Computer Network Questions and Answers June 25, 2018

How do the following relate to Information security auditing and what do they mean in that context 1. Standards 2. Polices 3. Procedures 4. Guidelines 5. Framework 6. Internal controls 7. Processes 8. Regulatory 9. Practices 10. Compliance

1.Effective and efficient communication can be hampered by not providing enough information and potentially providing too much information. How can having too little information create issues with project completion? How can having too much information also create issues? Give an example of each (if possible, from your own personal experience).

1. Research and describe another cyber security threat. What methods would you employ to protect against it? 2. Describe which configuration or process you consider being a cornerstone of layer 2 security. Why is it more important than others?

30 of the 51 students taking a science course last semester lived nearby, and 23 of them had financial aid. Answers to reports are precise to four decimal places. What is the likelihood that, if two students were randomly chosen from the class, one after the other without replacement, the second one would reside nearby the first one did both

What does it mean when building a linear regression model when you add a control variable and the coefficient for the independent variable of interest which was significant in the bivariate analysis becomes insignificant, but the size of the coefficient doesnt change

In your evaluation, how impactful do you find kafka paper You can check out different external information for example, how many other papers cited this paper, whether the design choices mentioned in the paper are used in other workprojects, and whether there is any software suite (maybe open source) developed based on this paper that people use

Write the following programs in Verilog, run them, and please print the output screen. In case you are using any online resources for this submission, you are free to do so. However, you should have accompanied comment statement for each line of code. The comment statements must explain the purpose of that code. 1. 4X1 Multiplexer 2. Full adder 3.

A company has a network address of 192.1681.64 with a subnet mask of 255.255.255 192. The company wants to create two subnetworks that would contain 10 hosts and 18 hosts respectively. Which two networks would achieve that? Explain.

Assume that host A has three segments to send to host B. The size of the segments is listed here Segment 1 250 bytes, Segment 2 120 bytes, and Segment 3 450 bytes. If Segment 1 is given the sequence number 110. Draw a sequence diagram showing the transfer of the three segments from host A to host B assuming that these three segments are

Using Matlab, provide full code for creating reed solomon codewords for values t14 15 116 4 156 4 45 67 4 89 9 12 21 2 you must use rsgenpoly, rseng, gf functions in order to complete the task.

a) What is a protocol graph? b) Explain the role of packet encapsulation in a layered network architecture.

Question 3 (20 marks) Consider the following school choice problem with five students 1, 2, 3, 4, 5 and five schools a, b, c, d, and e with each school having exactly one seat. The preferences of the students are as follows from left to right in decreasing order of preference. 1 e,b,a,c,d 2 b,a,c,d,e 3 a,b,c,d,e 4 a,b,c,d,e 5d,b,c,a,e,The

Rate Limiting using Kali (a) i like to see iptables rules involving -m limit to allow only 8 TCP connection attempts per minute to ports 80 or 443. Then, from another host to send 20 SYNs per minute to these ports. A small script may be required to achieve this. i'll like to see this iptables rule(s) in such a way that the extra packets are logged

Classify the follwing paragraph in green according to the rules of domain modeling. 1. Identify the domainspecific concepts by underlining or marking the phrases. 2. Apply Classification rules to classify the domains and use classification codes to indicate them. 3. Provide a list that shows classes and their attributes and the relationship

Write a program to input two arrays and add both of them. The user will keep on taking input until it presses . The size of both the arrays can vary. In case of different size, just pad the smaller array with zeroes. You need to create a function for vector addition, and you are not allowed to use any dynamic memory allocation in this task.

How do the principals of Redundant Links, Link Aggregation, and Scalable Routing Protocols contribute to the Resilience and the Scalability of Networks? Explain.

