ITN Chapter 9 Exam

Introduction to Networks (Version 5.0) - ITN Chapter 9 Exam

1.  Refer to the exhibit. How many broadcast domains are there?

• 1
• 2
• 3
• 4

2. How many usable host addresses are there in the subnet 192.168.1.32/27?

• 32
• 30
• 64
• 16
• 62

3. How many host addresses are available on the network 172.16.128.0 with a subnet mask of 255.255.252.0?

• 510
• 512
• 1022
• 1024
• 2046
• 2048

4. A network administrator is variably subnetting a network. The smallest subnet has a mask of 255.255.255.248. How many host addresses will this subnet provide?

• 4
• 6
• 8
• 10
• 12

5. Refer to the exhibit. A company uses the address block of 128.107.0.0/16 for its network. What subnet mask would provide the maximum number of equal size subnets while providing enough host addresses for each subnet in the exhibit?

• 255.255.255.0
• 255.255.255.128
• 255.255.255.192
• 255.255.255.224
• 255.255.255.240

6. Refer to the exhibit. The network administrator has assigned the LAN of LBMISS an address range of 192.168.10.0. This address range has been subnetted using a /29 prefix. 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 properties of the workgroup server to allow connectivity to the Internet?

• IP address: 192.168.10.65 subnet mask: 255.255.255.240, default gateway: 192.168.10.76
• IP address: 192.168.10.38 subnet mask: 255.255.255.240, default gateway: 192.168.10.33
• IP address: 192.168.10.38 subnet mask: 255.255.255.248, default gateway: 192.168.10.33
• IP address: 192.168.10.41 subnet mask: 255.255.255.248, default gateway: 192.168.10.46
• IP address: 192.168.10.254 subnet mask: 255.255.255.0, default gateway: 192.168.10.1

7. How many bits must be borrowed from the host portion of an address to accommodate a router with five connected networks?

• two
• three
• four
• five

8. A company has a network address of 192.168.1.64 with a subnet mask of 255.255.255.192. The company wants to create two subnetworks that would contain 10 hosts and 18 hosts respectively. Which two networks would achieve that? (Choose two.)

• 192.168.1.16/28
• 192.168.1.64/27
• 192.168.1.128/27
• 192.168.1.96/28
• 192.168.1.192/28

9.In a network that uses IPv4, what prefix would best fit a subnet containing 100 hosts?

• /23
• /24
• /25
• /26

10. Refer to the exhibit.
Given the network address of 192.168.5.0 and a subnet mask of 255.255.255.224, how many total host addresses are unused in the assigned subnets?

• 56
• 60
• 64
• 68
• 72

11. When developing an IP addressing scheme for an enterprise network, which devices are recommended to be grouped into their own subnet or logical addressing group?

• end-user clients
• workstation clients
• mobile and laptop hosts
• hosts accessible from the Internet

12. A network administrator needs to monitor network traffic to and from servers in a data center. Which features of an IP addressing scheme should be applied to these devices?

• random static addresses to improve security
• addresses from different subnets for redundancy
• predictable static IP addresses for easier identification
• dynamic addresses to reduce the probability of duplicate addresses

13. Which two reasons generally make DHCP the preferred method of assigning IP addresses to hosts on large networks? (Choose two.)

• It eliminates most address configuration errors.
• It ensures that addresses are only applied to devices that require a permanent address.
• It guarantees that every device that needs an address will get one.
• It provides an address only to devices that are authorized to be connected to the network.
• It reduces the burden on network support staff.

14. Refer to the exhibit. A computer that is configured with the IPv6 address as shown in the exhibit is unable to access the internet. What is the problem?

• The DNS address is wrong.
• There should not be an alternative DNS address.
• The gateway address is in the wrong subnet.
• The settings were not validated.

15. When subnetting a /64 IPv6 network prefix, which is the preferred new prefix length?

• /66
• /70
• /72
• /74

16. What is the subnet address for the address 2001:DB8:BC15:A:12AB::1/64?

• 2001:DB8:BC15::0
• 2001:DB8:BC15:A::0
• 2001:DB8:BC15:A:1::1
• 2001:DB8:BC15:A:12::0

17. Which two notations are useable nibble boundaries when subnetting in IPv6? (Choose two.)

• /62
• /64
• /66
• /68
• /70

18. Fill in the blank.
In dotted decimal notation, the IP address ---------- is the last host address for the network 172.25.0.64/26.

