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Tuesday, April 21, 2009

CCNA1 - Chapter 6

1. Refer to the exhibit. Which network prefix will work with the IP addressing scheme shown in the graphic.


2. Which IPv4 subnetted addresses represent valid host addresses? (Choose three.) /26 /26 /26 /27 /27 /27

3. What three facts are true about the network portion of an IPv4 address? (Choose three.)

identifies an individual device
is identical for all hosts in a broadcast domain
is altered as packet is forwarded
varies in length
is used to forward packets
uses flat addressing

4. Which process do routers use to determine the subnet network address based upon a given IP address and subnet mask?

binary adding
hexadecimal anding
binary division
binary multiplication
binary ANDing

5. What is a group of hosts called that have identical bit patterns in the high order bits of their addresses?

an internet
a network
an octet
a radix

6. What subnet mask would a network administrator assign to a network address of if it were possible to have up to 254 hosts?

7. Which three IP addresses are private? (Choose three.)

8. Given the IP address and subnet mask of, which of the following would describe this address?

This is a useable host address.
This is a broadcast address.
This is a network address.
This is not a valid address.

9. A router interface has been assigned an IP address of with a mask of To which subnet does the IP address belong?

10. Refer to the exhibit. The network administrator has assigned the internetwork of LBMISS an address range of This address range has been subnetted using a /29 mask. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network (subnet zero is the first subnet). By company policies, the router interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which configuration should be entered into the workgroup server's properties to allow connectivity to the network?

IP address: subnet mask: default gateway:
IP address: subnet mask: default gateway:
IP address: subnet mask: default gateway:
IP address: subnet mask: default gateway:
IP address: subnet mask: default gateway:

11. Which of the following network devices are recommended to be assigned static IP addresses? (Choose three.)

LAN workstations
network printers
remote workstations

12. Refer to the exhibit. A network administrator has to develop an IP addressing scheme that uses the /24 address space. The network that contains the serial link has already been addressed out of a separate range. Each network will be allocated the same number of host addresses. Which network mask will be appropriate to address the remaining networks?
13. Refer to the exhibit. Why would the response shown be displayed after issuing the command ping on a PC?

The IP settings are not properly configured on the host.
Internet Protocol is not properly installed on the host.
There is a problem at the physical or data link layer.
The default gateway device is not operating.
A router on the path to the destination host has gone down.

14. What two things will happen if a router receives an ICMP packet which has a TTL value of 1 and the destination host is several hops away? (Choose two.)

The router will discard the packet.
The router will decrement the TTL value and forward the packet to the next router on the path to the destination host.
The router will send a time exceeded message to the source host.
The router will increment the TTL value and forward the packet to the next router on the path to the destination host.
The router will send an ICMP Redirect Message to the source host.

15. What is the primary reason for development of IPv6?

header format simplification
expanded addressing capabilities
addressing simplification

16. How many bits make up an IPv4 address?

17. Refer to the exhibit. A network administrator discovers that host A is having trouble with Internet connectivity, but the server farm has full connectivity. In addition, host A has full connectivity to the server farm. What is a possible cause of this problem?

The router has an incorrect gateway.
Host A has an overlapping network address.
Host A has an incorrect default gateway configured.
Host A has an incorrect subnet mask.
NAT is required for the host A network.

18. Which statements are true regarding IP addressing? (Choose two.)

NAT translates public addresses to private addresses destined for the Internet.
Only one company is allowed to use a specific private network address space.
Private addresses are blocked from public Internet by router.
Network is part of the private address space.
IP address can be used for a host to direct traffic to itself.

19. Refer to the exhibit. Host A is connected to the LAN, but it cannot get access to any resources on the Internet. The configuration of the host is shown in the exhibit. What could be the cause of the problem?

The host subnet mask is incorrect.
The default gateway is a network address.
The default gateway is a broadcast address.
The default gateway is on a different subnet from the host.

20. What is the network address of the host /23 in binary?

10101100. 00011001.01000011.00000000
10101100. 00011001.01000011.11111111
10101100. 00011001.01000010.00000000
10101100. 00011001.01000010.01100011
10101100. 00010001.01000011. 01100010
10101100. 00011001.00000000.00000000

21. Which of the following are features of IPv6? (Choose three.)

larger address space
faster routing protocols
data types and classes of service
authentication and encryption
improved host naming conventions
same addressing scheme as IPv4


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