buffer pool of size 4 pages and will access this access pattern in the given order: RDBMSTHEORY. At the end of accessing all the pattern, what is the content of the buffer pool (write in alphabetical order)? Use the CLOCK algorithm as the buffer replacement policy and don't advance the c
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1. Assume that you have an empty buffer pool of size 4 pages and will access this access pattern
in the given order: RDBMSTHEORY. At the end of accessing all the pattern, what is the content
of the buffer pool (write in alphabetical order)? Use the CLOCK
replacement policy and don't advance the clock when the requested page is already in the
buffer.
Step by step
Solved in 3 steps
- Answer the followings:1. Assume that you have an empty buffer pool of size 4 pages and will access this access patternin the given order: RDBMSTHEORY. At the end of accessing all the pattern, what is the contentof the buffer pool (write in alphabetical order)? Use the CLOCK algorithm as the bufferreplacement policy and don't advance the clock when the requested page is already in thebuffer.2. Start with an empty buffer pool of size 4 pages again. This time use this access pattern:♯SAGLIKLIMUTLUBAYRAMLAR♯. At the end of accessing all the pattern, what is the content ofthe buffer pool (write in alphabetical order)? Use the LRU algorithm as the buffer replacementpolicy.In this part, we add the CPU temperature ID of the Raspberry Pi to the MQTT stream. Open a new terminal and create a new script by the name of py and add the following content to it. import paho.mqtt.client as mqtt import time from subprocess import check_output from re import findall def get_temp(): temp = check_output(["vcgencmd","measure_temp"]).decode("UTF-8") return(findall("\d+\.\d+",temp)[0]) def on_connect(client, userdata, flags, rc): print("Connected with result code "+str(rc)) client.subscribe("etec224_mqtt_test/") global Connected Connected = True Connected = False client = mqtt.Client() client.on_connect = on_connect client.connect("broker.emqx.io", 1883, 60) client.loop_start() while Connected!= True: #Wait Here time.sleep(0.1) try: while True: value = get_temp() client.publish('etec224_mqtt_test/', value) time.sleep(1) except KeyboardInterrupt: client.disconnect()…A process refers to 5 pages, A, B, C, D, E in the order : A, B, C, D, A, B, E, A, B, C, D, E. If the page replacement algorithm is FIFO, the number of page transfers with an empty internal store of 3 frames is : Select one: a.9 b.10 c.8 d.7
- Suppose you have two columns, [Text1] and [Text2], in a MS Access table, how do you enforcethat only one of them can have a value?A) Apply the validation rule to either [Text1] or [Text2] column: ([Text1]="" And [text2]<>"") Or ([Text1]<>""And [text2]="" B) Apply the validation rule to either [Text1] or [Text2] column: ([Text1]="" And [text2]!="") Or ([Text1]!=""And [text2]="" C) Apply the validation rule to the table: [Text1] or [Text2] column: ([Text1]="" And [text2]!="") Or([Text1]!="" And [text2]="" D) Apply the validation rule to the table: ([Text1]="" And [text2]<>"") Or ([Text1]<>"" And [text2]="" E) none of the aboveYou will be need to make use of cypher block chaining or cypher feedback mode in the event that you are transferring a really large file.How much more effective is one than the other?The If-Modified-Since header can be used to check whether a cached page is still valid. Requests can be made for pages containing images, sound, video, and so on, as well as HTML. Do you think the effectiveness of this technique is better or worse for JPEG images as compared to HTML?
- When dose buffer overflows occur Buffer overflows occurs when we do not properly account for the size of the data input into an application. When there is an escalation of privilege in an application When there is no appropriate authentication mechanism When authorization is not implemented on a given application.A local write system call is not an idempotent operation but the write remote procedure call in NFS is idempotent. What makes the NFS RPC call idempotent? a) The write RPC sends data from the client's buffer cache rather than from the user's program. b) One of the parameters is the file offset. c) The RPC system supports at-most-once semantics. d) Each procedure call contains a unique sequence number so duplicates can be discarded.Question #9 Is each of the following an absolute pathname, a relative pathname, or a simple filename? milk_co correspond/business/milk_co /home/max /home/max/literature/promo .. letter.0210 Question #10 Suppose you have a file that is linked to a file owned by another user. How can you ensure that changes to the file are no longer shared? Question #11 If /home/zach/draft and /home/max/letter are links to the same file and the following sequence of events occurs, what will be the date in the opening of the letter? Max gives the command vim letter. Zach gives the command vim draft. Zach changes the date in the opening of the letter to January 31, writes the file, and exits from vim. Max changes the date to February 1, writes the file, and exits from vim. Question #12 What is an inode? What happens to the inode when you move a file within a filesystem? Question #13 The ls –i command displays a filename…
- Create a bash script that will take two directories as input parameters, iterate over the lists of files, and report files which are either present in one directory but missing in the other, or present in both directories but differ in content. The script MUST NOT consider subdirectories or files therein. The script should work with both relative and absolute paths. This also means the output format displayed must contain a relative or absolute path depending on what the original argument was (see attached image for commands allowed)Suppose you wrote a program like HW9's rpn.c, except it was to read the input from a file opened with fopen instead of from stdin. Assume that code contains the line fscanf(f, "%s", buffer), where f was that opened file. Based on this information, your code: A. Has a buffer overrun vulnerability B. Has a use-after-free vulnerability C. Has an uninitialized memory vulnerability D. Will cause a segmentation faultYou must utilize cypher block chaining or cypher feedback mode if you need to transfer a really large file.If one is more effective, by what percentage is it better?