What do you understand by subnet masking?

What do you understand by subnet masking?
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Answer :

A subnet mask is a screen of numbers used for routing traffic within a subnet. Once a packet has arrived at an organization's gateway or connection point with its unique network number, it can be routed to its destination within the organization's internal gateways using the subnet number. The subnet mask consists of a screen of numbers indicating to the router which numbers it should look at underneath. In a binary mask, for example, a "1" over a number says "Look at the number underneath;" a "0" says "Don't look." Using a mask saves the router having to handle the entire 32 bit address; it can simply look at the bits selected by the mask.
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Related questions

Describe the need and importance of subnet masking. Give an example of subnet mask.

Description : Describe the need and importance of subnet masking. Give an example of subnet mask.

Last Answer : Subnet mask is a 32 bits long address used to distinguish between network address and host address in IP address. Subnet mask is always used with IP address. Subnet mask has ... In binary notation  IP address 11000000.10101000.00000001.00001010  Subnet mask 11111111.11111111.11111111.00000000

Explain following term: (i) Subnet Masking (ii) ARP (iii) FTP (iv) TCP

Description : Explain following term: (i) Subnet Masking (ii) ARP (iii) FTP (iv) TCP

Last Answer : (i) Subnet masking: Subnet mask is a 32 bits long address divided into 4 octets used to distinguish between network address and host address in IP address. It is always used with IP ... to provide a reliable service. Corrupt and lost segments are retransmitted, and duplicate segments are discarded.

Explain what you understand by data encapsulation.

Description : Explain what you understand by data encapsulation.

Last Answer : Each layer in the layered architecture provides service to the layers which are directly above and below it. The outgoing information will travel down through the layers to the lowest layer. While ... to each packet obtained from layer 3 and pass it to layer 1 for physical transmission.

What do you understand by active preventive maintenance?

Description : What do you understand by active preventive maintenance?

Last Answer : Active preventive maintenance includes i) Regular cleaning of the system using cleaning tools & cleaning solutions ii) Preventive maintenance of the system, which are either weekly or monthly.  Weekly ... startup disk Check for updated drivers O.S. updates Cleaning the drivers

Have you been surprised how masking has focused your attention on people’s eyes?

Description : Have you been surprised how masking has focused your attention on people’s eyes?

Last Answer : I’m not surprised but I agree.

Are you/will you be double-masking?

Description : Are you/will you be double-masking?

Last Answer : I'm not sure yet. I haven't heard whether the vaccine works against the new variants. I honestly was hoping that after I get my second shot on Friday, after waiting a couple of weeks, I'd be immune. ... to stop wearing my mask and washing my hands, but I was hoping I wouldn't be as stressed out.

What is masking?

Description : What is masking?

Last Answer : I know exactly what it does, but it is hard for me to describe. Basically if you draw a star shaped mask and you apply it to photo, the only parts of the photo that are visible are inside that star shape. It doesn't actually delete the rest of the photo, it just hides it.

Why interrupt masking is needed of microprocessor?

Description : Why interrupt masking is needed of microprocessor?

Last Answer : Need answer

Is masking tape a conducter or insulator?

Description : Is masking tape a conducter or insulator?

Last Answer : Need answer

What is image masking?

Description : What is image masking?

Last Answer : Image MaskingMasking is the process of hiding some portion of photograph or images. Image masking is used very often to hide the background of an image. Later we can change the background, or let the background remain transparent.

Can I use masking tape to seal my moving boxes?

Description : Can I use masking tape to seal my moving boxes?

Last Answer : I wouldn't use masking tape for moving purposes. Masking tape is usually used for painting, to tape off walls. It's easily removable as to not harm the paint, so it's not ideal for packing boxes. You ... have some packing tape for sale. But if masking tape is all you have, it should work out OK.

The transmitter technique adopted to reduce the noise effect of the preceding question is called A. noise masking B. anitnoise C. noise killing D. preemphasis

Description : The transmitter technique adopted to reduce the noise effect of the preceding question is called A. noise masking B. anitnoise C. noise killing D. preemphasis

Last Answer : D. preemphasis

What do you call the perceptible sound repetition? A. Reverberation B. Echo C. Reflection D. Masking

Description : What do you call the perceptible sound repetition? A. Reverberation B. Echo C. Reflection D. Masking

Last Answer : B. Echo

Calcium is important in skeletal muscle contraction because it (a) binds to troponin to remove the masking of active sites on actin for myosin (b) activates the myosin ATPase by binding to it (c) detaches the myosin head from the actin filament (d) prevents the formation of bonds between the myosin cross bridges and the actin filament.

