small office - home office
network of networks
network term for device that sends and receives messages directly across the network
with a shared peripheral, who is responsible for sharing across the network
used to interconnect hosts
will determine if a host is a client, a server, or both
the term for hosts that share information, like email
internet explorer is considered this type of software
can a computer with server software installed provide services simultaneously to 1 or many clients?
peer to peer
network that has computers that function as both servers and clients at the same time
type of topology uses icons to show where the devices are in the NW
type of topology groups devices by how they use the network
what is the pathway over which messages travel from source to destination called?
what is another word for communication rules?
the process of converting thoughts into the language, symbols, or sounds, for transmission
sending host convert messages to this before it is sent over the network
Which hosts decodes signals to interpret a message?
used to describe the process of placing one message format into another format so that the message can be delivered across the appropriate medium
what happens to frames that are too long or short?
used by source and destination hosts to negotiate correct timing for successful communication
like talking on the phone one person to one person
type of message sent to all hosts at the same time
most common set of protocols used on local wired networks - the "unofficial" networking standard protocol
the ethernet standard
speed in mpbs - 100 megabit
what does the 100 mean when referencing the 100BASE-T ethernet standard?
address that is burned into the NIC card - used in an ethernet frame header
another name for protocol data units (pdu's)
frame check sequence
in an ethernet frame, what detects transmission errors?
not processed by receiving host
what will happen to a frame that is 23 bytes?
what type of message is sent to all hosts in a NW?
what layer interconnects the smaller, local networks?
internet protocol (IP)
addressing scheme that identifies the local host
where the host is located
required for computer to communicate with heirarchical network
the purpose of logical addresses in an IP network
another name for IP address
local network/individual host
two things that an IP address identifies
used to determine if traffic should remain local or moved up through the network?
what part of the IP address do all devices do all devices within a single access layer share?
hub or switch
which two networking devices are used to connect hosts to the access layer?
usually the distribution layer device
transport data quickly
the main goal of the core layer
type of cable is typical for a point to point cable
all other ports
a hub receives a message on one port. Who does it send it to?
what device accepts messages only addressed to the correct MAC address?
messages become garbled/unreadable
what happens if two hosts try to send a message at the same time through a hub?
area of the network where a host receives a garbled message
can a switch forward a message to a specific host?
the address the switch checks for in its MAC table
new circuit for every new conversation
when using a switch, allows many conversations to occur at the same time without causing collisions
when a switch receives a frame addressed to a a new host that is not yet in the mac address table
every port on a switch is considered this
how many destination MAC addresses can a message contain?
unique mac address
who receives broadcast
the broadcast mac address in hexadecimal notation
another name for a local network
what address does a NIC read?
address resolution (ARP)
what protocol does sending host use to find a MAC address on a LAN if it knows the IP address?
3 step process
what does a host do when using ARP, recieves a MAC address?
the _____ can filter incoming and outgoing traffic for security and traffic management
what do distribution layer devices connect
the technical term for decode
IP address of destination and source host
what is inside the router packet?
the part of the IP address routers read
what table does a router use to make decisions on where a data packet is to be sent
what is the process of forwarding the packets towards the destination
do routers forward broadcast?
default gateway address
the address of the router interface connected to the same local network as the source host
device that routes packets between networks
messages cannot be delivered
if default gateway is configured incorrectly on the host, what is the impact on communications
address of networks and best path
two things maintained in a routing table
dynamically updated of manually entered
two ways entries can be made in a routing table
what does a router do with a packet if it cannot determine where to forward a message?
if a router receives a packet that it doesn't know how to forward, this type of route must be configured to prevent dropping
MAC address of connected router
if the router must forward a packet to another router, what address will it read?
the private LAN that belongs to an organization
device that has multifunction capabilities like a router with switching functionality and a wireless access point
must replace whole device
what does "single point of failure" mean if your mutlifunction lynksys router breaks?
integrated services router
device that should have all network IP addresses of the hosts attached to the ports the same
will display the current IP configuration in MS windows
what is the first measurement of the network called?
in WINXP, is simple file sharing enabled?
map a drive
what is it called when you have access to a remote resource and the host treats it like it's locally connected?
like a telephone uses it's own network to communicate
capable of delivering voice, data etc over the same communication channel or network structure
examples are personal computers and network attached printers - end user device
don't communicate directly on the network - rely on connected host to perform network operations - cameras, scanners etc
connect other devices - mainly host. move and control network traffic. hubs, switches, routers
provides connections between host and network devices - can be wired such as copper and fiber optic
two directly connected computers
simplest form of peer-to-peer
determines when someone is able to send a message - timing rules based on environment
source and destination hosts use _____ flow control to negotiate correct timing for successful communication
rules for hosts on a network to specify how long to wait for responses and what action to take
one-to-one message pattern - single destination for the message
one-to-many pattern - same message to a group of host destinations simultaneously
if all hosts on the network need to receive the message at the same time. one to all message pattern
destintaion MAC address
which specific address do NICs use when deciding whether or not to accept a frame?
to provide connections to hosts (end user devices) in a local ethernet network
to interconnect the smaller local networks and controls the flow of information
a high-speed connection between distribution layer devices - switches and routers, main goal to transport data quickly
unlike a hub, a _____ can forward a message to a specific host
MAC address table
contains a list of all active ports and the host MAC addresses that are attached to them
networking device that connects a local network to other local networks
only decode (unencapsulate) the frame containing the MAC address information routers
_____ interfaces do not forward messages that are addressed to the broadcast MAC address. As a result, Local network broadcasta are not sent across routers to other local networks.
LAN local area network
the term _____ refers to a local network, or a group of interconnected local networks that are under the same administrative control.early days of networking
allows a network admin to test whether or not the planned network will operate as expected
switch, router, and access point
integrated services router can perform the function of these devices
simple file sharing
_____ can be disabled so that more specific security access levels can be assigned