NET 413 Homework #1 Due Sunday, 09/20 by 11:59 pm 100 points total Submit your answers to the following questions on D2L in PDF format. You must include your name at the beginning of your answer file...

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NET 413 Homework #1 Due Sunday, 09/20 by 11:59 pm 100 points total Submit your answers to the following questions on D2L in PDF format. You must include your name at the beginning of your answer file (2 point penalty for no name in answer file). 1. You will use the free “Wireshark” tool to analyze data packets. You can download and install Wireshark on your computer (you do not need to install the WinPCAP (packet capture) portion). You can also use Wireshark on the CDM Student terminal server (see Lab Resources). · Download the file “HW1-trace.pcap” from D2L, open it with Wireshark. · You will see the 14 packets captured when I sat at my Office Computer, opened a browser and typed http://facweb.cdm.depaul.edu/brewster/list.htm in the address line, which displayed a web page (you can try it). Here is the network diagram: a) (5 points) Why does my Office Computer send packet #1? What device responds by sending back packet #2? What information does my Office Computer learn from packet #2? b) (5 points) Why does my Office Computer send packet #3? What device responds by sending back packet #4? What information does my Office Computer learn from packet #4? c) (5 points) For Packet #8, name the protocols used at Data Link, Network, Transport and Application Layers in this packet. d) (10 points) What are the following address values? Specify the actual numerical values from the trace file. i) The Ethernet (MAC) address of my Office Workstation ii) The IP address of the DNS server iii) The private TCP port number associated with my browser window e) (5 points) Which 3 packets are the “TCP 3-way handshake”? f) (5 points) Which packets (#1-#14) actually contain the contents of the web page I am downloading? Your answer should include more than one packet. g) (10 points) Which packets contain names from the list.htm file ? Note: It is NOT Packet #13, even though Wireshark displays the whole file sent in the “Reassembled TCP” tab of that packet. Use only use the “Frame” tabs. h) (5 points) What is the purpose of packet #11? What device sends it? Why is it sent? 2. Consider the routing table and ARP table below from a Cisco router. This router has two Ethernet interfaces: Ethernet0/0 and Ethernet0/1. a) (10 points) Assume that this router receives a packet with destination IP address 192.168.1.18 i) Which interface (Ethernet0/0 or Ethernet0/1) will this packet will be sent out? ii) What is the value of the Ethernet (MAC) destination address in the packet that is sent out? (specify numerical value in hexadecimal, not just a description) b) (5 points) Assume that this router receives a packet with destination IP address 192.168.11.42 i) Which interface (Ethernet0/0 or Ethernet0/1) will this packet will be sent out? ii) What is the value of the Ethernet (MAC) destination address in the packet that is sent out? (specify numerical value in hexadecimal, not just a description) 3. (15 points) Consider a router that has the following Routing Table contents. Note that “0.0.0.0/0” is the notation for the “default route”. Destination Subnet Outgoing Interface Next Hop 50.62.8.0/22 Fa0/0 118.2.77.4 24.19.66.80/28 Fa0/1 59.16.1.1 0.0.0.0/0 Fa0/2 18.12.52.43 a) A packet with destination IP address 50.62.8.249 arrives to this router. Out what interface will this packet be sent? b) A packet with destination IP address 50.62.11.199 arrives to this router. Out what interface will this packet be sent? c) A packet with destination IP address 24.19.66.99 arrives to this router. Out what interface will this packet be sent? 4. (5 points) My IP address is 177.39.52.18 and my subnet mask is 255.255.255.248. What are the first and last assignable IP addresses in my subnet? 5. (5 points) My IP address is 177.39.52.18 and my subnet mask is 255.255.248.0. What are the first and last assignable IP addresses in my subnet? 6. (10 points) Company A has been allocated the Class B address block 188.253.0.0/16. Internally, they want to break this address block into 32 subnets of equal size. a) What Subnet Mask should they use on internal devices to achieve this? b) Out of these 32 subnets, list the Subnet ID of any 2 subnets and the first and last valid host address in each of these 2 subnets. NET 413 HW #11 IP RouterMy Office ComputerEthernetSwitchIP 140.192.38.7Default GatewayIP 140.192.38.1DePaul NetworkFacweb.cs.depaul.eduIP 140.192.36.128