Chapter 10

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4. Subinterface G0/1.10 on R1 must be configured as the default gateway for the VLAN 10 192.168.10.0/24 network. Which two commands should be configured on the subinterface to enable inter-VLAN routing for VLAN 10?* 5. In the Cisco layer 3 (multilayer) switch (S1), which command is used to change a layer 2 interface to layer 3 and which command is used to enable IPV4 routing ?-

Suppose nodes A, B, and C each attach to the same broadcast LAN (through their adapters). If A sends thousands of IP datagrams to B with each encapsulating frame addressed to the MAC address of B, will C's adapter process these frames? If so, will C's adapter pass the IP datagrams in these frames to the network layer C? How would your answers change if A sends frames with the MAC broadcast address?

Answer the following questions based on Layer 3 VLAN Write the steps to configure VLAN in Layer 3 How many VLANs are there in the above topology diagram Identify the trunk link in the above topology diagram How many sub-interfaces to be created in Router 0 Do we need any Routing Protocol or Static Route to be configured to communicate from PC0 to PC1?

Answer the following questions based on Layer 3 Vlan Configuration. a) Write the steps to configure VLAN in Layer 3 Switches. b) How many VLANs are there in the above topology diagram c) Identify the trunk link in the above topology diagram How many sub-interfaces to be created in Router 0 d) Do we need any Routing Protocol or Static Route to be configured to communicate from PC0 to PC1?

1. The most common architectures for LANs are the 2. The information in an Ethernet network is exchanged in a packet format. The packet provides grouping of the information for transmission that includes ➖➖➖➖➖➖➖ ‒‒‒‒‒‒‒. 3. In a bus topology, all LAN data traffic is carried over a common--------- 4. The maximum Ethernet frame length is---- --command to enables the MAC addresses 5. In the command prompt, enter the information to be displayed. ---receives the message. Bob's mail 6. At Bob's mail server, the server side of server then places the message in Bob's mailbox.

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Question 2: Answer the questions regarding the given topology. Router A and Router B have 50 PCs and 20 PCs connected to them, respectively. The IP address space given to you is 192.168.10.0/25. 1841 Royter A 1841 Router wtch PC-PT PC PCPT PC PT PC2 PC-PT PCS PC1 s0 PCs 20 PCs I. Write Subnet Mask, Network ID, Broadcast ID and host address range for Router A Subnet. You must clearly explain all the steps involved otherwise no marks will be given. A AUSTRALIAN INSTITUTE OF HIGHER EDUCATKIN BISY2002 Information Systems Networking Essentials II. Write Subnet Mask, Network ID, Broadcast ID and host address range for Router B Subnet. You must clearly explain all the steps involved otherwise no marks will be given. Question 3: What is a Distributed Denial of Service attack (DD0S)? Briefly explain the UDP Flood DDOS attack

Question 17     Tom accesses host C with IP address IPC via host B with IP address IPB from host A with IP address IPA using SSH. How to capture all the TCP request traffic of the outgoing link of Host B?    Question options:   tcpdump tcp src IPB and dst IPC and dst port 22 and 'tcp[13] &8!=0'   tcpdump tcp src IPB and dst IPC and dst port 22 and 'tcp[13] &32!=0'   tcpdump tcp src IPB and dst IPC and port 22 and 'tcp[13] &16!=0'   tcpdump tcp src IPB or dst IPC and dst port 22 and 'tcp[13] &8!=0'

VLAN 10 192.168.10.0/24's default gateway is R1's subinterface G0/1.10. Which two subinterface instructions allow VLAN 10 inter-VLAN routing?* 5. Which Cisco layer 3 (multilayer) switch (S1) commands upgrade a layer 2 interface to layer 3 and allow IPV4 routing?-

Question 1     Tom accesses host C with IP address IPC via host B with IP address IPB from host A with IP address IPA using SSH. How to capture all the TCP response traffic of the incoming link of Host B?   Question options:   tcpdump tcp src IPB and dst IPA and src port 22 and 'tcp[13] & 8 !=0'   tcpdump tcp src IPB and dst IPA and src port 22 and 'tcp[13] & 16 !=0'   tcpdump tcp src IPB and dst IPA and dst port 22 and 'tcp[13] & 8 !=0'   tcpdump tcp src IPB and dst IPA and port 22 and 'tcp[13] & 8 !=0'

