Mod 5-8 Flashcards
Which layer of OSI model define services to segment and reassemble data for individual communication between end devices?
transport
which three layers of the OSI model are comparable in function to the application layer of the TCP/IP model?
application, session, presentation
which statement describes a MAC address?
it is a physical address assigned to ethernet NIC by manufacturer
which two layers of OSI model specify protocol that are associated with ethernet standards?
physical and data link
which network device can serve as a boundary to divide a layer 2 broadcast domain?
router
a host is trying to send a packet to a device on a remote LAN segment, but there are currently no mapping in the ARP cache. How will the device obtain a destination MAC address?
it’ll send and ARP request for the MAC address of the default gateway
which 3 fields are found in a 802.3 ethernet frame?
source physical address, frame check sequence, destination physical address
a router receives a packet from the gigabit 0/0 interface and determines that the packet needs to be forwarded out to gigabit 0/1 interface. What will the router do next?
create a new layer 2 ethernet frame to be sent to the destination
which portion of the network layer address does a router use to forward packets?
network portion
what are 3 advantages of dividing hosts between multiple network connected by a distribution layer?
increase security
splits broadcast domain/decrease traffic
makes host invisible to other local network segments
when IPv4 is configured for a computer on a network what does the subnet mask identify?
the part of the IP address that identifies the network
what are 3 private IPv4 addresses?
- 168.0.0
- 0.0.0
- 16.0.0
what process is used to place on message inside another message for transfer from the source to the destination?
encapsulation
which logical address is used for delivery of data to a remote network?
destination IP address
what addressing information is recorded by a switch to build a MAC address table?
the source layer 2 address of incoming frames
what action does the ARP process take when a host needs to build a frame, but the ARP cache does not contain an addressing mapping?
the ARP process sends out an ARP request to the ethernet broadcast address to discover the MAC address of the destination device
which two parts are components of and IPv4 address?
network portion
host portion
which two functions are primary functions of a router?
packet forwarding
path selection
a router receives an incoming packet and determines that the packet should forwarded to a remote destination hosts. what will the router do to forward the packet?
it encapsulates the frame with the destination MAC address by using the MAC address of the interface of the next-hop router
a router is receiving a stream of incoming packets and does not contain a route to the remote destination network. what configuration can a network admin issue in order to successfully forward the packets?
add a default route
what is the purpose of protocols in data communication?
providing the rules required for a specific type of communication to occur
true statement about MAC addresses
the first 3 bytes are used by the vendor assigned OUI
which type of network model describes the function that must be completed at a particular layer, but does not specify exactly how each protocol should work?
reference model
which 2 OSI model layers have the same functionality as 2 layers of the TCP/IP model?
transport
network