3. When considering a server restore, what is the difference between a system state recovery and a bare metal recovery

1. How do clients normally receive updates for their software if you do not have a WSUS server and what are the disadvantages of that this method poses to your network

Briefly describe the type/goal of the attack that you are launching; 2. Describe the scenario that you encounter as it pertains to time stamps; 3. Describe your approach to obfuscating your attack's tracks; and 4. Describe the impact (from the obfuscation, not the attack) that you hope to achieve. 5. Assess any weak points in your approach to

a) What is the packet size expressed in bytes if its transmission latency on a 10 Mbps link is 1200 ?s. b) The first bit of a 50 MB message is sent on a channel at time 1:23:45.0000000 PM and the last bit is sent at 1:23:49.194304 PM. What is the data rate expressed in Mbps ? c) What is the band width delay product (in one direction) expressed in

What are some trends that we are likely to see in the future that will partner technology and government/policy? Based on what you learned from the sources provided, what impact has social media had on government, politics, and activism? Where has social media had a positive impact? Where has it had a negative impact? Discussion: Future trends and

In general, what is virtualization? What are it's benefits? Pick a topic on virtualization and describe it in more detail using outside source.

Intrusion detection system is considered a second line of defense after intrusion prevention system. Finding normal patterns help to detect abnormal behaviors. Provide an example of normal patterns that help you to identify abnormal behaviors (e.g. daily work routine, school activities, community activities, etc.) and discuss how you establish

1a. What is a VLAN? 1b. What are the advantages of using VLANs in a network (list and explain two). 1c. What criteria could you use on the final project to plan your VLANs and assign users appropriately? List 5 useful questions and accompanying information gained that can be used by talking to existing personnel on the current network being

A conference call between two user agents, 1 and 2, belonging to two different ISPs each using SIP must be established. After a while, user agent 3, belonging to a third ISP using SIP, is invited by user agent 2 and successfully joins the media exchange session. Ignoring the registration process, give a timing diagram for the exchange of messages

When would you choose to use containers in Windows and when would you choose to use containers in Linux? How are they different? How are they similar?

A radio link to a geostationary satellite is 36000 km long and runs at 1.5 Mbps. The signal propagation speed is 300000 km/s. What is the total time in seconds between starting the transmission of the first bit of a 50 KB message and the reception of the last bit ? Write the exact answer, with no approximations, along with all calculations.

(a) What does the "count to infinity" problem mean? (b) Name a routing protocol that has this issue and explain why it happens within this protocol? You can provide an example. (c) Provide a solution for this problem. (10pts)

(a) What is a datagram network? How does it work? (b) What is a virtual circuit network? (c) provide two differences between these two types of networks. (10pts)

How does "system preferences" compare to Windows "SYSTEM" or Control Panel? How does "Users and Groups" in System Preferences compare to creating user accounts in a Windows client? What does Spotlight do? What is the dock? How do you remove an application from the dock? Is the dock resizable? The finder. What does the finder do? How does it

a)Propose a mechanism that allows one host to open (reserve) a virtual circuit with a guaranteed end-to-end average throughput and a maximum delay provided the host does not exceed a certain data rate limit when sending packets. Consider the resources required at each switch and change accordingly the virtual circuit setup protocol discussed in

B3 A B1 B2 B4 D

Statically assign addresses to routers and to routing tables, servers, and PCs as shown in the diagram. On the Main Campus, change the name of the home page of the Honey Pot web server to "Honey Pot". In the Web Server (172.16.0.254). The public network address for the company is 129.137.18.0/28. Test that each device can ping every link on its

Switch0 129.137.18.128 Remote Site 192.168.20.1 Lab 1 NAT 129.137.18.1428 Main Campus 172.16.0.1 Switch1 Honey Pot 172.16.0.253 Web Server 172.16.0.254 192.168.20.50 172.16.0.100

Consider data center network (DCN) architecture designs. What is the difference between 3-Tier DCN and a fat tree DCN? Which type is more costly to implement?

What is the differrence between a logical network diagram and physical network diagram? How can they help to manage a network?

