CIS230_3

Cloud Computing:

Design your own network Requirements: 1 Routers Configured with basic configuration 1 Switches Configured with Vlan10, within this switch 5 PC is connected (172.168.20.0/28) 1 Switches Configured with Vlan200, within this switch 2 PC is connected (192.168.50.0/29) PC from VLAN 10 should be able to Connect to PC in VLAN 200 and vice versa Both Router and Switch should have these properties. Name R1[Your Initial], S1[Your Initial], S2[Your Initial] Banner [Put your name] Passwords use this as a password to all CPENET2EXAM You can decide for other Ip addresses and VLAN Needed All configurations should be documented

More administrator knowledge is required for configuration, verification, and troubleshooting when we are using the Dynamic Routing True False Static routes Disadvantages is consuming less bandwidth than dynamic routing protocols. No CPU cycle is used to calculate and communicate routes True False Static routes are advertised through the network, which increases security True False

One of the following is consider an advantage of static routing. No intervention is required to maintain changing route information Configuration of static route is error-free O The path a static route uses to send data is known Static routes scale well as the network grows

assume that T = a

Figure 1: Traffic Engineering with Open Flow Figure 1 reveals a network where the traffic flowing from the first host which is attached to router u to the server which is attached to router z needs to be routed along the path u.v.w.z while the traffic flowing from the second host attached to router x router to the server which is attached to router z needs to be routed along the path x.w.y.z. Please describe the local flow table of each of the switches uvxw.y,z (in terms of match and action rules) to enable the routing of the two traffic flows according to the constraints described above. The following IP addresses will be used for the two hosts and the server. • The first host belongs to the subnetwork 10.1.0.0/16. It is attached to router U and has an IP address of 10.1.0.1 • The second host belongs to subnetwork 10.5.0.0/16. It is attached to router X and has an IP address of 10.5.0.1 match IP Src = 10.3.*.* IP Dst = 10.2.*.* The server belongs to the subnetwork 10.11.0.0/16. It is…

sWin an international IT solutions company, is launching 11 new branches in a new country where they currently have no existing branches.  The sWin CIO has asked that each subnet should host at least 2000 devices. sWin has obtained a network address of 10.11.0.0/17.This address needs to be subnetted further and the CIO has decided that the internal subnet mask will be /21 The company’s subnet plan allows for: Router Pool: 2 router interfaces for each subnet – the last 2 IP addresses from each subnet. Managed Network Device Pool: The first 64 IP addresses are reserved for switches and other network devices Server Pool: The first 64 IP addresses following the Managed Network Device Pool are reserved for servers. Workstation Static Pool: The first 16 IP addresses following the Server Pool are reserved for Workstations that require static IP addresses. Workstation DHCP Pool: The remaining IP addresses are reserved for automatic IP configuration. You have been asked to use subnet 10 for…

Task 2: Access Control Lists You will need to work out which interface on which router this needs to be applied to. Each ACL must work and be seen to work.  Stop any IP address from 10.0.0.128 to 10.0.0.191 from pinging 123.123.123.123 - yet allow all other addresses   Creating an ACL that meets the above 'selected' criteria Proving that a change of IP address, other than those allocated to the PC's also demonstrates the operation of the ACL. Also prove that you are still able to ping to 99.0.0.2 irrespective of device IP address

Task 1: Subnetting a Class A Address:  The network ID of the Class A address is 37.0.0.0.  You need to subnet this network into for subnets using the shorthand method

Computer Science Scenario A Company ABC needs to build a simple network in new branch office with the following characteristics: 2 workstations 1 switch 1 server IP address 192.168.1.1 until 192.168.1.3 Draw a network design for this network using all information in Scenario A above. All the devices must be labeled and assign the suitable IP address for the respective device. (You are NOT required to use packet tracer)         The email communication is done via three protocols in general. Explain in detail the THREE (3) protocols.

Cisco Router A Network with id: 192.168.0.0 and subnet mask 255.255.0.0 is given to you to split it in such a way that the following classrooms are given adequate number of IPs based on their needs. Each classroom will occupy its own subnet. The following information for each subnet must be included: Subnet ID CIDR Subnet Mask First IP usable in the subnet Last IP usable in the subnet Broadcast IP Address for the subnet     Classroom1: 8 PCsClassroom2: 400PC and 4 PrinterClassroom 3: 2 PCsClassroom4: 62 PCs and a ServerClassroom5: 24PCs

One of the Dynamic Routing Advantages is Router resources are used (CPU cycles, memory, and link bandwidth) O True False There are some of Disadvantages of Dynamic Routing one of them Protocols automatically react to the topology changes True O False

11. Are these system specifications consistent? "The router can send packets to the edge system only if it supports the new address space. For the router to support the new ad- dress space it is necessary that the latest software release be installed. The router can send packets to the edge sys- tem if the latest software release is installed. The router does not support the new address space."

