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External fragmentation can be addressed using a technique known as___________, which is discussed in detail in QUESTION 5.
Step by step
Solved in 2 steps
- 1.Which of the following is NOT a countermeasure to prevent buffer overflow attacks? Disabling firewalls Implementing input validation Implementing executable space protection Implementing stack canaries 2.In a buffer overflow attack, what is the attacker trying to achieve? Executing arbitrary code Stealing user credentials Shutting down the target system Disrupting network traffic 3.Name ONE programming language which is NOT vulnerable to buffer overflow.1) What happens if myfile.txt does not exist? Group of answer choices fopen("myfile.txt", "r") returns FALSE fread("myfile.txt") returns 0 bytes fopen("myfile.txt", "r") creates "myfile.txt" fread("myfile.txt", filesize("myfile.txt")) returns FALSE 2) The mysql command-line tool is used to _____. perform administrative functions in MySQL server access a database without using a username and password connect to any database that exists on the same machine develop websites that need to access a MySQL database 3) Fill in the blank to have this code block display selected information using PDO. $sql = "SELECT itemName, quantity FROM inventory WHERE quantity > 1"; $result = $pdo->query($sql);foreach (_____) { echo "There are $row[quantity] of $row[itemName].<br>\n";} Group of answer choices $result as $row $row = $result->fetch() $row as $result->fetch() $result in $row 4) What MySQL error code is returned when the following SQL statement…Consider applications “Q1”, “Q2”, “Q3”, and “Q4” as shown. These applications work on the table STUDENTS defined as “STUDENTS (RNO, NAME, ADDRESS, SEM, MARKS),” where RNO is the primary key column of the table. Q1: Select NAME from STUDENTS where MARKS = 100; Q2: Select MARKS from STUDENTS; Q3: Select SEM from STUDENTS where ADDRESS = ‘RWP’; Q4: Select NAME from STUDENTS where SEM = 6; Perform vertical fragmentation? S1 S2 S3 S4 Q1 1 0 2 0 Q2 0 4 3 0 Q3 0 0 4 0 Q4 3 0 0 0 frequency matrix Calculate usage matrix, Attribute affinity matrix, and Clustered affinity matrix? Calculate Split point?
- 1. The _________ periodically receives a __________ and a blockreport from each ______ in the __________. A) Cluster, heartbeat, datanode, namenode B) Namenode, heartbeat, datanode, cluster C) Datanode, heartbeat, cluster, namenode D) Datanode, cluster, heartbeat, namenode 2. Which of the following conditions is suitable for HDFS? A) Large file size B) Write Many, Read Once C) Low-latency (short waiting time) data access D) All of the above 3. Which of the following about storing HDFS blocks is correct? A) Spread HDFS data uniformly across the datanodes in the cluster. B) Keep one of the replicas of a block on the same node as the node that is writing the block. C) Spread one replica of a block across another rack so that cluster can survive loss of whole rack. D) All of the aboveGFS snapshots enable nearly instantaneous copies of huge files or entire directory structures. How does GFS do this quickly? a) By acknowledging the request immediately and performing the copies in the background. b) By pipelining writes through multiple chunkservers at once. c) By storing all the data in memory. d) By having multiple files point to the same set of chunks until one of the files gets modified.This header may be used to determine if a cached page has been modified since it was last accessed. Requests may be made for pages that include pictures, sound, video, and other types of media, in addition to HTML. Do you believe that the efficacy of this approach is greater or worse when used to JPEG pictures as opposed to HTML code? Consider the definition of "efficacy" carefully, and then provide an explanation for your choice.
- What are some disadvantages of page fragmentation?Match the MITRE ATT&CK Tactic to the Technique it falls into folowing: Which one of the below match with persistence? Steal application access token Scheduled task/job Command and scripting interpreter Traffic signaling Supply chain compromise Build image on host Exportation of remote services Gather victim host informationExplain the significance of Apple's FileVault and Gatekeeper in enhancing data security and application integrity within macOS.
- What happens when a process tries to access a non-cached page? What steps comprise this procedure? Each action should be summarized in bullet points.Because Symbian, Android, and iPhone all use the same file-delete algorithm, how does this affect the performance of these mobile OSes?To implement LRU, each page uses a referenced bit. If we wanted to implementa least frequently used (LFU) page removal algorithm, where the least-usedpage would be removed from memorv. what would we need to add to thetables? What software modifications would have to be made in order tosupport this new algorithm?