Question 2 (20 marks) Consider a resource allocation setting in which n agents have positive additive utilities over mn indivisible items. Prove or disprove the following statements. The allocation that maximizes utilitarian welfare is Pareto optimal. If an allocation is Pareto optimal, it is envyfree. If n 2, envyfreeness and proportionality are

5. Use FTP to download SocialMediaSecurityPolicy to the CEO PC. 6. Document the OS version and IP configuration of the CEO PC. 7. Create a new user account on the web server. 8. Document the OS versions and IP configurations of the web and DNS servers. 9. Use nmap on Kali Linux to perform port scans on the DNS and Web servers. Document the oper

There are now video cards that cost over $500, more than the cost of a common desktop computer. Research and find some of the popular video cards in the computer gaming world. Why are these video cards so popular? What are the features on these cards that apply to the computer gaming world? Would somebody who is not into computer gaming benefit

Research on the Internet to find some Serial devices that are still commonly used today. They should use a DB9 or DB25 connector. If you are able to find some, why do you think those devices are still in use? Are there alternatives that are using USB or FireWire?

For the greatest security, should a Wireless LAN Access Point be put into Passive Discover Mode or Active Discover Mode? Why?

Discuss the type of infrastructure that needs to be in place. Determine what methods of transmitting data packets should be used. Select and justify the types of switching that should be used (e.g., packet, circuit, message, cell relay, frame relay, ATM, other) Determine whether or not technologies like FDDI, SONET, SD-WAN, SMDS, or other options

Suppose the actual subnet for the previous question is 192.168.7.32. Answer the following: What is the (sub)network number?

What is the bandwidth necessary to transmit an uncompressed video stream with Full HD resolution (1,920 x 1,080 pixels) with 3 bytes per pixel and 60 frames per second? Express the answer in Mbps and write the exact answer, along with all calculations to reach it.

1. What are the similarities and differences between flow control and congestion control in computer networks? 2. Why do we need IPv6? How can we do transition from IPV4 to IPV6?

Here is a video to get you started: https://drive.google.com/file/d/1MzvYcuTLR5ItXTbve9l6kOWl7mE180N9/view?usp=sharing Download the pcap file http://www.eecis.udel.edu/~bohacek/TCP1.pcap Scroll down to packet number 1700. Right click and select follow TCP stream. The questions below are about this TCP connection: This TCP connection is a file

Exercise 1.3.3 1. A trunk system has a buffer size of B and a trunk bitrate of P. Fill in the dots (1) there is no loss if the input is (.,.) constrained (2) the output is (.,.) constrained. 2. A (P, B) constrained flow is fed into an infinite buffer served at a rate of c. What is the maximum delay

There was a time when you had to go to the library to research information or a topic. Now, most everyone has access to information via some type of device. How has the internet benefited businesses? How has it benefited individuals? Do you think, in your lifetime, access to the internet will be established as a right and everyone will have FREE

a) What are some advantages of abstraction and a layered architecture for network design? b) Explain the differences between the service interface and the peer-to-peer interface of a protocol.

Explain the conditions leading to a routing loop in a network and what is the mechanism to prevent routing loops happening. Include examples with your answers.

What is the value of expert judgement and when is it appropriate for project risk management?

Explain how at least three (3) different examples from the humanities disciplines reflect your cultural identity. For instance, a work of literature could be anything from a book you loved as a child to a poem that speaks to you now. Include documented research about the work you have chosen. At least two (2) of your chosen examples must include a

How is logging and monitoring administered in ubuntu (Linux) ? What is the location of specific linux log files?

How do you give a regular user account administrative privileges on the domain or on a member server? Explain.

An IP packet will be sent to the destination IP address 192.168.8.15. What is the content in binary in the Destination IP address field of the IP packet?

You been working as a lab technician for the Baker College IT Department. This department has 8 classrooms, including a dedicated Cisco classroom. All of the computers in each classroom are connected to a switch located in the back of the classroom. Those switches are connected to a switch in the server room, which is connected to the cable modem

Assume in Kenya at a GDP of 160 billion, Aggregate Expenditure (AE) is 80 Billion. At a GDP of 350 billion, AE is 320 Billion. What is autonomous consumption At what positive value for GDP, will AE equal GDP (if any)

Discuss the advantages and disadvantages of different Wi-Fi security techniques.

1. What is the scope of the teaching case? (2 marks) 2. What is an LMS? (2 marks) 3. What vendors and software were recommended? (2 marks) 4. List and differentiate the four acquisition options for an LMS. (4 marks) 5. As a project analyst, recommend a viable solution based on SolBridge's current dilemma. (4 marks

The mathematical derivative is fundamental for optimizing machine learning algorithms. In deep learning, backpropagation gradient descent is widely used for training feedforward neural networks. Explain how derivative is applied in backpropagation gradient descent to optimize neural networks.

In a scientific study, a population of 100 cats that were vaccinated against rabies were taken. Of the cats vaccinated in the scientific study, 5 acquired the disease. Suppose a pet store has 15 cats vaccinated against rabies. A customer goes to the store and buys 3 cats. Define the random variable X as the number of cats purchased by the customer

a) Explain what is meant by a network capacity and how this is related to a network's bandwidth. (3mks) b) An application layer protocol typically defines four things. What are these four things? Explain (8mks) c) P2P is an application for sharing files. P2P can have a centralized directory of what files are available and where they are accessible

Imagine yourself as an educator in a Head Start program. Your director wants you to deliver a proposal to the board of directors about a new type of learning software. This is scenario I selected. Applying Social Competence: i need help with these questions Describe the social competence required for this task. Explain what you should

You have been tasked with presenting a defense strategy to protect the organization's network from internet-based threats. what type of device is at the top of your list as the first line of defense for the network?

Explain server- and client-side attacks.

The company CELUTV, dedicated to the distribution of IPTV, offering various live channels and demand, it has to improve its perception before the final client, due to the fact that they have recently received suggestions and complaints, in relation to the service they provide. In this regard, users indicate that the service has a delay, there is

What is the relationship between "directory traversal" and "command injection"? What is SQL injection?

Successful businesses use promotion software in order to generate interest, then determine interest or lack thereof. There are many types of promotional software that exist. How productive would a company be if they could not view or understand the results from their promotional software but they could use the other features with no problem? For

Virtual Private Networks (VPNs) have been around for many years, but recently they have been marketed to home users as an added piece of security for your computer. In reality, what they do isn't quite so simple. For a home user, using a VPN to surf the web will provide privacy that hides your web activity from your Internet Service Provider

Calculating Free Space Path Loss Assumptions: 1. The RF signal is propagating in air (use calculators available online). 2. You are calculating figures for the deployment of an outdoor Wi-Fi network for an open-air shopping area that covers about 150 metres (330 feet) of a city street in a straight line. 3. The receivers have antennas with 5 dBi

What is the difference between a message, segment, datagram, and frame? Research and describe briefly using your own words an open internet protocol. You can mention one of the protocols we mentioned in the slides or research a new one. Display keyboard shortcuts for Rich Content Editor

What are the advantage and Disadvantages of using Microsoft Azure.

What are the advantage and Disadvantages of using Amazon AWS.

What parallels can you draw between a Link Local Address and an APIPA address? Explain.

What is the difference between HTML and XML, how can attackers make use of XML to attack a server?

An IT company and a Finance company are combined to form a merged company. You are tasked to: 1. Explain the threat and vulnerability related to the network merger. Remember these should be related to the network, a vulnerability is a weakness and a threat takes advantage of a vulnerability. 2. How you would manage and/or mitigate your threats and

Discuss the firm's vulnerabilities and why they failed in maintaining the essential safeguards in computer and network security. Then determine which 3 aspects of the McCumber Cube were neglected.

Differentiate between Organizational Units (OUs) and Groups in Active Directory? What are the benefits of using Organizational Units (OUs) in AD? Discuss the types of Active Directory Groups?

