Networking

Question 1

What is a proxy server?

Answer 1

A computer that functions as an intermediary between a web browser and the internet. Improves web performance by caching webpage’s. When a browser requests a page that is cached on the proxy server the proxy server supply’s the webpage instead of the web.

Question 2

What is a service proxy?

Answer 2

The client side proxy for a service. The service proxy enables applications to send and receive messages over a channel as method calls.

Question 3

What are the different networking cables?

Answer 3

Coaxial, Twisted Pair, Fiber Optics

Question 4

What is the transfer rate of Coax cable?

Answer 4

max 10mb a second

Question 5

What is the transfer rate of Twisted Pair cable?

Answer 5

Cat 3 -10mb
Cat 5 - 100mb
Cat 5e - 1Gb
Cat 6 - 1GB - 10GB

Question 6

What are some network devices?

Answer 6

• Cables
• Network Interface Card (NIC)
• Switches
• Routers

Question 7

Explain what a network interface card is?

Answer 7

Installed in the computer and can have mulitiple ports taking a twisted pair (rj-45) cable or wifi card

Is a computer hardware component that connects a computer to a computer network.

Question 8

What is a network switch?

Answer 8

Is a computer networking device that connects devices together on a computer network, by using packet switching to receive, process and forward data to the destination device

Question 9

What is a network router?

Answer 9

Is a networking device that forwards data packets between computer networks. Routers perform the “traffic directing” functions on the Internet

Question 10

What are network protocols?

Answer 10

Are formal standards and policies comprised of rules, procedures and formats that define communication between two or more devices over a network. Network protocols govern the end-to-end processes of timely, secure and managed data or network communication.

Question 11

What are common protocols?

Answer 11

• Ethernet
• TCP/IP
• ARP
• HTTP

Question 12

What is TCP/IP?

Answer 12

TCP/IP (Transmission Control Protocol/Internet Protocol) is the basic communication language or protocol of the Internet. It can also be used as a communications protocol in a private network (either an intranet or an extranet).

Question 13

What is Ethernet Protocol?

Answer 13

Ethernet/IP (Ethernet Industrial Protocol) is a network communication standard capable of handling large amounts of data at speeds of 10 Mbps or 100 Mbps, and at up to 1500 bytes per packet. The specification uses an open protocol at the application layer. It is especially popular for control applications.

Question 14

What is HTTP?

Answer 14

Hyper Text Transfer Protocol Secure (HTTPS) is the secure version of HTTP, the protocol over which data is sent between your browser and the website that you are connected to.

Question 15

What is ARP?

Answer 15

Address resolution protocol (arp) is a protocol used by the Internet Protocol (IP) [RFC826], specifically IPv4, to map IP network addresses to the hardware addresses used by a data link protocol.

Question 16

What is a network port?

Answer 16

Is a process-specific or an application-specific software construct serving as a communication endpoint, which is used by the Transport Layer protocols of Internet Protocol suite, such as User Diagram Protocol (UDP) and Transmission Control Protocol (TCP)

Question 17

What is DNS?

Answer 17

Domain name server, allows pc to translate a name into an ip address

Question 18

What is DHCP server?

Answer 18

Dynamic Host Configuration Protocol (DHCP) is a network protocol that enables a server to automatically assign an IP address to a computer from a defined range of numbers (i.e., a scope) configured for a given network.

Question 19

What is subnet?

Answer 19

A portion of a network that shares a common address component.

Question 20

What is a subnet mask?

Answer 20

A Subnet mask is a 32-bit number that masks an IP address, and divides the IP address into network address and host address.