Network Essentials: Modules 6-10
A DHCP-enabled client PC has just booted. During which two steps will the client PC use broadcast messages when communicating with a DHCP server?
DHCPREQUEST, DHCPDISCOVER
Which DHCPv4 message will a client send to accept an IPv4 address that is offered by a DHCP server?
broadcast DHCPREQUEST
which info is used by routers to forward a data packet toward its destination
destination IP address
If more than one DHCP server is available on the local network, in which order will DHCP messages be sent between a host and a DHCP server?
discover, offer, request, acknowledgment
Which is a DHCPv4 address allocation method that assigns IPv4 addresses for a limited lease period?
dynamic allocation
which term refers to the process of placing one message format inside another message format
encapsulation
which three fields are found in an 802.3 ethernet frame
frame check sequence, source physical address, destination physical address
what is the purpose of the core layer in the cisco hierarchical network design model
high-speed backbone switching
Which network migration technique encapsulates IPv6 packets inside IPv4 packets to carry them over IPv4 network infrastructures?
tunneling
which ip address type is intended for a specific host
unicast
Which statement is true about DHCP operation?
when a device that is configures to use DHCP boots, the client broadcasts a DHCPDISCOVER message to identify any available DHCP servers on the network
which address prefix range is reserved for ipv4 multicast
224.0.0.0 - 239.255.255.255
which is NOT a private IPv4 address
224.6.6.6
how many usable hosts are available given a class c ip address with the default subnet mask
254
Which destination IPv4 address does a DHCPv4 client use to send the initial DHCP Discover packet when the client is looking for a DHCP server?
255.255.255.255
how much data can be encapsulated into a normal sized ethernet frame before it is sent over the network
46 to 1500 bytes
Which destination address is used in an ARP request frame
FFFF.FFFF.FFFF
A router receives an incoming packet and determines that the destination host is located on a LAN directly attached to one of the router interfaces. Which destination address will the router use to encapsulate the Ethernet frame when forwarding the packet?
MAC address of the destination host
which method of ipv6 prefix assignment relies on the prefix contained in RA messages
SLAAC
How is a frame sent from PCA forwarded to PCC if the MAC address table on SW1 is empty
SW1 floods the frame on all ports on SW1, excluding the port through which the frame entered the switch
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?
create a new layer 2 ethernet frame to be sent to the destination
what type of route is indicated by the code C in an IPv4 routing table on a cisco router?
directly connected route
which network technology allows devices to communicate using both ipv4 and ipv6 addressing at the same time
dual stack
which two devices would commonly be found at the access layer of the hierarchical enterprise LAN design model?
layer 2 switch, access point
What type of IPv6 address is FE80::1?
link-local
what is an advantage of using 1pv6
more addresses for networks and hosts
which portion of the network layer address does a router use to forward packets
network portion
Typically, which network device would be used to perform NAT for a corporate environment?
router
Which network device can serve as a boundary to divide a Layer 2 broadcast domain
router
what role does a router play on a network
selecting the path to destination networks
what info does an ethernet switch examine and use to build its address table
source MAC address
which network device has the primary function to send data to a specific destination based on the info found in the MAC address table
switch
during the process of forwarding traffic, what will the router do immediately after matching the destination IP address to a network on a directly routing table entry
switch the packet to the directly connected interface
Which address should be configures as the default gateway address of a client device
the IPv4 address of the router interface that is connected to the same LAN
which characteristic describes the default gateway of a host computer
the logical address of the router interface on the same network as the host computer
when ipv4 is configures for a computer on a network, what does the subnet mask identify
the part of the ip address that identifies the network
what will a router do if it cannot determine where to forward an incoming packet?
the router will drop it
what is NOT a characteristic of a multicast transmission
the source address of a multicast transmission is in the range of 224.0.0.0 to 224.0.0.255
why does a layer 3 device perform the ANDing process on a destination IP address and subnet mask
to identify the network address of the destination network
what is the purpose of ARP in an IPv4 network
to obtain a specific MAC address when an IP address is known
