Cisco Networking Basics Module 8-14 Quiz
Launch the "Mod12_14CheckExam.pka" PT Activity. What is the MAC address of the default gateway for PC0?
0060.70DE.3192
What are the three ranges of IP addresses that are reserved for internal private use? (Choose three.)
10.0.0.0/8; 172.16.0.0/12; 192.168.0.0/16
Consider the group of five IPv4 addresses with the subnet mask of 255.255.255.0. Select three of them that belong to the same logical network.
172.16.45.12; 172.16.45.56; 172.16.45.35
Refer to the exhibit. What is the network number of the LAN that is shown?
192.168.10.0
Refer to the exhibit. The IP address settings of a host are shown. What is the host number of the IP address?
2
Which shortened address is an accurate representation of the IPv6 address 2001:0db8:0000:0000:ab00:0000:0000:0000?
2001:db8:0:0:ab00::
How many bits make up an IPv4 address?
32
Which protocol is used by a computer to find the MAC address of the default gateway on an Ethernet network?
ARP
When a LAN is connected to the internet using a wireless router, how do devices on the LAN communicate on the internet using NAT?
All devices must share the single public IPv4 address assigned to the wireless router in order to communicate to the internet via NAT.
Which destination address is used in an ARP request frame?
FFFF.FFFF.FFFF
What are two functions of a router? (Choose two.)
It determines the best path to send packets; A router connects multiple IP networks.
Refer to the exhibit. Consider the IP address configuration shown from PC1. What is a description of the default gateway address?
It is the IP address of the Router1 interface that connects the PC1 LAN to Router1.
Refer to the exhibit. What does the router do after it determines that a data packet from Network 1 should be forwarded to Network 2?
It reassembles the frame with different MAC addresses than the original frame.
The ARP table in a switch maps which two types of address together?
Layer 3 address to a Layer 2 address
What action does the ARP process take when a host needs to build a frame, but the ARP cache does not contain an address mapping?
The ARP process sends out an ARP request to the Ethernet broadcast address to discover the MAC address of the destination device.
What is the result if the default gateway address is misconfigured on a PC?
The PC can communicate with devices in the same network but not with those in remote networks.
A network administrator investigates a user problem. The user can reach hosts on the same network, but is unable to communicate to remote networks. The network administrator tries to ping the gateway address configured on the host device and is unsuccessful. What is the most likely cause of the problem?
The default gateway address is incorrect.
Which statement is true about DHCP operation?
When a device that is configured to use DHCP boots, the client broadcasts a DHCPDISCOVER message to identify any available DHCP servers on the network.
Match each description with an appropriate IP address.
a private address-172.19.20.5 an experimental address-240.2.6.255 a loopback address-127.0.0.1 a link-local address-169.254.1.5
A home network is using NAT on the router connecting it to the internet. The PCs on the home network receive private IP addresses through DHCP. When a PC sends a packet to a web server on the internet, what is the source IP address in the packet header when it arrives at the web server?
a registered public IP address assigned to the external router interface
Which DHCPv4 message will a client send to accept an IPv4 address that is offered by a DHCP server?
broadcast DHCPREQUEST
When a router receives a packet, what information must be examined in order for the packet to be forwarded to a remote 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
What are two reasons a network administrator might want to create subnets? (Choose two.)
easier to implement security policies; improves network performance
Which portion of the network layer address does a router use to forward packets?
network portion
Which two types of devices are typically assigned static IP addresses? (Choose two.)
printers; servers
Which type of address can be shared through NAT to enable home network devices to send and receive data over the internet?
registered public IP address
A host needs to reach another host on a remote network, but the ARP cache has no mapping entries. To what destination address will the host send an ARP request?
the broadcast MAC address
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
Why is it important for the router to maintain an accurate routing table?
to determine the best path to reach the destination network
What is the purpose of the subnet mask in conjunction with an IP address?
to determine the subnet to which the host belongs
What is the purpose of ARP in an IPv4 network?
to obtain a specific MAC address when an IP address is known
When the IETF began development of IPv6, what was the goal of implementing this technology?
to relieve IPv4 address depletion
Three methods allow IPv6 and IPv4 to co-exist. Match each method with its description.
translation-IPv6 packets are converted into IPv4 packets, and vice versa; tunneling-The IPv6 packet is transported inside an IPv4 packet; dual-stackl-The IPv4 packet and IPv6 packets coexist in the same network
A student is helping a friend with a home computer that can no longer access the Internet. Upon investigation, the student discovers that the computer has been assigned the IP address 169.254.100.88. What could cause a computer to get such an IP address?
unreachable DHCP server
