TCP / IP NETWORKING - 2

    TCP / IP NETWORKING INTERVIEW QUESTIONS AND ANSWERS

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11..What  you mean by  IP Filtering?             

IP filtering is simply a mechanism that decides which types of IP packets will be processed normally and which will be dropped or rejected.

12..What is iSCSI?

The iSCSI target is a software that makes disk space available on a network. This service shares disks rather than filesystems and establishes a Storage Area Network

13..What is the use of netstat command?

netstat is a useful tool for checking your network configuration and activity

14..What is Point-to-Point Protocol?

Point-to-point protocol (PPP) is a protocol used to send datagrams across a serial connection.

15..What is pap-secrets?

The PAP secrets file is very similar to CHAP’s. The first two fields always contain a username and a server name; the third holds the PAP secret. When the remote host sends its authentication information, pppd uses the entry that has a server field equal to the local hostname, and a user field equal to the username sent in the request.

16..What Is IP Filtering?

IP filtering is simply a mechanism that decides which types of IP packets will be processed normally and which will be dropped or rejected. By dropped we mean that the packet is deleted and completely ignored, as if it had never been received. By rejected we mean that the firewall sends an ICMP response to the sender indicating a reason why the packet was rejected

17..What is Port trunking?

This means combining several switch ports to create a fatter pipeline. You can connect a switch to a switch, or a switch to a server if it has a NIC that supports link aggregation.       

18..What is Transmission?

Transmission  is the term used for frames that leave the system, either because they were sent by the system or because they are being forwarded

19..How to send the  duplex / half duplex  to the network card?

Under Linux use mii-tool or ethtool package which allows a Linux sys admin to modify/change and view the negotiated speed of network interface card 

20..How to configure  the multiple ip address?

The concept of creating or configuring multiple IP addresses on a single network interface is called IP aliasing. IP aliasing is very useful for setting up multiple virtual sites on Apache using one single network interface with different IP addresses on a single subnet network.