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Computer Networking
Computer networks are collections of computers which are connected together in order to communicate and transfer information. Questions about computer networks, networking protocols, and how to set them up belong here.
18,810 Questions
Several reasons to divide a network into subnets?
Networks are divided into smaller subnets to reduce the size of broadcast domains, but mainly for administrative purposes - so you can control who has access to what, for example.
Networks are divided into smaller subnets to reduce the size of broadcast domains, but mainly for administrative purposes - so you can control who has access to what, for example.
Networks are divided into smaller subnets to reduce the size of broadcast domains, but mainly for administrative purposes - so you can control who has access to what, for example.
Networks are divided into smaller subnets to reduce the size of broadcast domains, but mainly for administrative purposes - so you can control who has access to what, for example.
NOS
Can a new IP addressing scheme increase the number of available IP addresses?
Yes and that is called IPV6
What can the user do from the command prompt Router config line?
Configure one of the physical or virtual lines.
What is the Example of denial of service attacks?
One way would be to make call after call in an attempt to make all circuits busy. This type of attack is called a denial of service
The technology is used by private network ranges that has extended the useful life of Ipv4 addressing and slowed the adoption rate of Ipv6 is NAT . NAT is short for network address translation. NAT provides mapping between private and universal addresses.
Which types of stores sell coaxial cable connectors?
You can get coaxial cable connectors at a lot of retail stores, such as Best Buy, Wal-Mart, Home Depot & Target. You can even order them online from sites like Amazon, Ebay & Overstock. You can always ask your local cable technician to leave you a handful for free, if he is kind enough, on his next visit to your home.
Why would you need a commerce server host?
Not everyone has the level of programmer and IT skills needed for server management, so commerce server hosts can handle the heavy load of e-commerce without the required knowledge.
Where is the Chris King hub located?
Chris King Precision Components makes Chris King hubs in nine different colors with a 5-year warranty. They are located in Portland, Oregon. They have a well-earned reputation in the marketplace and are a favorite of shop mechanics.
What are the sizes of cables used for residential buildings?
For the residential building using the following three types of cables
1. 1/18 cable for light, fan and other 5ams points.
2. 3/20 cable for Mixer, grinder and other 15 Am's points.
3. 7/20 cable for A/C, Oven, Heater and other equivalent points
What router is best to use for travel?
There are a range of specifically designed travel routers, most of which can fit easily in your pocket and plug into the wall socket of your hotel room like an air freshener. Linksys is a trusted brand.
How can an IP address for a network device be assigned to a particular network?
Router(config)# hostname Admin
Admin(config)# enable secret cangetin
Admin(config)# interface fa0/1
Admin(config-if)#ip address 192.168.1.22 255.255.255.248
Router(config)# hostname Admin
Admin(config)# enable password cangetin
Admin(config)# interface fa0/1
Admin(config-if)# ip address 192.168.1.22 255.255.255.248
Router(config)# hostname Admin
Admin(config)# enable secret cangetin
Admin(config)# interface fa0/0
Admin(config-if)# ip address 192.168.1.22 255.255.255.248
Router(config)# hostname Admin
Admin(config)# enable password cangetin
Admin(config)# interface fa0/0
Admin(config-if)# ip address 192.168.1.22 255.255.255.248
The address resolution protocol (arp) is a protocol used by theInternet Protocol (IP) , specifically IPv4, to map IP network addresses to the hardware addresses used by a data link protocol. The protocol operates below the network layer as a part of the interface between the OSI network and OSI link layer. It is used when IPv4 is used over Ethernet.
There are four types of arp messages that may be sent by the arp protocol. These are identified by four values in the "operation" field of an arp message. The types of message are:
- ARP request
- ARP reply
- RARP request
- RARP reply
If a host with the IPv4 address 10.10.10.123 and MAC address 00:09:58:D8:11:22 needs to send a packet to another host with the IP address 10.10.10.140, but does not have its MAC address, then the host sends an ARP request to resolve the unknown address.
How much time in a Bluetooth one-slot frame is used for the hopping mechanism?
1) one-slot frame in the Bluetooth transmitter hops is between 791-MHz wide channels with 1600 hops per second.and other hand, 802.11b/g uses the listen-before-talk mechanism.
2) in the baseband layer frame can be of threetypes:
One-slot,
Three-slot,
Five- slot.
A slot is 625 microsecond in a one-slot frame exchange,259 microsecond is needed for hopping and control mechanisms.
A three-slot frame occupies three slots, since259 microsecond is used for hopping, the length of the frame is 3x625 - 259 or 1616 microsecond or 1616 bits . A device that uses athree-slot frame remains at the same hop for three slots. Eventhough only one hop numberis used, three hop numbers are consumed.That means the hop number for each frame is equal to the first slotof the frame.
A five-slot frame also uses 259 bits for hopping, whichmeans that the length of the frame is 5 x 625 - 259, or 2866,bits.
In the below figure, HEADER information is follows bysecond figure
Where you do use bw and cw cable gland?
Both Gland are used for Armoured UG Cables (Cu/ Al).BW gland is Indoor gland and those are using for common purposes. But CW glands are Double compressed and are using at outdoor purposes, pump rooms, Chiller rooms etc. In addition CW glands are longer than BW glands.
@ravindranps
Is a Physical address your 911 address?
Your physical address is the MAC (Media Access Control) address that is burned into the network interface card (NIC). That address is unique and is used to find devices within a LAN.
Convert the subnet mask to binary: 11111111.11111111.11110000.00000000
The zeroes tell you which bytes indicate the host; in this case, 12 zeroes allow for 212 = 4096 different IP addresses within the subnet. Of these, two (the first and the last) are unusable for a host, so you have a maximum of 4094 hosts.
What is scrambling techniques in the encoding?
8
Scrambling Techniques (1)
•
Use scrambling to replace se
quences that would produce
constant voltage
•
These filling sequences must:
o
produce enough transitions to sync
o
be recognized by receiver
& replaced with original
o
be same length as original
•
Design goals
o
have no dc component
o
have no long sequences of zero level line signal
o
have no reduction in data rate
o
give error detection capability
What are the advantages of using ipsec tunnel mode compared to ipsec transport mode?
it protects against traffic analysis
the whole datagram
end systems do not need to be modified to gain ip security
Why do companies outsource reengineering?
Key reasons companies outsource BPR are: they are able to negotiate and control costs; it frees up in-house resources for other purposes; they can secure resources not available internally; efforts may be accelerated through the use of experts.
How do you address two doctors with the same last name at the same address?
Drs Name and Name e.g Drs Smith and Smith
Federal Information Processing Standards (FIPS) is used to establish acceptable methods.
