Ann, a customer, recently upgraded her soho internet to gigabit fiber from cable. she was previously getting speeds around 75mbps down and 25mbps up. after the upgrade, ann runs a speed test on her desktop and gets results of 1000mbps down and 100mbps up. a technician connects directly to the router and sees the correct 1000mbps speeds. which of the following is most likely the cause? (select two).a. all ports should be configured for full duplex. b. there is a 10/100 switch on the network. c. the connections are using cat 5 cable. d. the connections are using cat 6 cable. e. there is a transceiver mismatch at the fiber termination point. f. signal attenuation on the new fiber has reached the upper limits.

Computer security/cybersecurity1) each of the following code fragments contains a number of security vulnerabilities. for each fragment, identify these security vulnerabilities and, for each vulnerability, discuss at least one way that it could be improved. note that in your discussion of how each vulnerability could be improved, you do not need to re-write a new version of the program in c; simply discuss your solution, either in pseudocode or in 1-2 sentences. a) /* file descriptor leak */#include #include int main(int argc, char *argv[]){ char *filepath = argv[0]; char *shellpath = argv[1]; file *passwords; passwords = fopen(filepath, "r"); /* read the password and do something with it */ /* . . */ /* fork and execute alternative shell */ execl(shellpath, "shell", null); }b)#include /* assume the following function is written for an electronic storefront. the user will enter the id of the item to be ordered, as well as the quantity of units that they would like to purchase. the program will then lookup the price for the price for the item using a predefined function, and return the total cost of the order.*/int gettotalcost(){ char itemid[9]; int price, unitsordered, cost; printf(" enter the 9-digit id of the item to be ordered: "); scanf("%s", & itemid); /* lookup the price according to the itemid */ price = getpricebyid(itemid); printf(" enter the quantity of units to be ordered: "); scanf("%d", & unitsordered); cost = price * unitsordered; return cost; }c)#include /* the following function is intended to return a user's full name by concatenating the user's first and last name into a single string and then returning that string. */char *getfullname(char *firstname, char *lastname, int max_len){ char fullname[max_len]; strcpy(fullname, firstname); strcat(fullname, " "); strcat(fullname, lastname); return fullname; }d)#include /* the following code snippet runs through the list of cli arguments entered and displays them to the console. */int main(int argc, char *argv[]){ int i; printf("you've entered the following arguments: "); for(i = 0; i < argc; i++){ print(argv[i]); printf("\n"); } /* */}

Write multiple if statements: if caryear is before 1968, print "probably has few safety features." (without quotes). if after 1971, print "probably has seat belts.". if after 1991, print "probably has anti-lock brakes.". if after 2002, print "probably has airbags.". end each phrase with period and newline. ex: caryear = 1995 prints:

Select all that apply. select all functions of an operating system. displays a gui. allows you to multitask. allows you to use the software that you want to use. allows you to edit images. coordinates the interaction of hardware and software. defrags the hard drive. allocates the computer's resources. saves data. retrieves files. keeps confidential documents secure. copies information from one document to another.