assume that the link layer uses the flag bytes with byte stuffing approach for framing, with the following details: The beginning of a data frame is indicated by the special flag bytes: DLESTX The end of a data frame is indicated by the special flag bytes: DLEETX The special escape bytes DLE are used for escaping accidental occurrences of either the flag bytes or the escape bytes within the data. For simplicity, assume that no other header/trailer information is added to the data.   1. The following byte stream represents data that needs to be framed by the link layer on the sender’s side. Derive the resultant byte stream by adding necessary flag bytes and performing byte stuffing. PARSDLEETXZKPUM   I have this answer but it is wrong    DLESTXPARDLEETXZKPUMDLEETX

Hello. I need help developing a C or C++ program that simulate an 8-port Ethernet switch. The switch initially has no knowledge about the hosts connected to each port. It learns frame addresses and stores-and-forwards the frames. The input text file "in.txt" contains information of the incoming frames, one frame per line. There are 4 pieces of data per line: frame ID, arrival port, frame source address,and frame destination address. The frames arrive at the switch in the order of which they appearin the input file. Destination address "X" indicates a broadcast frame.  Thank you!   ********************PLEASE YOUR CODE MUST BE COMPLETE, COMPILE AND EXECUTE****************   The output text file "out.txt" has 8 lines. Each line lists all the frames departing from each port, here is an example:  "in.txt" contains 5 incoming frames:F1 P2 B--AF2 P6 D--CF3 P5 E--BF4 P7 F--DF5 P6 D--X"out.txt" should list the departing frames on each port:P1: F1 F2 F5P2: F2 F3 F5P3: F1 F2 F5P4: F1 F2 F5P5: F1…

You're not sure what the data represents, but you've been told it uses a dual layer obfuscation as follows: Hex with "\x" delimiter Base64 with standard alphabet After you de-obfuscate the given Hex dats, what information do you find? Do some research. What have you found? NOTE: DO NOT BROWSE THESE! Hint: focus on the strings following "/". Essentially, this practical has two stages: 1. De-obfuscate the Hex and give the output. 2. Research the nature of what you found and identify it.

Suppose a malloc implementation returns 8-byte aligned addresses and uses an explicit free list where the next and previous pointers are each 32-bits. Blocks have a 32-bit header and 32-bit footer, where the low-order bit of the header and footer are used to indicate whether the block is allocated (1) or free (0). Furthermore, the block size (which includes the header, payload, footer, and any necessary padding) is rounded up to the nearest multiple of 8, and this size (in bytes) is stored in the header and footer. Assume any padding must be between the payload and the footer.If we call malloc(1), what block size will be allocated, in bytes? With the same conditions as #1, and assuming we've already called malloc(1), if the heap used by malloc starts at address 0x4000 (16384 in decimal), what address would be returned if we then called malloc(32)?

In this assignment, you will be asked to describe how one of the cache protocols works.

Consider a file system that uses indexed allocation with a maximum of one index node per file. Suppose the index node occupies 4096 bytes, that each block pointer occupies 4 bytes. Ignore the metadata associated with the file that is usually contained in the index node. How large should a block be (in bytes) so that this scheme is able to completely access files on a 1 GB file system?

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Question 23 A client's browser sends an HTTP request to a website. The website responds with a handshake and sets up a TCP connection. The connection setup takes 2.1 ms, including the RTT. The browser then sends the request for the website's index file. The index file references 8 additional images, which are to be requested/downloaded by the client's browser. Assuming all other conditions are equal, how much longer would non-persistent HTTP take than persistent HTTP? (Give answer in milliseconds, without units, rounded to one decimal place. For an answer of 0.01005 seconds, you would enter "10.1" without the quotes.)

a) Consider the following page reference string: 1, 2, 5, 3, 4, 6, 7, 7, 1, 0, 5, 4, 6 a) A paging scheme with THREE (3) frames initially empty are considered. Trace the allocationof pages to frames and determine the number of page faults occur using the First-in-First-out(FIFO) page replacement algorithm.  b) Assume a system is able to support up to 2,000 users. Suggest a UNIX protection schemewhich allows access to a single file named “MPX.pdf” for 1,990 users. How would you treatthe remaining 10 users who shall not be given access to the file?

Please do not use a python code already on the internet. The following code must be written in python for this HW assignment. I will provide a skeleten for the code and you must write some lines of code to satisfy the objective of the prorgram. you need to develop a web server that handles one HTTP request on at a time. the  web server should acceptand parse the HTTP request, get the requested file from the server’s file system,  and create an HTTP responsemessage consisting of the requested file preceded by header lines, and then send the response directly tothe client. If the requested file is not present in the server, the server should send an HTTP “404 NotFound” message back to the client.  Dont need the hole code just right the information and code it to the skeleten pictures below.