Network + : Questions Missed Ch1-ch5

In half-duplex communication, a device can either send communication or receive communication, but it cannot do both at the same time.

Transmits digital signals using light impulses

A proxy sever can provide many functions. A proxy server can use a caching engine so repeated access request for web information would accelerate repeated access for users, and they can also limit the availability of websites.

The FCS can detect frames in the sequence by calculating the cyclic redundancy check (CRC), which verifies that all the bits in the frame are unchanged.

The 802.3 standard, commonly associated with Ethernet, specifies the media-access method used by Ethernet, which is known as Carrier Sense Multiple Access with Collision Detection. (CSMA/CD).

A MAC, or hardware, address is a 48-bit (6-byte) address written in hexadecimal format.

A switch is typically just a Layer 2 device segmenting the network by using MAC addresses. However, some higher-end switches can provide Layer 3 services.

DNS translates human names to IP addresses for routing your packet through the Internet. Hosts can receive the IP address of this DNS server and then resolve host names to IP addresses.

A rolled cable or console cable would be used to connect a host to a router console serial communication (com) port

If the remote server is busy or does not respond to your web browser request, this is an Application layer problem.

The encapsulation order is data, segment, frame, packet, bits

Flow control allows the receiving device to control the pace of the transmitting device so the receiving device's buffer does not overflow.

A modem is a device that modulates digital data onto an analog carrier for transmission over an analog medium and then demodulates from the analog carrier to a digital signal again at the receiving end. Therefore, traditional (POTS), DSL, and cable are all common types of modems. The NIC is the expansion card you install in your computer to connect, or interface, your computer to the network.

UTP is commonly used in twisted-pair Ethernet like 10Base-T, 100Base-TX, 1000Base-TX, and so on.

On an Ethernet Network, the MAC address (hardware address) is used for one host to communicate with another.

A 10GBase-LR implementation can go a distance of up to 6 miles.

A 586B is a crossover cable and this cable uses two pairs of wires.

A 10GBase-SR cable can have a maximum distance of 990 feet (302 meters)

A load balancer uses a little trickery and sends incoming packets to one or more machines that are hidden behind a single IP address. Modern load-balancing routers can use different rules to make decisions about where to route traffic, which can be based on least load, fastest response times, ore simply balancing requests.

Please review conversion chart!

Bridges and switches break up collision domains, which allow more bandwidth for users.

The common types of flow control are buffering, windowing, and congestion avoidance.