Description : Calcium is important in skeletal muscle contraction because it (a) binds to troponin to remove the masking of active sites on actin for myosin (b) activates the myosin ATPase by binding to it ... filament (d) prevents the formation of bonds between the myosin cross bridges and the actin filament.

Last Answer : (a) binds to troponin to remove the masking of active sites on actin for myosin

The ability of a single network to span multiple physical networks is known as ______ a. Subnettingb. Masking c. Fragmenting d. Hopping

Description : The ability of a single network to span multiple physical networks is known as ______ a. Subnetting b. Masking c. Fragmenting d. Hopping

Last Answer : a. Subnetting

Define what is masking?

Description : Define what is masking?

Last Answer : Masking is a process in which a given bit pattern is partly extracted into another bit pattern by means of a logical bitwise operation.

What is the difference between masking and non-masking?

Description : What is the difference between masking and non-masking?

Last Answer : Ans-In 8085 processor TRAP is a non maskable interrupt. Whereas RST 7.5 6.5 5.5 intr are maskable interrupts. Maskable means this interrupts can be left without considering during the execution of ... . Non maskable depicts that it has to be taken into account during the execution of the program

Calcium is important in skeletal muscle contraction because it :- (1) binds to troponin to remove the masking of active sites on actin for myosin. (2) activates the myosin ATPase by binding to it. (3) detaches the myosin head from the actin filament. (4) prevents the formation of bonds between the myosin cross bridges and the actin filament.

Description : Calcium is important in skeletal muscle contraction because it :- (1) binds to troponin to remove the masking of active sites on actin for myosin. (2) activates the myosin ATPase by binding to ... filament. (4) prevents the formation of bonds between the myosin cross bridges and the actin filament.

Last Answer : (1) binds to troponin to remove the masking of active sites on actin for myosin.

Can i port forward to my entire subnet ?

Description : Can i port forward to my entire subnet ?

Last Answer : What are you forwarding? A specific port? DHCP dynamicly assigns IPs to all hosts on the subnet? Is assume this is a home network w\ one NAT\router inbetween all computers and a DSL\cable modem ... to a specific 192. I assume you are port forwarding to allow incomming connections on a specific port?

What is a subnet mask ?

Description : What is a subnet mask ?

Last Answer : At least two pieces of information are required for each TCP / IP host. The first is an IP address and the second is a subnet mask. The job of the subnet mask is to identify which bits of the ... default subnet mask is used . In that case the amount of this bit will be determined with subnet mask.

How Do I Solve Custom Subnet Mask Problem 10?

Description : How Do I Solve Custom Subnet Mask Problem 10?

Last Answer : .Hello everyone,Here's my overview:Hello everyone, I seem to have a problem with this custom subnetmasking problem. Number needed usable hosts:60 NetworkAddress:198.100.10.0 I've already figured these: ... 255.255.240 butchecked online and wasn't right). Can someone help me with thisproblem? Thanks.

Why is the subnet mask important in determining the network address?

Description : Why is the subnet mask important in determining the network address?

Last Answer : What is the answer ?

You are designing a network which needs to support 200 users. You don't plan to extend the segment beyond the current number of users. Which subnet mask would best meet your needs? Select the best answer. A. 255.255.0.0 B. 255.255.255.0 C. 255.0.0.0 D. 255.224.0.0 E. 255.255.255.200

Description : You are designing a network which needs to support 200 users. You don't plan to extend the segment beyond the current number of users. Which subnet mask would best meet your needs? Select the best answer. A. 255.255.0.0 B. 255.255.255.0 C. 255.0.0.0 D. 255.224.0.0 E. 255.255.255.200

Last Answer : 255.255.255.0

With anIP address set starting with 150, you currently havesix offices that you are treating as subnets. Plans are in place toopen 10 more officesbefore the end of theyear. What subnet mask should you useto satisfy the needed numberof subnets and maximize thenumberof hosts available at eachsite? A. 192 B. 224 C. 240 D. 248 E. 252

Description : With anIP address set starting with 150, you currently havesix offices that you are treating as subnets. Plans are in place toopen 10 more officesbefore the end of theyear. What subnet mask should you useto ... maximize thenumberof hosts available at eachsite? A. 192 B. 224 C. 240 D. 248 E. 252

Last Answer : 248

You are working with three networks that have the network IDs 192.168.5.0, 192.168.6.0, and192.168.7.0. What subnet mask can you use to combine these addresses intoone? A. 255.255.252.0 B. 225.255.254.0 C. 255.255.255.240 D. 255.255.255.252

Description : You are working with three networks that have the network IDs 192.168.5.0, 192.168.6.0, and192.168.7.0. What subnet mask can you use to combine these addresses intoone? A. 255.255.252.0 B. 225.255.254.0 C. 255.255.255.240 D. 255.255.255.252

Last Answer : 255.255.252.0

On a class B network, how manyhostsare availableat eachsite witha subnet mask of 248? A. 16,382 B. 8,190 C. 4,094 D. 2,046 E. 1,022

Description : On a class B network, how manyhostsare availableat eachsite witha subnet mask of 248? A. 16,382 B. 8,190 C. 4,094 D. 2,046 E. 1,022

Last Answer : 2,046

Which of the following best illustrates the default subnet mask for a class A,B, and C Network? A. 0.0.0.0,0.0.0.1, 0.0.1.1 B. 255.255.255.0, 255.255.0.0,255.0.0.0 C. 255.0.0.0, 255.255.0.0, 255.255.255.0 D. 255.255.0.0, 255.255.255.0,255.255.255.255 E. None of the above

Description : Which of the following best illustrates the default subnet mask for a class A,B, and C Network? A. 0.0.0.0,0.0.0.1, 0.0.1.1 B. 255.255.255.0, 255.255.0.0,255.0.0.0 C. 255.0.0.0, 255.255.0.0, 255.255.255.0 D. 255.255.0.0, 255.255.255.0,255.255.255.255 E. None of the above

Last Answer : 255.0.0.0, 255.255.0.0, 255.255.255.0

You are working with a network thathas the network ID 192.168.10.0. What subnet should you use that supportsup to 25 hosts and a maximum number of subnets? A. 255.255.255.192 B. 255.255.255.224 C. 255.255.255.240 D. 255.255.255.248 E. 255.255.255.252

Description : You are working with a network thathas the network ID 192.168.10.0. What subnet should you use that supportsup to 25 hosts and a maximum number of subnets? A. 255.255.255.192 B. 255.255.255.224 C. 255.255.255.240 D. 255.255.255.248 E. 255.255.255.252

Last Answer : 255.255.255.224

With anIP address of 100, you currently have 80 subnets. What subnet mask should you use to maximize the number of available hosts? A. 192 B. 224 C. 240 D. 248 E. 252

Description : With anIP address of 100, you currently have 80 subnets. What subnet mask should you use to maximize the number of available hosts? A. 192 B. 224 C. 240 D. 248 E. 252

Last Answer : 252

What partof 192.168.10.51 is the Network ID, assuming a default subnet mask? A. 192 B. 192.168.10 C. 0.0.0.5 D. 51 E. None of the above

Description : What partof 192.168.10.51 is the Network ID, assuming a default subnet mask? A. 192 B. 192.168.10 C. 0.0.0.5 D. 51 E. None of the above

Last Answer : 192.168.10

What is the default subnet mask for a class C network? A. 127.0.0.1 B. 255.0.0.0 C. 255.255.0.0 D. 255.255.255.0 E. None of the above

Description : What is the default subnet mask for a class C network? A. 127.0.0.1 B. 255.0.0.0 C. 255.255.0.0 D. 255.255.255.0 E. None of the above

Last Answer : 255.255.255.0

You havea class A network address 10.0.0.0 with 40subnets,but arerequiredto add 60 new subnets very soon. You would like to still allow for the largest possible number of host IDs per subnet. Which subnet mask should youassign? A. 255.240.0.0 B. 255.248.0.0 C. 255.252.0.0 D. 255.254.0.0 E. 255.255.255.255

Description : You havea class A network address 10.0.0.0 with 40subnets,but arerequiredto add 60 new subnets very soon. You would like to still allow for the largest possible number of host IDs per subnet. Which subnet mask should youassign? A. ... B. 255.248.0.0 C. 255.252.0.0 D. 255.254.0.0 E. 255.255.255.255

Last Answer : 255.254.0.0

If a Company require 60 hosts then What is the best possible subnet mask? a. 255.255.255.0 b. 255.255.255.192 c. 255.255.225.224 d. 225.225.255.240

Description : If a Company require 60 hosts then What is the best possible subnet mask? a. 255.255.255.0 b. 255.255.255.192 c. 255.255.225.224 d. 225.225.255.240

