Describe two legitimate uses of BitTorrent software.
What will be an ideal response?
BitTorrent is extremely efficient for the distribution of large files and has become the method of choice for distributing Linux distributions and is even used to distribute Blizzard games (and patches for those games) like World of Warcraft and Starcraft II.
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Case-Based Critical Thinking QuestionsCase 9-1Kyra is preparing speaker notes and handouts for her presentation. Please answer the questions below.Kyra notices that several of the slides do not contain notes. Kyra will click the ____ view button to display speaker notes, and will add them to the slides where notes are missing.
A. Slide Show B. Presenter C. Print D. Normal
You are required to create a conceptual data model of the data requirements for a company that specializes in IT training. The Company has 30 instructors and can handle up to 100 trainees per training session. The Company offers five advanced technology courses, each of which is taught by a teaching team of two or more instructors. Each instructor is assigned to a maximum of two teaching teams or may be assigned to do research. Each trainee undertakes one advanced technology course per training session.
(a) Identify the main entity types for the company. (b) Identify the main relationship types and specify the multiplicity for each relationship. State any assumptions you make about the data. (c) Using your answers for (a) and (b), draw a single ER diagram to represent the data requirements for the company.
Scanner method _____________ reads characters until it encounters a newline character, then returns those characters as a String.
Fill in the blank(s) with the appropriate word(s).
What is the meaning of the output? Where are the listed files physically stored?
Exploring Filesystems in Linux Step 1. Access the command line. Launch the CyberOps Workstation VM and open a terminal window. Step 2. Display the filesystems currently mounted. a. Use the lsblk command to display all block devices:
[analyst@secOps ~]$ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 5.9G 0 disk ??sda1 8:1 0 5.9G 0 part / sdb 8:16 0 1G 0 disk ??sdb1 8:17 0 1023M 0 part sr0 11:0 1 1024M 0 romThe output above shows that the CyberOps Workstation VM has three block devices installed: sr0, sda and sdb. The tree-like output also shows partitions under sda and sdb. Conventionally, /dev/sdX is used by Linux to represent hard drives, with the trailing number representing the partition number inside that device. Computers with multiple hard drives would likely display more /dev/sdX devices. If Linux was running on a computer with four hard drives for example, it would show them as /dev/sda, /dev/sdb, /dev/ sdc and /dev/sdd, by default. The output implies that sda and sdb are hard drives, each one containing a single partition. The output also shows that sda is a 5.9GB disk while sdb has 1GB. b. Use the mount command to display more detailed information on the currently mounted filesystems in the CyberOps Workstation VM.
[analyst@secOps ~]$ mount proc on /proc type proc (rw,nosuid,nodev,noexec,relatime) sys on /sys type sysfs (rw,nosuid,nodev,noexec,relatime) dev on /dev type devtmpfs (rw,nosuid,relatime,size=1030408k,nr_ inodes=218258,mode=755) run on /run type tmpfs (rw,nosuid,nodev,relatime,mode=755) /dev/sda1 on / type ext4 (rw,relatime,data=ordered) securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,rela time) tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev) devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmo de=000) tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)Many of the filesystems above are out of scope of this course and irrelevant to the lab. Let’s focus on the root filesystem, the filesystem stored in /dev/sda1. The root filesystem is where the Linux operating system itself is stored; all the programs, tools, configuration files are stored in root filesystem by default. c. Run the mount command again, but this time, use the pipe | to send the output of mount to grep to filter the output and display only the root filesystem:
[analyst@secOps ~]$ mount | grep sda1 /dev/sda1 on / type ext4 (rw,relatime,data=ordered)In the filtered output above, mount shows us that the root filesystem is located in the first partition of the sda block device (/dev/sda1). We know this is the root filesystem because of the mounting point used: “/” (the slash symbol). The output also tells us the type of formatting used in the partition, ext4 in this case. The information in between parentheses relates to the partition mounting options. d. Issue the following two commands below on the CyberOps Workstation VM:
[analyst@secOps ~]$ cd / [analyst@secOps /]$ ls -l