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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
Which type of network topology allows for the most direct connections between computers?
Star topolohy.
The OSI model acts as a standard in design of computer networks. It consists of total seven layers.
How do you identify a class of IP address and its corresponding subnet mask?
Look at the first octet value and check the corresponding range.
1-126 class A, subnet mask 255.0.0.0
128-191 class B, subnet mask 255.255.0.0
192-223 class C, subnet mask 255.255.255.0
172.17
120 days
What intervals do DHCP clients use to perform lease renewals?
renewal time value-after 50 percent of the lease time is expired the DHCP client attempts to renew its lease with the DHCP server that issued the IP address. This renewal time value is referred to as T1
Binding time is value- after 87.5 percent of the lease time has expired the DHCP client attempts to renew it's lease again if unsuccessful, it initiates a DHCPDiscover broadcast request to receive an IP address frt om any DHCP server on its network. this Binding time value is referred to as T 2
Which computer initiated the http session?
The user computer initiates it by sending the request over some random protocol to the http server, which responds by sending requested information over port :80 eq the http protocol to the user computer.
255: 1111_1111
5: 0000_0101
1: 0000_0001
2: 0000_0010
Source IP address: 10.10.5.1
Subnet mask: 255.255.255.0
Subnet: 10.10.5.0 (host subnet)
Destination IP address: 10.10.5.2
Subnet mask: 255.255.255.0
Subnet: 10.10.5.0 (destination subnet)
The destination subnet address for 10.10.5.0 which is the same subnet as the host. Therefore, the packet stays in the LAN.
Which routing algorithm does EIGRP use to calculate the best path to a destination within a network?
DUAL
How would you troubleshoot the problem if you suspect that a router's LAN gateway is down?
You can use either or both ping/tracert.
The term workstation is generally reserved for computers that are designated to have many people use them, or a computer used as an access point to a group of servers.
What are the advantages of using CDMA for cellular network?
CDMA is Code-Division Multiple Access abbreviation, full known as Code Division Multiple Access, is a more advanced digital interface technology, which is characterized by a high frequency of utilization, mobile low power consumption, good quality voice calls. 2. Compared with GSM phones, CDMA mobile phone has the following advantages: First, the transmission power is extremely small, so conversation is not only less radiation, but also longer battery life mobile phones.
Second, the use of advanced soft-switching technology allows mobile phone is not GSM phones are dropped.
Third, better call quality, almost no noise when making a call, in the case of large background noise, you can also get a better call quality.
Fourth, a high put-through rate. As military interference from CDMA systems, and the signal occupy the entire band, almost an ordinary narrow-band modulation efficiency of seven times, so for the same bandwidth, CDMA system is the GSM system capacity of 4 to 5 times the extent of its mesh-plug a significant decrease in Therefore, uptake rates are much higher. 3. Ordinary GSM and analog mobile phone power 600 milliwatts under the general control, while the CDMA system, the maximum is only 200 mW transmit power, general power can be controlled at 0:00 call a few milliwatts, its radiation is negligible, there is no health adverse effects. As the base station and mobile transmit power reduction, so handset talk-time will be greatly extended battery life phone will also be extended to protect the environment played a role, it is called the "green phone."
Turn on the feature, if available on your computer's OS and your network router/gateway/firewall. :)
Google (search) "UpNP" along with your OS and then again with your router/gateway.
SSH
Two
A device, like a tape recorder, that reads data from and writes it onto a tape. Tape drives have data capacities of anywhere from a few hundred kilobytes to several gigabytes. Their transfer speeds also vary considerably. Fast tape drives can transfer as much as 20MB (megabytes) per second. The disadvantage of tape drives is that they are sequential-access devices, which means that to read any particular block of data, you need to read all the preceding blocks. This makes them much too slow for general-purpose storage operations. However, they are the least expensive media for making backups. A device, like a tape recorder, that reads data from and writes it onto a tape. Tape drives have data capacities of anywhere from a few hundred kilobytes to several gigabytes. Their transfer speeds also vary considerably. Fast tape drives can transfer as much as 20MB (megabytes) per second. The disadvantage of tape drives is that they are sequential-access devices, which means that to read any particular block of data, you need to read all the preceding blocks. This makes them much too slow for general-purpose storage operations. However, they are the least expensive media for making backups.
What is a wireless man and how does it differ from other types of network connections?
A wireless man is a type of network connection that uses wireless technology to connect devices within a specific geographical area, such as a city or campus. It differs from other types of network connections, like wired connections or wireless LANs, in that it typically covers a larger area and allows for greater mobility and flexibility in connecting devices.
What are the installation steps for an Ethernet wall box in a home network setup?
To install an Ethernet wall box in a home network setup, follow these steps:
- Choose a suitable location on the wall for the Ethernet wall box.
- Use a stud finder to locate a stud in the wall to securely mount the box.
- Cut a hole in the wall using a drywall saw for the box to fit in.
- Insert the Ethernet cables through the hole and connect them to the wall box.
- Securely mount the wall box to the wall using screws.
- Test the connection to ensure it is working properly.
These steps will help you set up an Ethernet wall box in your home network.
How can I effectively hide Ethernet cables in my home or office?
To effectively hide Ethernet cables in your home or office, you can use cable management solutions such as cable raceways, cable clips, or cable sleeves to conceal the cables along walls, baseboards, or under carpets. You can also consider running the cables through walls or ceilings using cable conduits for a more seamless look.
To effectively incorporate fiber optic cable into your home network for faster and more reliable connectivity, you can start by installing fiber optic cables between your devices and a fiber optic modem or router. This will allow for high-speed data transmission over longer distances without signal degradation. Additionally, ensure that your devices are compatible with fiber optic technology and consider hiring a professional to help with the installation process for optimal performance.