Subnets used: For the LAN addresses, you must use the classful network space 192.168.13.0. Use the VLSM design guidelines to subnet that classful network between R1, R2, and R3 based on the following requirements: R1 needs to support 29 hosts R2 needs to support 56 hosts R3 needs to support 11 hosts

Q1: Based on the information in the graphic shown, design a network addressing scheme that will supply the minimum number of hosts per subnet, and allow enough extra subnets and hosts for 70% growth in all areas without using VLSM. Circle each subnet on the graphic and answer the questions below. Ft. Worth 1000 Hosts Address class Custom subnet mask Router S 0/0/1 F 0/0 RE Router D Minimum number of subnets needed Extra subnets required for 70% growth + (Round up to the next whole number) Total number of subnets needed = IP address 112.0.0.0 S 0/0/0 S 0/0/1/ F0/0 $ 0/0/0 $0/0/1 Number of host addresses in the largest subnet group Number of addresses needed for 70% growth in the largest subnet + (Round up to the next whole number) Total number of address needed for the largest subnet = Start with the first subnet and arrange your F0/1 sub-networks from the largest group to the smallest : Subnet 1: IP address range for Dallas Subnet 2: IP address range for Ft. Worth Subnet 3: IP address…

19. ARP is used for: O packet path determination O finding of a mapping IPV6 → MAC address O finding of a mapping IPV4 → MAC address O finding of a mapping IPV4 → TCP address

CSMA/CA(carrier sense multiple access/collision avoidance) is the mechanism for random access control for wireless LAN (IEE 802.11) instead of CSMA/CD(carrier sense multiple access/collision detect) , give 3 reasons why CSMA/CD is not used by IEE 802.11

77.

Computer Science Reference Network Diagram Use the reference network diagram below to answer the following questions. Private Network Public Internet Firewall Y Switch Router Firewall X Gaming Website www.game.com Web Server Email Server VPN Server Semi-Private Network (Consider the reference network diagram above) Assuming the private network is created using private IP addressing, which of these could be valid network addresses for the private network? Select all which apply. O 172.25.25.0/24 O 100.10.1.0/16 O 192.168.0.128/25 O 160.10.0.0/24 (Consider the reference network diagram above) Suppose Host-C just got connected to the private network. How can Host-C be assigned an IP address to become a part of the private network? Select all which apply. O The host cannot obtain an IP address after the network is set up and is operational. O The IP address of the host can be assigned as a static configuration. O A DNS server can assign a dynamic IP address for the host. O A DHCP server…

Task 1: Subnetting a Class B Address:  The network ID of the Class B address is 139.45.0.0.  You need to subnet this network into eight subnets using the shorthand method

TRUE/FALSE    6. A work group VLAN may be constructed only if the individuals' workstations are physically located on the same floor in a building. 7. Subnetting allows a network to be divided into smaller units by using the network default masks. 8. Masking process to create/identify subnets is not necessary if classless addressing is used. 9. IPv4 provides 32 bits of addressing but IPv6 provides 128 bits of addressing. 10. Network management is a set of functions to control, plan, allocate, deploy, coordinate, and monitor network resources.

A=32, B=33, C=34, D=35 x1, y1, z1 are the interfaces for the router gateway, while x2, x3, y2, y3, z2, z3 are for the router interface Find the Routing Table R1, R2, and R3 using the following table! Destination Next Hop Interface       With the Routing Table that you have specified in point a, which path will PC1B take when communicating with PC2B and PC3B In theory there is a routing table for Network Address 0.0.0.0 with a Subnet Mask of 0.0.0.0, explain the function of this routing table? Does the image network require routing at point c? Why?

Lab – Routing   Objective   Learn and practice routing using Node and Express.   Specification   Create a web server that Accepts and processes request messages submitted from browser, and Generates and sends response messages back to browser for display.   Your web server must be able to handle URL with hostname and port Request message URL: 0.0.1:3000 Response message: “SUCCESS!” URL with hostname, port and path echo Request message URL: 0.0.1:3000/echo Response message: “SUCCESS! echo” URL with hostname, port, path foxtrot and route parameter value kilo Request message URL: 0.0.1:3000/foxtrot/kilo Response message: “SUCCESS! Received kilo via foxtrot” where the value kilo must be retrieved via the route parameter Invalid/unexpected URL Request message URL: 0.0.1:3000/<any other value> Response message: “FAILED! Fix your URL.”   Hostname 127.0.0.1 can be replaced by localhost.   Port number 3000 can be replaced by any other port number that is from 1024 (2^11)…

Availability is the capacity of network to take change in size and load. A) True B) False

Question 3 : An educational institution has an access network whose operating parameters are as follows: ▪ access link to originating servers' rate: 15.4 Mbps RTT from institutional router to server: 2 sec ▪ ▪ ▪ . 3.1. You are requested to provide the performance of the institutional access network in terms of • LAN utilization * • Web object size: 100K bits Average request rate from browsers to origin servers: 150/sec average data rate to browsers: 45.0 Mbps Institutional access network speed: 1Gbps. Note: Assume that the requests from the web client to the originating web servers are of the order of 2GB of data on average. 3.2. Access link utilization End-to-end delay from the access network to the origin servers. Assuming that the institution would like to install a web cache in its access network with a cache hit rate is 0.65, you are asked to recompute the new performance of the access network in terms of: 3.2.1. 3.2.2. 3.2.3. LAN utilization Access link utilization End-to-end…

Use this figure as a reference, if the values ​​are A, B, C and D (3rd octet) with the following conditions:• Value A = 37• Value B = 38• Value C = 39• Value D = 40X1, y1, z1 are the interfaces for the router gateway, while x2, x3, y2, y3, z2, z3 are for the router interface a. Find the Routing Table R1, R2, and R3 using the following table! Destination Next hop Interface

Assignment 5: Both TCP and UDP are widely used IP transfer layer protocols. For applications requiring reliable transfers, TCP is generally preferred, while applications that value throughput more than reliability are best served using UDP. Most TCP/IP stacks provide both protocols, so the application can use whichever transfer protocol is more appropriate, even changing from one to the other as desired. Rather than rely solely on TCP, the network system developer might want to investigate the trade-offs related to use of UDP. Based upon the analysis list out why Some TCP/IP Applications Use UDP?