Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Computer Network & Security Expert

Answer the follwoing problems.

problem 1) Elisa wishes to listen to National Public Radio news over the Internet. She starts her favourite audio player and points it to ra1.streaming.npr.org. Audio player calls gethostbyname() with given name to get IP address of the server. Therefore of the gethostbyname() call, local resolver in Elisa's machine contacts local DNS server to translate the host name into the IP address. The local DNS server performs an iterative lookup. The table below contains the DNS distributed database. A row corresponds to a DNS record. The records are grouped by DNS server.

1099_Dns distributed database.jpg

problem 2)a) In the figure below, draw arrows to indicate sequence of queries and responses exchanged among the different machines. Label each arrow with a sequence number and, if the message is a response, indicate which record(s) it contains. To make your sequence as simple as possible, suppose the server includes both the A and NS records when applicable.

b) Eliza repeats her query after two minutes. Demonstrate what happens for this subsequent query.

1229_Sequence of queries.jpg

problem 3) State true or False.

Briefly describe your answers.

i) In CCN, data packets are forwarded using longest prefix match.

ii) Nonce in a CCN interest packet is to prevent replay attacks.

iii) Compared to IP, CCN makes it more difficult to target a particular host with denial of service attack.

Computer Network & Security, Computer Science

  • Category:- Computer Network & Security
  • Reference No.:- M96708

Have any Question? 


Related Questions in Computer Network & Security

Module discussion questionpersonal factors such as anger

Module Discussion Question Personal factors, such as anger, revenge, and lack of rewards and recognition, may increase the risk of someone stealing from or spying against employees. Organizations should apply adequate se ...

Technical paper project disseminating organizational it

Technical Paper Project: Disseminating Organizational IT Security and Troubleshooting Best Practices Part 1 Write a ten to fifteen page paper in which you analyze and solve the following issues: Imagine you are a senior ...

Lab questions1 when running snort ids why might there be no

Lab Questions 1. When running Snort IDS why might there be no alerts? 2. If we only went to a few web sites, why are there so many alerts? 3. What are the advantages of logging more information to the alerts file? 4. Wha ...

Benefits of cloud-based office productivity softwarebased

Benefits of Cloud-based Office Productivity Software Based on what you have learned about using cloud-based office productivity software, create a 5-slide presentation to the department head or CEO to convince him or her ...

Assignmentinstructions1you just received a brand new

Assignment Instructions 1. You just received a brand new computer for your home environment. It comes with the latest Operating System. You also have an Internet Service Provider where you can easily use the existing net ...

Assignment elastic and inelastic trafficwrite a three to

Assignment: Elastic and Inelastic Traffic Write a three to four page paper in which you: 1. Outline a plan for the development of an addressing and naming model in an environment of the following scenario: o Ten departme ...

Assignment1 give a generic definition of what a

Assignment 1. Give a generic definition of what a protocol is (not related to the internet). (Knowledge) 2. Using the definition you just found explain how TCP and IP fit that definition. (Evaluation) 3. What is the resp ...

Short papercompare and contrast cat 6 unshielded twisted

Short Paper Compare and contrast cat. 6 unshielded twisted pair (UTP), coaxial, and single mode fiber optic cabling types. Describe one or two of the advantages and/or disadvantages associated with using each cable type ...

What is a dmz is this really a good name for the function

What is a DMZ? Is this really a good name for the function that this type of subnet performs? What is RADIUS? What advantage does it have over TACACS? How does a network-based IDPS differ from a host-based IDPS? What is ...

Q1 the rijndael algorithm was chosen for the advanced

Q1: The Rijndael algorithm was chosen for the Advanced Encryption Standard (AES). Using either the attached tutorial, or your own sources of information, pick one (or more) steps of the algorithm and explain it in some d ...

  • 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

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro