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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 of the following allows the transmission of telephone calls over computer networks?
Telephone conversations carried over the Internet or local networks is commonly transmitted through a protocol known as Voice over Internet Protocol, often abbreviated as VOIP or VoIP.
What does the transport layer use?
In a standard networking protocol stack, the transport layer provides reliable transfer, fragmentation and de-fragmentation (when necessary), error detection and (within limits) recovery. Being located between the network layer (3) and the session layer (5) within the OSI network model, the transport layer uses services of both adjacent layers to facilitate uplink and downlink of the respective protocol data units.
Many networking protocols do not strictly follow the OSI networking model, and may thus employ a different interpretation of transport layer.
How easy is it for someone to hack into your anti-viruis?
Many a times have I seen this question pop up. Actually, it is pretty hard for someone to hack into your antivirus without you noticing, because the antivirus scans itself too to make sure its not infected either. If someone tries to hack into your antivirus, a message will pop up from it saying a program has been infected.
What benefits does of a network administrator configures the switch as an HTTP server in new switch?
This allows web-based configuration tools to be used with the switch.
By modifying the NIC properties through the operating system
By modifying the NIC's EEPROM settings using its configuration utility
todo depende de tu tarjeta
What are the differents input devices of a computer?
Input devices that are commonly used on computers include mice, keyboards, scanners, joysticks and trackballs. Computer hardware is made up of input, output, processor and storage.
Ethernet adapter is used to connect to the internet, hard drive is used for storage of data, and the video card is used for video processing.
Difference difference between Bridge and Gateway?
Bridge is a interface between two or more separate collision domains (limits broadcast to devices connected onto that port only). While Gateway is exit or entrance point to a network and performs changes in protocols if required for e.g. DSL Broadband router connection.gateway may have protocol translators but bridge can not.
Networks and how they are used in business?
A group of computer interconnected via a cable or wireless computers and peripherals that are capable of sharing software and hardware resources between other computers.
How Do you Get Rid Of The Access Denied policy denied error?
This is because your company uses a software that blocks certain websites set by network administrator..
What problems will you encounter if you delete the PATH variable?
PATH is a system variable used by the "shell" to determine where to find programs that are executable. This variable exists in similar forms on both Windows and Linux operating systems (and other related or similarly-designed systems). Removing this variable will not specifically stop the graphical user interface for the system from working correctly, but it will interfere with the execution of "shell scripts", users that attempt to use the command line interface (terminal) and programs that depend on the shell to execute child processes.
Mutual Authentication
full mesh WAN
SONET Specifies framing and multicomplexing at the physical layer?
(True) SONET Specifies framing and multicomplexing at the physical layer of the OSI model.
In what circumstances would a network designer consider using wireless transmission media?
Wireless transmission is used when it is cheaper to install than wired cables, if
portability is a major requirement, or when it is impractical or impossible to install
cables
How safe to run desktop remote access?
Most of the time, yes. Remote Desktop is used very often, mainly by IT personnel that need remote access to other servers (and sometimes PCs). Otherwise, they would have to go inside the computer room each time they wanted to perform their tasks.
If you are thinking about turning on Remote Desktop access on your Windows PC, that is a little different. By turning it on, you are giving someone else the opportunity to access your PC remotely. Making sure you have a very good login/password scheme will help from people breaking in, but normally you do not want Remote Desktop turned on unless you know the people that would access it.
What kind of IP addressing is needed to prepare a computer to serve up remote desk top?
The settings below is the most simplistic network configuration required for two devices to communicate with each other on an IPv4 TCP/IP network, assuming that IP addresses 10.1.1.11 and 10.1.1.12 are available for use:
Device-A
IP: 10.1.1.11
Subnet Mask: 255.255.255.0
Device-B
IP: 10.1.1.12
Subnet Mask: 255.255.255.0
This will put both devices on the same subnet which will allow them to communicate with each other. You can set the .11 and/or .12 number to any unused IP address.
the port is disabled
How much does an ip scanner cost?
That depends on what brand makes the ip scanner. If you go with a nicer brand it's going to be like 80 bucks for one. They could be as cheap as 50 dollars though.
Which is known as a DHCP client first attempts to reacquire its lease at half the lease time?
DHCP lease
BIOS settings are irrelevant to Linux, except for the initial booting where the BIOS loads the bootloader from a medium, which in turn loads the Linux kernel. The only thing the kernel ever needs from the BIOS after that is to provide power management functions (ACPI). Thus, all settings not related to either booting or power management are ignored.
