Modules 8 - 10 Communicating Between Networks Exam
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Modules 8 - 10 Communicating Between Networks E
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Modules 8 - 10 Communicating Between Networks E
Which information is used by routers to forward a data packet toward its destination? - answer-destination IP address
A computer has to send a packet to a destination host in the same LAN. How will the packet be sent? - answer-The packet will be sent directly to the destination host.
A router...
Modules 8 - 10 Communicating Between
Networks Exam
Which information is used by routers to forward a data packet toward its
destination? - answer-destination IP address
A computer has to send a packet to a destination host in the same LAN. How will the
packet be sent? - answer-The packet will be sent directly to the destination host.
A router receives a packet from the Gigabit 0/0 interface and determines that the
packet needs to be forwarded out the Gigabit 0/1 interface. What
will the router do next? - answer-create a new Layer 2 Ethernet frame to be sent to
the destination
Which IPv4 address can a host use to ping the loopback interface? - answer-
127.0.0.1
A computer can access devices on the same network but cannot access devices on
other networks. What is the probable cause of this problem? - answer-The computer
has an invalid default gateway address.
Which statement describes a feature of the IP protocol? - answer-IP relies on upper
layer services to handle situations of missing or out-of-order packets.
Why is NAT not needed in IPv6? - answer-Any host or user can get a public IPv6
network address because the number of available IPv6 addresses is extremely
large.
Which parameter does the router use to choose the path to the destination when
there are multiple routes available? - answer-the lower metric value that is
associated with the destination network
What are two services provided by the OSI network layer? (Choose two.) - answer-
routing packets toward the destination and encapsulating PDUs from the transport
layer
Within a production network, what is the purpose of configuring a switch with a
default gateway address? - answer-The default gateway address is used to forward
packets originating from the switch to remote networks.
What is a basic characteristic of the IP protocol? - answer-Connectionless
Which field in the IPv4 header is used to prevent a packet from traversing a network
endlessly? - answer-Time-to-Live
What is one advantage that the IPv6 simplified header offers over IPv4? - answer-
efficient packet handling
, What IPv4 header field identifies the upper layer protocol carried in the packet? -
answer-Protocol
What information does the loopback test provide? - answer-The TCP/IP stack on the
device is working correctly
What routing table entry has a next hop address associated with a destination
network? - answer-remote routes
How do hosts ensure that their packets are directed to the correct network
destination? - answer-They have to keep their own local routing table that contains
a route to the loopback interface, a local network route, and a remote default route.
When transporting data from real-time applications, such as streaming audio and
video, which field in the IPv6 header can be used to inform the routers and switches
to maintain the same path for the packets in the same conversation? - answer-Flow
Label
What statement describes the function of the Address Resolution Protocol? -
answer-ARP is used to discover the MAC address of any host on the local network.
Under which two circumstances will a switch flood a frame out of every port except
the port that the frame was received on? (Choose two.) - answer-The frame has the
broadcast address as the destination address or the destination address is unknown
to the switch.
Which statement describes the treatment of ARP requests on the local link? -
answer-They are received and processed by every device on the local network.
Which destination address is used in an ARP request frame? - answer-
FFFF.FFFF.FFFF
A network technician issues the arp -d * command on a PC after the router that is
connected to the LAN is reconfigured. What is the result after this command is
issued? - answer-The ARP cache is cleared.
Which two types of IPv6 messages are used in place of ARP for address resolution? -
answer-neighbor solicitation and neighbor advertisement
What is the aim of an ARP spoofing attack? - answer-to associate IP addresses to the
wrong MAC address
Where are IPv4 address to Layer 2 Ethernet address mappings maintained on a host
computer? - answer-ARP cache
What important information is examined in the Ethernet frame header by a Layer 2
device in order to forward the data onward? - answer-destination MAC address
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