What tool is used to find and organize files on a mac

"Switches break up _______________ domains and routers break up _____________ domains."

mel-nik [20]

Answer:

Switches break up collision domains and routers break up broadcast domains.

Explanation:

Collision domain depicts the part within a network where a collision can happen.
Collision occurs when two hosts transmit data packet at the same time within a network. Theses packets collide and the hosts have to resend the data after some time.
Too many collisions can result in slow traffic speed and can effect network performance.
So switches break up collision domains between the devices on a network and each port in a switch depicts a collision domain. This reduces the chance of packet collisions between the devices or hosts.
When data is to be sent to a host, the switch keeps that data frame and waits for availability of the destination host before sending the data frame.
Moreover full duplex switch mode there is not chance of collision as the transmitting path on one host is the receiving path on other host.

Broadcast domain contains all the hosts that can reach each other at the Data Link layer via broadcast.
Routers break up broadcast domains as routers contain separate broadcast domains for each interface.
Routers do not forward broadcasts from one broadcast domain to other and drop the packet when they detect a broadcast address.

4 0

3 years ago

In a block of addresses we know the IP address of one host is Roll no. Roll no. Roll no. Roll no./20.What is the first address a

lesya [120]

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

7 0

2 years ago

Which of the following rules should be used to keep the appropriate distance between your vehicle and the vehicle in front of yo

S_A_V [24]

I would say two car length rule. I am not sure what the official license rule is or if it has been changed, but originally the rule was 3 seconds usually depending on how fast the car is going. The faster you are going, the longer it takes to stop. So two-car length rule would probably be the best choice. Definitely not A.

8 0

3 years ago

Read 2 more answers

Canada’s energy plan, named __________, makes three governmental agencies accountable for safeguarding Canada’s environment.

stepan [7]

Answer:

Canada launched the national Generation Energy Council of leading Canadians, who proposed principles to the Government of Canada on how to build our energy future. Today, these principles guide government decisions to support Canadian families, businesses, and communities. Together, we are: saving energy powering clean communities.

Explanation:

8 0

2 years ago

Session Hijacking refers to the exploitation of a valid computer session where an attacker takes over a session between two comp

noname [10]

Answer:Weak session ID generation algorithm

Explanation: Session hijacking is the hacking by disguising as the authenticated user and illegally exploit the particular computer session. IP packets are invoked by the disguised attacker into the active session between the legal computer user. It is also called session key.

It gives the hacker to use the data and services of the computer in an unauthorized manner. It arises due to the session of communication are not secure and strong,key used for session is weak etc.

5 0

2 years ago