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Net Essentials > Mod 5-8 > Flashcards

Mod 5-8 Flashcards

1
Q

Which layer of OSI model define services to segment and reassemble data for individual communication between end devices?

A

transport

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2
Q

which three layers of the OSI model are comparable in function to the application layer of the TCP/IP model?

A

application, session, presentation

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3
Q

which statement describes a MAC address?

A

it is a physical address assigned to ethernet NIC by manufacturer

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4
Q

which two layers of OSI model specify protocol that are associated with ethernet standards?

A

physical and data link

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5
Q

which network device can serve as a boundary to divide a layer 2 broadcast domain?

A

router

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6
Q

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?

A

it’ll send and ARP request for the MAC address of the default gateway

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7
Q

which 3 fields are found in a 802.3 ethernet frame?

A

source physical address, frame check sequence, destination physical address

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8
Q

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?

A

create a new layer 2 ethernet frame to be sent to the destination

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9
Q

which portion of the network layer address does a router use to forward packets?

A

network portion

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10
Q

what are 3 advantages of dividing hosts between multiple network connected by a distribution layer?

A

increase security
splits broadcast domain/decrease traffic
makes host invisible to other local network segments

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11
Q

when IPv4 is configured for a computer on a network what does the subnet mask identify?

A

the part of the IP address that identifies the network

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12
Q

what are 3 private IPv4 addresses?

A
  1. 168.0.0
  2. 0.0.0
  3. 16.0.0
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13
Q

what process is used to place on message inside another message for transfer from the source to the destination?

A

encapsulation

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14
Q

which logical address is used for delivery of data to a remote network?

A

destination IP address

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15
Q

what addressing information is recorded by a switch to build a MAC address table?

A

the source layer 2 address of incoming frames

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16
Q

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?

A

the ARP process sends out an ARP request to the ethernet broadcast address to discover the MAC address of the destination device

17
Q

which two parts are components of and IPv4 address?

A

network portion

host portion

18
Q

which two functions are primary functions of a router?

A

packet forwarding

path selection

19
Q

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?

A

it encapsulates the frame with the destination MAC address by using the MAC address of the interface of the next-hop router

20
Q

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?

A

add a default route

21
Q

what is the purpose of protocols in data communication?

A

providing the rules required for a specific type of communication to occur

22
Q

true statement about MAC addresses

A

the first 3 bytes are used by the vendor assigned OUI

23
Q

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?

A

reference model

24
Q

which 2 OSI model layers have the same functionality as 2 layers of the TCP/IP model?

A

transport

network

25
Q

when a host sends a packet, how does it determine if the destination of the packet is on the same local network or on a remote network?

A

it uses the subnet mask to compare the source and destination IP address

26
Q

what are the 3 layers of the hierarchical network design model?

A

access
distribution
core

27
Q

what will LAN switch to if it receives an incoming frame and the destination MAC address is not listed in the MAC address table?

A

forward the frame out to all ports except the port where the frame was received

Net Essentials (5 decks)

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