Ask Question, Ask an Expert


Ask Computer Network & Security Expert

problem 1) In this section, you will learn a couple of practical tools: route, and ifconfig, and netstat. Below is a very brief explanation of what they do.

route The route command can be used to view and manipulate IP routing table.

netstat is a tool which can be used to exhibit network connections, routing tables, interface statistics and many other things.

ifconfig The ifconfig command is used to configure a network interface and to display the status of the currently active interfaces.

(a) Run the route command. prepare down the use of the entry with netmask

(b) Assume a malicious attacker runs \route del" to delete routing entry corresponding to on one of the machines. Now you try to run \ping". Do you expect the ping to get through? Harry Bovik, the local networking guru argues that \Well, there is still a default route, so the ping should go through!" Harry's pessimistic alter ego suggests otherwise, but does not have a reason. Should Harry believe his alter ego or dismiss it as a case of unjustified pessimism? Give a brief 1-2 line answer why.

(c) Name the command to view the routing table of your machine using netstat? What is the command to only show IP addresses and not host names in the routing table?

(d) How can you use netstat to determine what the network interfaces of your machine are? What is the MTU of your Ethernet interface?

(e) Run ifconfig. What information does the field \Mask" give you?

(f) What happens if you run ifconfig and configure an interface to be in promiscuous mode?

problem 2) A forwarding table for a router in a network using CIDR is given below.

Address prex         Next hop                 A                 B                C                     D

(a) If the router receives a packet with destination, what will the next hop be?

(b) If the router recieves a packet with destination, what will the next hop be?

(c) Assume I add the entry to the routing table. Will lookups still yield a single forwarding entry? describe.

(d) What actually happens to packet which only matches

Computer Network & Security, Computer Science

  • Category:- Computer Network & Security
  • Reference No.:- M96749

Have any Question? 

Related Questions in Computer Network & Security

The project requires a significant amount of work on

The project requires a significant amount of work on research, design and implementation. It is advised that you should start the project as soon as possible. A Simple File Transfer Protocol Design and implement a simple ...

Any encryption algorithm like caesar cipher algorithmshould

Any Encryption algorithm (like caesar cipher algorithm)should be used and implemented for the information given in the document. Cryptography Assignment Given the following S-Boxes: S1= [ 15        10            2        ...

Network analysis reportassignment- a coversheet with your

Network Analysis report Assignment - A coversheet with your name and student id must be included. - All references should be appropriately cited using the Harvard style - Submit your report as one PDF file - Save your fi ...

Goals1 to understand the challenges of protocol design2 to

Goals: 1. To understand the challenges of protocol design. 2. To discover and appreciate the challenges of developing complex, real-world network applications. 3. Make sense of real-world sockets programming APIs. 4. To ...

Taskprovide short answers to the following six questions

Task Provide short answers to the following six questions. Your answers should be clear, concise and to the point. Prepare a single document (MS Word or PDF, NOT both) along with title page and submit it online using EAS ...

Describe the role and purpose of the router firewall dmz

Describe the role and purpose of the router, firewall, DMZ, IDPS, and honeypot within a network - include a specific focus on how each helps protect the network from being hacked from both inside and outside the network. ...

Term paper security regulation compliancethis assignment

Term Paper: Security Regulation Compliance This assignment consists of two sections: a written paper and a PowerPoint presentation. You must submit both sections as separate files for the completion of this assignment. L ...

Network routing and switching assignment- instructionsyou

Network Routing and Switching Assignment- Instructions You must do this assignment individually, that is, on your own. Type all your answers in the Template for Your Answers Section of this document and upload only that ...

Task - provide short answers to the following six

Task - Provide short answers to the following six questions: Question 1: Discuss the advantages and disadvantages of star, bus, and mesh physical topologies. Provide real examples of each type. Question 2: Explain why th ...

Explain briefly what is meant by lsquooptimising a

Explain briefly what is meant by ‘optimising a network'. Answer should refer to all aspects of optimisation, including resource smoothing /levelling, crashing the network, and anything else you consider relevant.

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate