When a program is adapted to run on multiple processors in a multiprocessor system, the execution time on each processor is comprised of computing time and the overhead time required for locked critical sections and/or to send data from one processor to another. Assume a program requires t = 100 s of execution time on one processor. When run p processors, each processor requires t/p s, as well as an additional 4 s of overhead, irrespective of the number of processors. Compute the per-processor execution time for 2, 4, 8, 16, 32, 64, and 128 processors. For each case, list the corresponding speedup relative to a single processor and the ratio between actual speedup versus ideal speedup (speedup if there was no overhead).

Answer:

If there’s one topic that trips people up (both new and experienced) in the networking industry, it is that of Subnetting.

One of the reasons this happens is that one has to perform (mental) calculations in decimal and also binary. Another reason is that many people have not had enough practice with subnetting.

In this article, we will discuss what Subnetting is, why it came about, its usefulness, and how to do subnetting the proper way. To make this article as practical as possible, we will go through many examples.

Note: While subnetting applies to both IPv4 and IPv6, this article will only focus on IPv4. The same concepts explained here can be applied to IPv6. Moreover, subnetting in IPv6 is more of a want rather than a necessity because of the large address space.

IP address network

For example, any traffic with a destination IP address of 192.168.1.101 will be delivered to PC1, while traffic addressed to 192.168.1.250 will be delivered to SERVER.

Note: This is an oversimplification of things just for understanding sake and refers to Unicast (one-to-one) IPv4 addresses. Traffic sent to Multicast (one-to-many) and Broadcast (one-to-all) IP addresses can be delivered to multiple devices. Also, features like Network Address Translation (NAT) allow one IP address to be shared by multiple devices.

To help your understanding of IP addresses and subnetting, you need to resolve the following fact in your head: Computers think in binary, that is, 0s and 1s. Therefore, even though we see an IP address represented like 192.168.1.250, it is actually just a string of bits – 32 bits in total for IPv4 addresses.

To make them more readable for humans, IPv4 addresses are represented in dotted decimal notation where the 32 bits are divided into 4 blocks of 8 bits (also known as an octet), and each block is converted to a decimal number.

For example, 01110100 in binary is 116 in decimal:

A unicast IPv4 address such as 192.168.1.250 can be divided into two parts: Network portion and Host ID. So what does this mean? Well, IPv4 addresses were originally designed based on classes: Class A to Class E. Multicast addresses are assigned from the Class D range while Class E is reserved for experimental use, leaving us with Class A to C:

Class A: Uses the first 8 bits for the Network portion leaving 24 bits for host IDs. The leftmost bit is set to “0”.

Class B: Uses the first 16 bits for the Network portion leaving 16 bits for host IDs. The two leftmost bits are set to “10”.

Class C: Uses the first 24 bits for the Network portion leaving 8 bits for host IDs. The three leftmost bits are set to “110”.

Note: The range of Class A is actually 1-126 because 0.x.x.x and 127.x.x.x are reserved.

With these classes, a computer/device can look at the first three bits of any IP address and determine what class it belongs to. For example, the 192.168.1.250 IP address clearly falls into the Class C range.

Looking at the Host ID portion of the classes, we can determine how many hosts (or number of individual IP addresses) a network in each class will support. For example, a Class C network will ideally support up to 256 host IDs i.e. from 00000000 (decimal 0) to 11111111 (decimal 255). However, two of these addresses cannot be assigned to hosts because the first (all 0s) represents the network address while the last (all 1s) represents the broadcast address. This leaves us with 254 host IDs. A simple formula to calculate the number of hosts supported

Explanation: Final answer is Start address: 192.168.58.0 + 1 = 192.168.58.1

End address: 192.168.58.16 – 2 = 192.168.58.14

Broadcast address: 192.168.58.16 – 1 = 192.168.58.15

Answer:

For an AND gate, Q would be 0,0,0,1 respectively.

See the reference table below.

Answer:

D. Chain and Sprockets

Explanation:

Chains and sprockets are power transmission tools. The roller chain is connected to a toothed wheel which is the sprocket. The combination provides mechanical power to the wheels of vehicles.

An advantage they possess is their ability to transmit mechanical power over both short and long distances. They have a high degree of efficiency but they require constant lubrication. They also produce noise during operation.

When compared to EMT, IMC (intermediate metal conduit) is a thinner and also have a lighter-weight .

Note that EMT  is one that cannot be threaded and is not set up for strong connections like IMC and RMC.

In regards to residential wiring, IMC is known to be the one that is said to be often and usually limited to service entrance assemblies as well as exposed and it often  runs to and fro.

Therefore, When compared to EMT, IMC (intermediate metal conduit) is a thinner and also have a lighter-weight .

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Answer:

The first symbol is for inserting text and the second for viewing text

Explanation:

Answer:

Nelson proposed a system where copying and linking any text excerpt, image or form was possible.

Explanation:

Ted Nelson is one of the theoretical pioneers of the world wide web who is best known for inventing the concept of hypertext and hypermedia in the 1960s. As one of the early theorists on how a networked world would work.

How I know:

I goggle it.

Answer:

Answer is D

Explanation:

cameras did not use disks until the late 1990s  :D

edit: sorry my previous answer was wrong, I apoligize for the mishap :(

Answer:

The program in python is as follows:

for i in range(0,6):

   for i in range(0,9):

       print(" ",end='')

   print("|",end='')

print()

for i in range(1,61):

   print(i%10,end='')

Explanation:

See attachment for program output format

The next two instructions create a nested for loop

for i in range(0,6):

   for i in range(0,9):

This prints 9 spaces

       print(" ",end='')

This prints a vertical line at the top of the end of the spaces printed

   print("|",end='')

This prints a new line

print()

This iterates from 1 to 60

for i in range(1,61):

This prints 1, 2, 3....9, then 0, 6 times on a straight line

   print(i%10,end='')

Answer:

hello like that

it's in order

Answer:

give each member their own translator and a seprate workspace

sry bout the spelling

Explanation:

Answer:

season 9 episode 23.65 and the bases it 12

Answer:

SSL VPN

Explanation:

Secure Sockets Layer, or SSL VPN, is the second common VPN protocol.

A big plus for SSL VPNs is that they can allow segmented access for users. For example, users can be limited to checking email and accessing shared drives rather than having access to the entire network.

SSL VPNs come in two types, SSL portal and SSL tunnel.

SSL Portal VPNs

SSL Portal VPNs allow a user to securely access the web from a browser once the user logs into the VPN’s online portal using a specified method of authorization.

This type of SSL VPN gets its name because of how the user accesses it – through a single web page, or portal. The page acts as a single gateway to the other services available on the secured network.

SSL Tunnel VPNs

SSL Tunnel VPNs allow the user to not only access the web securely, but to also use applications and other network services that aren’t based on the web.

Due to their sophisticated segmentation capabilities, SSL VPNs often require more skill to implement.

VPNs are not a cure-all

Of course, what you could do is circumvent the entire debate around VPN SSL vs IPSEC. Our Gatekeeper offering is an enhanced alternative to VPN with no client, that still offers two-factor authentication to secure remote access.

Wherever you land between VPN SSL vs IPSEC, of if you join #TeamGatekeeper, having one of these tools to protect web traffic is a great way to help secure information, but it’s not an end-all be-all security solution.

After all, a VPN won’t protect your employees from social engineering attacks such as email phishing.

(hope this helps can i plz brainlist it will make my day :D hehe)

Answer:

The Stability and Growth Pact (SGP) is an agreement, among the 27 member states of the European Union, to facilitate and maintain the stability of the Economic and Monetary Union (EMU). ... The purpose of the pact was to ensure that fiscal discipline would be maintained and enforced in the EMU.

Explanation:

follow me for more

Answer:

Length x Width x Hight

Explanation:

Answer:

Headed by the OSD Records Administrator, the OSD Records and Information Management (RIM) Program is responsible for oversight, implementation of the Federal Records Act within the Offices of the Secretary of Defense and the WHS supported Defense Agencies and Field Activities.

Explanation:

Answer:

Option 4 would be your best answer

Explanation:

The * means multiply

And the / means Divide

Hope this helps :D

Answer:

b and c

Explanation:

sorry if there wrong

Answer: A, B, and C

Explanation:

Answer:

find detailed description of algorithms (direct and iterative methods) in books [8], [3], [24]. We limit ourself to only selected problems and methods which are important in chemical engineering. 1.2.1 Conditioning of a system of linear equations We do not compute accurately because of rounding errors, which affect results of calcu-lations.

Explanation:

Answer:

8

Explanation:

Gear reduction = driven gear teeth / driving gear teeth

First stage reduction :

Driven gear teeth = 36

Driving gear teeth = 12

36 /12 = 3

Second stage reduction :

Driven gear teeth = 60

Driving gear teeth = 12

60 /12 = 5

First stage + second stage

3 + 5 = 8

Answer:

a

Explanation:

Answer:

Archiving data files manages the size of a mailbox for  

✔ local

storage.

Creating an Outlook data file  

✔ protects

data files in storage on a computer.

Explanation:

Because its right.

Answer:

an increase in cloud computing

Explanation:

Answer:

(1). social media

(2). wireless devices

(3). smart phones

Explanation:

The three technologies that have made global communication instant and more effective are social media, wireless devices, and smart phones.

Here,

Social media platforms have revolutionized the way people communicate globally. They allow individuals to connect, share information, and communicate with others in real-time, regardless of geographical location.

Wireless devices, such as laptops, tablets, and smartwatches, have eliminated the need for physical connections like cables and wires. They allow users to access the internet and communicate with others from virtually anywhere with a wireless signal.

Smartphones combine the features of a mobile phone with advanced computing capabilities. They provide instant communication through voice calls, text messages, emails, and various messaging apps.

Smartphones also allow users to access social media platforms and use wireless internet, making global communication more convenient and efficient.

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A feature which is assigned to every (all) network device is: C. MAC address.

MAC address is an abbreviation for media access control address and it can be defined as a unique identifier that is generally assigned by manufacturers to a network interface controller (NIC) of every (all) network device, especially for use as a network address when the device is communicating with other network devices within a network segment.

This ultimately implies that, media access control address (MAC address) is a feature which is assigned to every (all) network device by the manufacturers.

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Answer: MAC Address

Explanation: Took the test and it was right :)

Answer:

Benefits of Virtualization

Reduced capital and operating costs.

Minimized or eliminated downtime.

Increased IT productivity, efficiency, agility and responsiveness.

Faster provisioning of applications and resources.

Greater business continuity and disaster recovery.

Simplified data center management.

Answer:

See picture below.

Answer:

public static void display(int [] arr){

   System.out.print("Arrays: ");

       for(int i =0;i<arr.length;i++){

           System.out.print(arr[i]+" ");

       }

       System.out.println();

   }

public static void displayReverse (int [] arr){

   System.out.print("Arrays in reverse order: ");

       for(int i=arr.length-1;i>=0;i--){

           System.out.print(arr[i]+" ");

       }

       System.out.println();

   }

public static int displaySum (int [] arr){

   System.out.print("Sum: ");

   int sum = 0;

       for(int i =0;i<arr.length;i++){

           sum+=arr[i];

       }

       return sum;

   }

public static void displayLessThan (int [] arr, int num){

       System.out.print("Less than "+num+": ");

       for(int i =0;i<arr.length;i++){

           if(arr[i]<num){

               System.out.print(arr[i]+" ");

           }

       }

       System.out.println();

   }

public static void displayHigherThanAverage  (int [] arr){

       System.out.print("Higher than average: ");

       int sum = 0;

       for(int i =0;i<arr.length;i++){

           sum+=arr[i];

       }

       float average = sum/arr.length;

       for(int i =0;i<arr.length;i++){

           if(arr[i]>average){

               System.out.print(arr[i]+" ");

           }

       }

       System.out.println();

   }

Explanation:

The methods were written in Java. See attachment for explanation where I used comments to explain each lines.

Note that lines that begin with double slash (//) are comments

Answer:

D by using a larger IP address correct

Explanation:

Correct answer I hope this helps you :)