (like pritners, smartphones & etc....) which is connected to the organizational ne...

If both the segments are working on same network then a bridge can be used, if they are running on a different network to have the connectivity we need to use a router.

Yes, The use of VPN is to secure connection between two private networks over the internet.