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lawyer [7]
3 years ago
14

You have 5 salespersons who work out of your office and who frequently leave their laptops laying on their desk in their cubicle

s. You are concerned that someone might walk by and take one of these laptops. Which of the following is the BEST protection to implement to address your concerns?
a. Require strong passwords in teh local security policy.b. Use cable locks to chan the laptops to the desks.c. Implement screen saver passwords.d. Encrypt all company data on the hard drives.
Computers and Technology
1 answer:
kati45 [8]3 years ago
3 0

There are different ways to ensure safety of devices. The best protection to implement to address your concerns is to use cable locks to chain the laptops to the desks.

  • The use of laptop locks is as good as when compared to bicycle chain locks. One can do this by looking for a big, immovable object, such as one's desk, and thereafter you wrap the metal cable around it and then insert the lock into your laptop's lock slot.

With this, your computer becomes theft-proof.

Thia will give you piece of mind as you will not be restless anymore.

Learn more about Laptop security from

brainly.com/question/24956493

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There will be 10 numbers stored contiguously in the computer at location x 7000 . Write a complete LC-3 program, starting at loc
Artist 52 [7]

Answer:

The LC-3 (Little Computer 3) is an ISA definition for a 16-bit computer. Its architecture includes physical memory mapped I/O via a keyboard and display; TRAPs to the operating system for handling service calls; conditional branches on N, Z, and P condition codes; a subroutine call/return mechanism; a minimal set of operation instructions (ADD, AND, and NOT); and various addressing modes for loads and stores (direct, indirect, Base+offset, PC-relative, and an immediate mode for loading effective addresses). Programs written in LC-3 assembler execute out of a 65536 word memory space. All references to memory, from loading instructions to loading and storing register values, pass through the get Mem Adr() function. The hardware/software function of Project 5 is to translate virtual addresses to physical addresses in a restricted memory space. The following is the default, pass-through, MMU code for all memory references by the LC-3 simulator.

unsigned short int get Mem Adr(int va, int rwFlg)

{

unsigned short int pa;

// Warning: Use of system calls that can cause context switches may result in address translation failure

// You should only need to use gittid() once which has already been called for you below. No other syscalls

// are necessary.

TCB* tcb = get TCB();

int task RPT = tcb [gettid()].RPT;

pa = va;

// turn off virtual addressing for system RAM

if (va < 0x3000) return &memory[va];

return &memory[pa];

} // end get MemAdr

Simple OS, Tasks, and the LC-3 Simulator

We introduce into our simple-os a new task that is an lc3 Task. An lc3 Task is a running LC-3 simulator that executes an LC-3 program loaded into the LC-3 memory. The memory for the LC-3 simulator, however, is a single global array. This single global array for memory means that alllc3 Tasks created by the shell use the same memory for their programs. As all LC-3 programs start at address 0x3000 in LC-3, each task overwrites another tasks LC-3 program when the scheduler swaps task. The LC-3 simulator (lc3 Task) invokes the SWAP command every several LC-3 instruction cycles. This swap invocation means the scheduler is going to be swapping LC-3 tasks before the tasks actually complete execution so over writing another LC-3 task's memory in the LC-3 simulator is not a good thing.

You are going to implement virtual memory for the LC-3 simulator so up to 32 LC-3 tasks can be active in the LC-3 simulator memory without corrupting each others data. To implement the virtual memory, we have routed all accesses to LC-3 memory through a get Mem Adr function that is the MMU for the LC-3 simulator. In essence, we now have a single LC-3 simulator with a single unified global memory array yet we provide multi-tasking in the simulator for up to 32 LC-3 programs running in their own private address space using virtual memory.

We are implementing a two level page table for the virtual memory in this programming task. A two level table relies on referring to two page tables both indexed by separate page numbers to complete an address translation from a virtual to a physical address. The first table is referred to as the root page table or RPT for short. The root page table is a fixed static table that always resides in memory. There is exactly one RPT per LC-3 task. Always.

The memory layout for the LC=3 simulator including the system (kernel) area that is always resident and non-paged (i.e., no virtual address translation).

The two figures try to illustrate the situation. The lower figure below demonstrates the use of the two level page table. The RPT resident in non-virtual memory is first referenced to get the address of the second level user page table or (UPT) for short. The right figure in purple and green illustrates the memory layout more precisely. Anything below the address 0x3000 is considered non-virtual. The address space is not paged. The memory in the region 0x2400 through 0x3000 is reserved for the RPTs for up to thirty-two LC-3 tasks. These tables are again always present in memory and are not paged. Accessing any RPT does not require any type of address translation.

The addresses that reside above 0x3000 require an address translation. The memory area is in the virtual address space of the program. This virtual address space means that a UPT belonging to any given task is accessed using a virtual address. You must use the RPT in the system memory to keep track of the correct physical address for the UPT location. Once you have the physical address of the UPT you can complete the address translation by finding the data frame and combining it with the page offset to arrive at your final absolute physical address.

A Two-level page table for virtual memory management.

x7000 123F x7000 0042

x7001 6534 x7001 6534

x7002 300F x7002 300F

x7003 4005 after the program is run, memory x7003 4005

x7004 3F19

7 0
3 years ago
Read 2 more answers
Write a loop that reads c-strings from standard input where the c-string is either "land", "air", or "water". The loop terminate
Anvisha [2.4K]

Answer:

I am writing a C++ code.        

#include <iostream> // for input output functions

using namespace std; // identifies objects like cin cout

int main() { //start of main() function body

string c_string; // stores the string entered by user from land water or air

int land=0; // contains the number of times land string is read in

int air=0; //contains the number of times air string is read in

int water = 0; //contains the number of times water string is read in

cin>>c_string; //reads the string entered by user from air water or land

/*while loop continues to execute until user enters xxxxx or maximum length of a string exceeds 8 */

while(c_string!= "xxxxx" && c_string.length()<=8) {

if(c_string=="land"){ // if string entered by user is land

land = land + 1;} //counts and increments each occurrence of land string by 1

else if(c_string=="air"){// if string entered by user is air

air = air + 1;}// counts and increments each occurrence of string air by 1

else if(c_string=="water"){// if string entered by user is water

water = water + 1;}//counts and increments each occurrence of air by 1

cin>>c_string;}

/* keeps reading the string entered by user from land air or water, until the loop breaks after the user enters xxxxx or user enters a string whose length is greater than 8 */

//prints the number of times land, air and water are read in

cout << "land:"<<land;

cout << endl<<"air:"<<air;

cout << endl<< "water:"<<water; }                      

                                                                                     

Explanation:

Everything is well explained in the comments above.

The program prompts the user to input strings. These strings are either land air or water. The while loop continues to read the input strings until user enters xxxxx or the string entered by user exceeds the length 8. Both these terminating conditions are added in the while loop. After the loop terminates, the number of times land, air and water strings are read is displayed on the output screen. Any other string entered by user other than these 3 is ignored. The program along with the output is attached.

3 0
3 years ago
A customer has a new laptop with wireless WAN capabilities; however, the software does not connect to the Internet. What would y
LUCKY_DIMON [66]

Answer:

Check below for the explanation

Explanation:

The following suggestions will be given to the customers:

  • Go to network settings and check the WIFI settings to confirm whether the WIFI connection is on. Switch the WIFI to the on position if it is off.
  • The customer should check if the wireless driver is installed on the computer, if the driver is not installed, he should try to install it
  • The customer should check all the available access points and confirm if their signal strengths are strong enough to allow for any connections. Restart the access point to enhance proper connection.
  • Check to see if your operating system is updated to support your internet connection. You can update your operating system to the latest version
  • Run a Network Diagnostics on your computer. This will run a couple of tests to see what’s possibly causing your Wi-Fi issues.
5 0
3 years ago
Which agency coordinates the internet's IP addressing and DNS systems?
german
ICANN is the agency which coordinates the internet's IP addressing and DNS systems.

ICANN stands for Internet Corporation for Assigned Names and Numbers. Aside from coordinating the Domain Name System (DNS) and Internet Protocol (IP) addresses, it also coordinates the technical protocol parameters of ARPA top level domain, Internet DNS root zone management (gTLD and ccTLD), allocates Internet number resources, and other services which will fulfill their vision of "one world, one Internet".

The performance of ICAANs services is all under a U.S Government contract.
4 0
3 years ago
Describe your dreams include lifestyle,job,house,friends
n200080 [17]
So, this is an answer of your choice. What it is trying to ask is tell us what your dream home, job, husband, and so on. For example: My dream home is a mansion in Mississippi by the beach. My dream job is a doctor. Those are prime examples of a dream home and job. Now your answer shouldn't be the same as mine. Your's should be something different. Unless, you want a mansion in Mississippi by the beach and you would like to be a doctor. In other words it is asking you to tell us what you want you home, lifestyle, job, friends, and possibly your DREAM pet. Hope this helps.

3 0
3 years ago
Read 2 more answers
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