Question 1     Tom accesses host C with IP address IPC via host B with IP address IPB from host A with IP address IPA using SSH. How to capture all the TCP response traffic of the incoming link of Host B?   Question options:   tcpdump tcp src IPB and dst IPA and src port 22 and 'tcp[13] & 8 !=0'   tcpdump tcp src IPB and dst IPA and src port 22 and 'tcp[13] & 16 !=0'   tcpdump tcp src IPB and dst IPA and dst port 22 and 'tcp[13] & 8 !=0'   tcpdump tcp src IPB and dst IPA and port 22 and 'tcp[13] & 8 !=0'   Question 6     Tom accesses host C with IP address IPC via host B with IP address IPB from host A with IP address IPA using SSH. How to capture all the TCP traffic from Host A to Host B?     Question options:   tcpdump tcp src IPA or dst IPB and dst port 22   tcpdump src IPA and dst IPB and dst port 22   tcpdump tcp src IPA and dst IPB…

Refer to Figure Q.2d , and answer the questions belowi. Which Router Information Protocol (RIP) version would you recommend. Giving TWO reasons justify your choice. ii. Describe FIVE general characteristics of RIP

Class b network: 130.30.0.0 a. How many bits are in the host field for this network?b. If we want to set up subnets to allow up to 200 hosts on each subnet, how many host bits must be used for host addressing?c. How many bits are left over that can be used for subnetting?d. How many subnets can we create from this? total subnet? usable subnet? e. How many hosts could be assigned on each subnets? total possible hosts? usable hosts?f. What subnet mask will be used?

Question 6     Tom accesses host C with IP address IPC via host B with IP address IPB from host A with IP address IPA using SSH. How to capture all the TCP traffic from Host A to Host B?     Question options:   tcpdump tcp src IPA or dst IPB and dst port 22   tcpdump src IPA and dst IPB and dst port 22   tcpdump tcp src IPA and dst IPB and dst port 22   tcpdump tcp src IPA and dst IPB and src port 22

Question 3 Which of the following statement is false? O WiFi link layer frames always have two MAC addresses (source and destination). O WiFi link layer frames have enough fields to indicate more than two MAC addresses. Ethernet frames indicate only two MAC addresses (source and destination). Ethernet frames can have broadcast MAC address in the destination MAC address field.

You will need to write a report and explain how DHCP can improve the function of the Figure 1 implementation? and configure the devices in the Admin, Accounting and Sales and wireless area to have their IP addresses assigned automatically via DHCP configured on the router.

B4. Given the topology below with IP address 172.9.125.128/25, create an IP plan using VLSM and fill out the table below. 2960 24TT Sw cho PČ1 LANB (10 Hosts) Lan A (60 Hosts) 2911 IBRI Router 2960-24TT Sw itch1 PC-PT PCO Name Network Address Subnet Mask First Broadcast (Network Id) Available Address Host LAN A |LAN B

Question 4. a. Buffering at router is required when datagrams arrive from fabric faster than thetransmission rate. If there are 64 flows to a router with RTT of 200 ms and capacity of1Gbps. How much buffer size is required?b. What is the basic functionality of DHCP protocol? Give the steps (request/response) ofhost configuration in DHCP?c. Calculate the efficiency of CSMA/CD for a LAN if propagation time is 10ms andtransmission time is 50ms.

5. If an interface of a router uses HDLC as the data link layer protocol, which is the default network type determined by OSPF? OA. Point-to-point B. Broadcast OC. NBMA OD. Point-to-multipoint

1. What is the purpose of an IP address mask? Suppose an IP address isidentified as 200.60.40.88/24. What is the network address in this case?What is the host address? How many hosts can this network addresssupport? Repeat this exercise for the IP address 222.66.44.80/26.2. Explain the concept of a DHCP lease. How is it obtained? How is itused? What does it provide?3. Explain the operation of the Address Resolution Protocol.4. Explain the relationship between corresponding layers at the sourceand destination nodes of a TCP/IP communication connection.

P1

Suppose you have to deliver an email to your friend, Anis with IP address 192.168.10.20 and physical address A22:44:10:20:22:10. Anis’s has an IP address 192.168.60.70 and a physical address C5:10E:A2:59:100:AC. Both of you are on the same Ethernet network. I. What is address mapping? Which operation do you use to collect physical address by using logical address?II. Show the ARP request and reply packets encapsulated in Ethernet frames.