write an access control list which should only allow 192.168.10.0 & 192.167.10.0 & 192.166.10.0 to access network devices (routers and switches) through SSH and Telnet?
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A: Note:The solution to above problem is discussed below; Hope it help you to understand.
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write an access control list which should only allow 192.168.10.0 & 192.167.10.0 & 192.166.10.0 to access network devices (routers and switches) through SSH and Telnet?
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- 4. [Socket] What is a socket? Suppose a process in Host C has a UDP socket with port number6789. Suppose both Host A and Host B send a UDP segment to Host C with destination portnumber 6789. Will both segments be directed to the same socket at Host C? If so, how will theprocess at Host C know that these two segments originated from two different hosts? 5. [Demultiplex] Define multiplexing and demultiplexing. Briefly explain how TCP demultiplexing isdifferent than UDP demultiplexing. 6. [rdt] Consider a reliable data transfer protocol that uses only negative acknowledgments.Suppose the sender sends data only infrequently. Would a NAK-only protocol be preferable to aprotocol that uses ACKs? Why? Now suppose the sender has a lot of data to send and the end-to-end connection experiences few losses. In this second case, would a NAK-only protocol bepreferable to a protocol that uses ACKs? Why?Scenario There is design1.csv file attached to this router interfaces ip_on_interfaces R1 s1, fa1 10.0.2.1, 192.168.1.3 R2 s0 10.0.2.2, R3 s0, Fa0, s1 10.0.2.3, 192.168.4.3, 192.168.5.5 R4 s0, s2 10.0.2.4, 192.168.8.8, Write a Python script to generate configuration files automatically for each router in the first column. Example, for router R1, the configuration file name should be “r1_config.cfg” and so on. The configuration commands for router R1 are as follows, the other routers’ commands are similar, according to the design file: #configure terminal # hostname R1 # enable secret Pas$w0rD # interface s1 # ip address 10.0.2.1 # no shutdown # interface fa0/1 # ip address 192.168.1.3 # no shutdown # endGiven a Class C subnet Mask 255.255.255.192. what will be the subnet address and host number for a machine with IP address 197.1.2.67. Select one: a. second subnet and host 2 b. Third subnet and host number 3 c. second subnet and host 4 d. First subnet and host number 3 e. None f. Second subnet and host number 3
- 21.) Consider the following configuration. Computer “A” IP address: 172.16.100.100 Subnet mask: 255.255.0.0 Computer “B” IP address: 172.16.200.200 Subnet mask: /16 What should be done to allow these computers to send and receive data to and from each other? A.) Nothing needs to be changed. B.) Delete the subnet mask from each computer. C.) A router must be configured and placed between the two computers. D.) Remove the hub between the two computers and replace it with a switch.What is the maximum number of hosts that can be accommodated in a subnet with a subnet mask of 255.255.255.224?TCP sockets handle data sent as a byte stream, but UDP sockets are aware of message boundaries.What are the advantages and disadvantages of a byte-oriented API versus an AP that recognises and preserves application-defined message boundaries?
- 22. A datagram subnet allows routers to drop packets whenever they need to. The probability of a router discarding a packet is p. Consider the case of a source host connected to the source router, which is connected to the destination router, and then to the destination host. If either of the routers discards a packet, the source host eventually times out and tries again. If both host-router and router-router lines are counted as hops, what is the mean number of a. (a) hops a packet makes per transmission? b. (b) transmissions a packet makes? (c) hops required per received packet?22. A datagram subnet allows routers to drop packets whenever they need to. The probability of a router discarding a packet is p. Consider the case of a source host connected to the source router, which is connected to the destination router, and then to the destination host. If either of the routers discards a packet, the source host eventually times out and tries again. If both host-router and router-router lines are counted as hops, what is the mean number of a. (a) hops a packet makes per transmission? b. (b) transmissions a packet makes? c. (c) hops required per received packet?Let's imagine that a computer on the Internet transmits a packet to another computer at the network layer. The logical destination address of the packet has encountered an issue. What address should I use for the package? How will the original computer know when this happens?
- Assume a computer sends a packet to another computer through the Internet's transport layer. There is no process with the destination port address running on the target machine. What is going to happen?Draw a NAT Table Entry at the Router for the Computer (A) (shown with a smiley face J) trying to reach the Web Server (listening at Port 80) as shown. You may use dynamic port numbers.QUESTION 19 Suppose a process in Host C has a UDP socket with port number 4320. Suppose both Host A and Host B each send a UDP segment to Host C with destination port number 4320. Then both of these segments will be directed to the same socket with port number 4320 at Host C True False QUESTION 20 With TCP’s flow control mechanism, where the receiver tells the sender how much free buffer space it has (and the sender always limits the amount of outstanding, unACKed, in-flight data to less than this amount), it is not possible for the sender to send more data than the receiver has room to buffer. True False