Last Answer : b. 255.255.255.192

A subnet has been assigned a subnet mask of 255.255.255.192. What is the maximum number of hosts that can belong to this subnet? a. 14 b. 30 c. 62 d. 126

Description : A subnet has been assigned a subnet mask of 255.255.255.192. What is the maximum number of hosts that can belong to this subnet? a. 14 b. 30 c. 62 d. 126

Last Answer : c. 62

Consider the given network implementation scenario. For the given classful NID 199.10.20.0/24, the requirement is to create 13 subnets. With given details, find the range of first and last valid IP in 15th subnet. a. 199.10.20.208 to 199.10.20.222 b. 199.10.20.225 to 199.10.20.238 c. 199.10.20.193 to 199.10.20.206 d. Not of these

Description : Consider the given network implementation scenario. For the given classful NID 199.10.20.0/24, the requirement is to create 13 subnets. With given details, find the range of first and last valid IP in 15th subnet. a. ... .20.225 to 199.10.20.238 c. 199.10.20.193 to 199.10.20.206 d. Not of these

Last Answer : a. A Only

The address of a class B host is to be split into subnets with a 6-bit subnet number. What is the maximum number of subnets and the maximum number of hosts in each subnet? a. 62 subnets and 262142 hosts. b. 64 subnets and 262142 hosts. c. 62 subnets and 1022 hosts. d. 64 subnets and 1024 hosts

Description : The address of a class B host is to be split into subnets with a 6-bit subnet number. What is the maximum number of subnets and the maximum number of hosts in each subnet? a. 62 subnets and 262142 hosts. b. 64 subnets and 262142 hosts. c. 62 subnets and 1022 hosts. d. 64 subnets and 1024 hosts

Last Answer : c. 62 subnets and 1022 hosts.

What is IP class and number of sub- networks if the subnet mask is 255.224.0.0? a. Class A, 3 b. Class A, 8 c. Class B, 3 d. Class B, 32

Description : What is IP class and number of sub- networks if the subnet mask is 255.224.0.0? a. Class A, 3 b. Class A, 8 c. Class B, 3 d. Class B, 32

Last Answer : b. Class A, 8

There are two types of designs for communication subnets: they are ………… A. Point-to-Point channels and Broadcast channels B. packet-switched subnet and store-and-forward C. Multicasting and Broadcasting D. Point-to-Point channels and store-and-forward

Description : There are two types of designs for communication subnets: they are ………… A. Point-to-Point channels and Broadcast channels B. packet-switched subnet and store-and-forward C. Multicasting and Broadcasting D. Point-to-Point channels and store-and-forward

Last Answer : A. Point-to-Point channels and Broadcast channels

In most Wide Area Networks, the subnet consists of two distinct components: which are they? A. Transmission Lines and Switching Elements. B. host and subnet C. Transmission Lines and host D. subnet and Switching Elements.

Description : In most Wide Area Networks, the subnet consists of two distinct components: which are they? A. Transmission Lines and Switching Elements. B. host and subnet C. Transmission Lines and host D. subnet and Switching Elements.

Last Answer : A. Transmission Lines and Switching Elements.

The subnet gets increasingly loaded with packets causing increase in delay in the delivery of packets, which can lead to more retransmission, and ultimately increasing more and more traffic. This is a concept called as _________ A. blockage B. Traffic jam. C. Congestion D. both a and b

Description : The subnet gets increasingly loaded with packets causing increase in delay in the delivery of packets, which can lead to more retransmission, and ultimately increasing more and more traffic. This is a concept called as _________ A. blockage B. Traffic jam. C. Congestion D. both a and b

Last Answer : C. Congestion

The _______ layer is the topmost layer in the subnet. A. Network B. application C. transport D. physical

Description : The _______ layer is the topmost layer in the subnet. A. Network B. application C. transport D. physical

Last Answer : A. Network

The Switching Elements are also called as ………. A. host B. subnet C. Interface Message Processors (IMPs) D. both a and b

Description : The Switching Elements are also called as ………. A. host B. subnet C. Interface Message Processors (IMPs) D. both a and b

Last Answer : C. Interface Message Processors (IMPs)

In datagram subnet new route is chosen ………………… (A) for every packet sent (B) for first and last packet sent (C) only for the first packet (D) for the packet which is not transmitted

Description : In datagram subnet new route is chosen ………………… (A) for every packet sent (B) for first and last packet sent (C) only for the first packet (D) for the packet which is not transmitted

Last Answer : (A) for every packet sent

Which among the following definitions is correct: a) Address - The unique number ID assigned to one host or interface in a network b) Subnet - A portion of a network sharing a particular subnet address c) Subnet mask - A 32 bit combination used to describe which portion of an address refers to the subset and which part refers to the host d) Interface - A network connection e) None of These f) All of the Above

Description : Which among the following definitions is correct: a) Address - The unique number ID assigned to one host or interface in a network b) Subnet - A portion of a network sharing a particular subnet address c) ... to the host d) Interface - A network connection e) None of These f) All of the Above

Last Answer : f) All of the Above

Which among the following definitions is correct: a) Address - The unique number ID assigned to one host or interface in a network b) Subnet - A portion of a network sharing a particular subnet addressc) Subnet mask - A 32 bit combination used to describe which portion of an address refers to thesubset and which part refers to the hostd) Interface - A network connectione) None of Thesef) All of the Above

Description : Which among the following definitions is correct: a) Address - The unique number ID assigned to one host or interface in a network b) Subnet - A portion of a network sharing a particular subnet address c) ... to the host d) Interface - A network connection e) None of These f) All of the Above

Last Answer : f) All of the Above

Your company receives internet access through a network or a gateway server. Which of the following devices is best suited to protect resources and subnet your LAN directly on the network server? 1) DSL modem 2) A multi-homed firewall 3) VLAN 4) A brouter that acts both as a bridge and a router

Description : Your company receives internet access through a network or a gateway server. Which of the following devices is best suited to protect resources and subnet your LAN directly on the network server? 1) DSL modem 2) A multi-homed firewall 3) VLAN 4) A brouter that acts both as a bridge and a router

Last Answer : 2) A multi-homed firewall

Mention what are the networking options used in OpenStack a. Flat Network Manager: IP addresses for VM instances are fetched from the subnet, and then injected into the image on launch b. Flat DHCP Network Manager: IP addresses for VM instances are fetched from the subnet specified by the network administrator c. VLAN Network Manager: Compute creates a VLAN and bridge; DHCP server is started for each VLAN to pass out IP addresses to VM instances. d. All of the above

Description : Mention what are the networking options used in OpenStack a. Flat Network Manager: IP addresses for VM instances are fetched from the subnet, and then injected into the image on launch b. Flat DHCP Network ... is started for each VLAN to pass out IP addresses to VM instances. d. All of the above

Last Answer : All of the above

Mention what are the networking options used in OpenStack a. Flat Network Manager: IP addresses for VM instances are fetched from the subnet, and then injected into the image on launch b. Flat DHCP Network Manager: IP addresses for VM instances are fetched from the subnet specified by the network administrator c. VLAN Network Manager: Compute creates a VLAN and bridge; DHCP server is started for each VLAN to pass out IP addresses to VM instances. d. All of the above

Description : Mention what are the networking options used in OpenStack a. Flat Network Manager: IP addresses for VM instances are fetched from the subnet, and then injected into the image on launch b. Flat DHCP Network ... is started for each VLAN to pass out IP addresses to VM instances. d. All of the above

Last Answer : All of the above

Your company receives internet access through a network or a gateway server. Which of the following devices is best suited to protect resources and subnet your LAN directly on the network server? 1 DSL modem 2 A multi-homed firewall 3 VLAN 4 A brouter that acts both as a bridge and a router

Description : Your company receives internet access through a network or a gateway server. Which of the following devices is best suited to protect resources and subnet your LAN directly on the network server? 1 DSL modem 2 A multi-homed firewall 3 VLAN 4 A brouter that acts both as a bridge and a router

Last Answer : 2 A multi-homed firewall

You are given the IP address of 172.16.2.160 with a subnet mask of 255.255.0.0. What is the network address in binary? * 10101100 00010000 * 00000010 10100000 * 10101100 00000000 * 11100000 11110000

Description : You are given the IP address of 172.16.2.160 with a subnet mask of 255.255.0.0. What is the network address in binary? * 10101100 00010000 * 00000010 10100000 * 10101100 00000000 * 11100000 11110000

Last Answer : Correct answer: A To find the network address, convert the IP address to binary-10101100 000100000 00000010 10100000-then ANDed it with the subnet mask-11111111 11111111 00000000 00000000. The rest is ... that the class of an address can be determined by the numerical value of the first octet