based subnets given the following information. Site address (CIDR Notation) = 192.168.10.0/24 Subnet Included hosts Number of hosts required Subnet ID (
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Using https://wiki.dd-wrt.com/wiki/index.php/Linking_Subnets_with_Static_Routes as a base, modify the scenario for VLSM based subnets given the following information.
Site address (CIDR Notation) = 192.168.10.0/24
Subnet |
Included hosts |
Number of hosts required |
Subnet ID |
1 |
Computer Labs 1 and 2 |
110 |
? |
2 |
Computer Lab 3 |
60 |
? |
192.168.10.0/24
here /24 means total number of network bits is 24.
And therefore number of host bits is 8.
For subnetting we need to borrow bits from subnet bits.
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Solved in 2 steps
- If we have the network-ID of subnet 127.91.220.100 And as shown in the picture we need to plan network , Rt-A = 2100 hosts , Rt-B= 1000 hosts, Rt-C= 300 hosts, Rt-D = 600 hosts. NOTE: It is possible to allocate more than one subnet per interface. Create a table for each of the eight networks that contains the network-ID and subnet mask for the subnet/subnets in that network.Download delays for 100 objects (HTTP 1.1 with browser caching). Consider an HTTP 1.1 client and server. The RTT delay between the client and server is 2 seconds. Suppose the time a server needs to transmit an object into its outgoing link is 3 seconds, as shown below for the first of these 100 requests. initiate TCP connection RTT request file RTT file received time You can assume that any other HTTP message not containing an object sent by the client and server has a negligible (zero) transmission time. Suppose the client makes 100 requests, one after the other, waiting for a reply to a request before sending the next request. 352 secs Using HTTP 1.1, how much time elapses between the client transmitting the first request, and the receipt of the last requested object, assuming the client uses the IF- MODIFIED-SINCE header line, and 50% of the objects requested have not changed since the client downloaded them (before these 100 downloads are performed)? 350 secs 252 secs time to…Suppose within your web browser you click on a link to obtain a Web page. The IP address for the associated URL is not cached in your local host, so a DNS lookup is necessary to obtain the IP address. Suppose that three DNS servers are visited before your host receives the IP address from DNS. The first DNS server visited is the local DNS cache, with an RTT delay of RTT = 4 msecs. The second and third DNS servers contacted have RTTs of 45 and 24 msecs, respectively. Initially, let's suppose that the Web page associated with the link contains exactly one object, consisting of a small amount of HTML text. Suppose the RTT between the local host and the Web server containing the object is RTTHTTP = 9 msecs. Assuming zero transmission time for the HTML object, how much time elapses from when the client clicks on the link until the client receives the object? (Do not forget the TCP handshake(s).) 82 msecs O 91 msecs O 46 msecs O 67 msecs
- Q1: In OSPF, the IP address . is used for Designated Router (DR) and a Backup Designated Router (BDR). Q2: In IPV6: The address used for communication between two hosts (which are there on the same link) when no IP address is specified is called . - Global - Site local - link local - None of the above Q3: In link state algorithm, each router contains a database containing a map of the whole topology (Links, Their state) - True - FalseIf we have the network-ID of subnet 127.91.220.100 And as shown in the picture we need to plan network , Rt-A = 2100 hosts , Rt-B= 1000 hosts, Rt-C= 300 hosts, Rt-D = 600 hosts. create suitable subnets from the subnet that was given . NOTE: It is possible to allocate more than one subnet per interface. Create a table for each of the eight networks that contains the network-IDand subnet mask for the subnet/subnets in that network. Net ADD TO ID SUB Network_ID Brodcast SUBNET A1 A2 B C1 C2 D1 D2 D3Download delays for 100 objects (HTTP 1.1 with local web caching). Consider an HTTP 1.1 client and server. The RTT delay between the client and server is 2 seconds. Suppose the time a server needs to transmit an object into its outgoing link is 3 seconds. There is also a local web cache, as shown in the figure below, with negligible (zero) propagation delay and object transmission time. The client makes 100 requests one after the other, waiting for a reply before sending the next request. All requests first go to the cache (which also has a 2.0 sec. RTT delay to the server but zero RTT to the client). How much time elapses between the client transmitting the first request, and the receipt of the last requested object, assuming no use of the IF-MODIFIED-SINCE header line anywhere, and assuming that 50% of the objects requested are "hits" (found) in the local cache? Your answer should be among the following list( 702 secs, 552 secs, 352 secs, 350 secs, 150 secs) . Show your…
- • IPV6 addresses use 128 bits to represent an address which includes bits to be used for subnetting. The second half of the address (least significant 64 bits) is always used for hosts only. Therefore, there is no compromise if we subnet the network. Use the Figure below to Create five subnets using route prefix 2001:db:acad::/48 (1 Marks) Routing Prefix Subnet ID Interface ID 48 Bits 16 Bits 64 BitsSuppose we have a web page which contains 10 objects including: a html main file, 8 jpg image, and a .mp3 background music. For simplicity, assume each of the 10 objects has a size of 4 Kbits and that each object can be completely transferred in one TCP packet. Furthermore, assume the round-trip time between the server and client is RTT= 250 ms, and the download rate is 1 Mbps. What will be the time it takes to complete transferring the web page running in the non-persistent mode? Total delay = msIn this problem, we use the useful dig tool available on Unix and Linux hosts to explore the hierarchy of DNS servers. Recall that in Figure 2.19, a DNS server in the DNS hierarchy delegates a DNS query to a DNS server lower in the hierarchy, by sending back to the DNS client the name of that lower-level DNS server. First read the man page for dig, and then answer the following questions. Starting with a root DNS server (from one of the root servers [a-m].root-servers.net), initiate a sequence of queries for the IP address for your department’s Web server by using dig. Show the list of the names of DNS servers in the delegation chain in answering your query. Please tell me how I should use dig and which part of output I should write for answer this question, best with picture example, thank you!
- B. Suppose within your Web browser you click on a link to obtain a Web page. The IP address for the associated URL is not cached in your local host, so a DNS lookup is necessary to obtain the IP address. Suppose that two DNS servers are visited before your host receives the IP address from DNS. The first DNS server visited is the local DNS cache, with an RTT delay of RTTO = 5 msecs. The second DNS server contacted has an RTT of 8 msecs. Initially, let's suppose that the Web page associated with the link contains exactly one object, consisting of a small amount of HTML text. Suppose the RTT between the local host and the Web server containing the object is RTTHTTP=63 msecs. 1. Assuming zero transmission time for the HTML object, how much time elapses from when the client clicks on the link until the client receives the object? 2. Suppose the HTML object references 4 very small objects on the same web server. Neglecting transmission times, how much time elapses from when the client…6. Consider the extended LAN connected using bridges B1 and B2 in the following figure. Suppose the hash tables in the two bridges are empty. List all the ports on which a packet will be forwarded for the following sequence of data transmissions: a. A sends a packet to C. b. E sends a packet to F. c. F sends a packet to E. d. G sends a packet to E. D sends a packet to A. f. B sends a packet to F. е. Hub D A Port 1 1 2 B1 B2 → H1 В 디 F G Bridge State each: Solution:A IPV6 global unicast address is composed of a Global Routing prefix = 2001:0540:FACE, Subnet ID = 0020, and an interface id = 0000:0000:0000:0040. Assuming the IPV6 global unicast address follows the "3+1+4" Rule, which of the following is the correct IPV6 global unicast address representation? %3D %3D 2001:540:FACE:20:40/32 2001:540:FACE:20:40/64 2001:540:FACE::40:20/32 2001:540:FACE::40:20/64