Which network topology is the most reliable (in terms of fault tolerance) but is also the most expensive? Give one advantage and one disadvantage of the star topology

What are 3 of your goals as a Cyber Professional? What is the hardest technical problem you have solved?

3. We wish to design a ROM latch state machine using the Logisim hardware shown Clock D Q eno A 000000000 sel The bus lines are three bits (except for the final input to the seven segment display). How big is the ROM Find the contents of the ROM for both an upcounter and a downcounter. (Both counters are three bits.)

What package management system does Ubuntu (Linux) use? How do you install software in Ubuntu? How do you automate updates in Ubuntu? How can Windows applications be installed and used in Ubuntu?

Compare Ubuntu (Linux) with CentOS (Linux) and Kali (Linux)? What are the key differences between these Linux distros? In what terms is Ubuntu better than CentOS and Kali?

Map the layers of the TCP/IP model to the OSI model Each layer of OSI has a body/group that is responsible for the standards, please name them Describe the progression through the OSI model of the following: A web browser request and connection to www.cnn.com An email being sent from Outlook on a Windows machine from your APUS email account to

How do you compare the FSPL of the three frequencies (900 MHz, 2.4 GHz, and 5.8 GHz)?

Explain how Windows container networking works in Windows Server operating system Be specific with examples.

Explain when is the subnet mask displayed with the parent route and when is the subnet mask displays with the child route and not the parent route? Elaborate your answer with examples.

Explain the different BGP messages (List 4) and elaborate what they are used for?

1. When you are joining a server or client workstation to the domain, what is the purpose of supplying the Domain Administrator's username and password to complete the process? 2. Why would a company choose to use Organizational Units? Do OUs have to be used in a domain? 3. List and describe 2 different ways to perform the Initial configuration of

Summarize the following networks step-by-step into one route entry for the routing table? 192.168.68.0/24 192.168.96.0/24 192.168.80.0/24

Explain classful and classless routing behaviour in a routed network? Elaborate your answer with an example for each routing behaviour.

1. What does a networked computer system consist of? Explain each of its elements.

Provide some of your thoughts to each of following questions: 1. Explain the need for IPv6 addressing. 2. Explain how IPv6 addresses are represented. 3. Compare types of IPv6 network addresses.

Explain the term "drive-by download". How can attackers perform the attack? Explain how attackers can make use of HTTP header of the "referrer" field.

1. What happened to the data after the disk is formatted? 2. In Linux, what do you use to view the processes? 3. What directory service protocol is used by AD and also supported by Linux? What method does the CPU use to divide its computing cycles between more than one process? 12. What option would you use to configure your network adapter using

Can Windows Server 2012 be 32bits and 64bits? 5. What is special about Virtualization? 6. How can you start a Task Manager in Windows? 7. What is a process file? 8. List all the storage solutions? 9. What is the difference between client OS and server OS? 10. Can a user terminate a process that is hogging all the CPU?

What is transitive access? Can you prevent transitive access from occurring? How?

Explain why it is important to open Wireshark with the Promiscuous Mode turned off. Explain what you see when you open Wireshark? What sort of protocols can you see? Is it easy to understand what you see? How can you follow a stream? Can you filter to view packets only from specific sources or destinations? Should this software be freely available

6. Configure link-local addresses dynamically. 7. Identify IPv6 addresses. 8. Implement a subnetted IPv6 addressing scheme. 9. Explain how ICMP is used to test network connectivity. 10. Use ping and traceroute utilities to test network connectivity.

What is the difference between "Man-in-the-middle" attack and "replay" attack? Explain a. ARP poisoning b. DNS poisoning

(a) Explain how flooding protocol works? (b) name two methods that are used to reduce the number of redundant packets generated by the flooding routing algorithm and explain how those methods help with the redundancy issues. (5pts)

Explain how to Configure static global unicast and link-local IPv6 network addresses. Explain how to configure global unicast addresses dynamically.