19. Fill in the blank.
In dotted decimal notation, the subnet mask ---------- will accommodate 500 hosts per subnet.

20. Consider the following range of addresses:
2001:0DB8:BC15:00A0:0000::
2001:0DB8:BC15:00A1:0000::
2001:0DB8:BC15:00A2:0000::
…
2001:0DB8:BC15:00AF:0000::
The prefix-length for the range of addresses is ----------

21. Fill in the blank.
A nibble consists of ---------- bits.

22. Match the subnetwork to a host address that would be included within the subnetwork. (Not all options are used.) 

23. Refer to the exhibit. Match the network with the correct IP address and prefix that will satisfy the usable host addressing requirements for each network. (Not all options are used.)

24. Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
What issue is causing Host A to be unable to communicate with Host B?

• The subnet mask of host A is incorrect.
• Host A has an incorrect default gateway.
• Host A and host B are on overlapping subnets. 
• The IP address of host B is not in the same subnet as the default gateway is on.

ITN Chapter 8 Exam

Introduction to Networks (Version 5.02) - ITN Chapter 8 Exam

1. How many bits are in an IPv4 address?

• 32
• 64
• 128
• 256

2. Which two parts are components of an IPv4 address? (Choose two.)

• subnet portion
• network portion
• logical portion
• host portion
• physical portion
• broadcast portion

3. What is the prefix length notation for the subnet mask 255.255.255.224?

• /25
• /26
• /27
• /28

4. A message is sent to all hosts on a remote network. Which type of message is it?

• limited broadcast
• multicast
• directed broadcast
• unicast

5. What two statements describe characteristics of Layer 3 broadcasts? (Choose two.)

• Broadcasts are a threat and users must avoid using protocols that implement them.
• Routers create broadcast domains.
• Some IPv6 protocols use broadcasts.
• There is a broadcast domain on each switch interface.
• A limited broadcast packet has a destination IP address of 255.255.255.255.
• A router will not forward any type of Layer 3 broadcast packet.

6. A DHCP server is used to assign IP addresses dynamically to the hosts on a network. The address pool is configured with 192.168.10.0/24. There are 3 printers on this network that need to use reserved static IP addresses from the pool. How many IP addresses in the pool are left to be assigned to other hosts?

• 254
• 251
• 252
• 253

7. Which network migration technique encapsulates IPv6 packets inside IPv4 packets to carry them over IPv4 network infrastructures?

• encapsulation
• translation
• dual-stack
• tunneling

8. Which two statements are correct about IPv4 and IPv6 addresses? (Choose two.)

• IPv6 addresses are represented by hexadecimal numbers.
• IPv4 addresses are represented by hexadecimal numbers.
• IPv6 addresses are 32 bits in length.
• IPv4 addresses are 32 bits in length.
• IPv4 addresses are 128 bits in length.
• IPv6 addresses are 64 bits in length.

9. Which IPv6 address is most compressed for the full FE80:0:0:0:2AA:FF:FE9A:4CA3 address?

• FE8::2AA:FF:FE9A:4CA3
• FE80::2AA:FF:FE9A:4CA3
• FE80::0:2AA:FF:FE9A:4CA3
• FE80:::0:2AA:FF:FE9A:4CA3

10. What are two types of IPv6 unicast addresses? (Choose two.)

• multicast
• loopback
• link-local
• anycast
• broadcast

11. What are three parts of an IPv6 global unicast address? (Choose three.)

• an interface ID that is used to identify the local network for a particular host
• a global routing prefix that is used to identify the network portion of the address that has been provided by an ISP
• a subnet ID that is used to identify networks inside of the local enterprise site
• a global routing prefix that is used to identify the portion of the network address provided by a local administrator
• an interface ID that is used to identify the local host on the network

12. An IPv6 enabled device sends a data packet with the destination address of FF02::1. What is the target of this packet?

• all IPv6 DHCP servers
• all IPv6 enabled nodes on the local link
• all IPv6 configured routers on the local link
• all IPv6 configured routers across the network

13. When a Cisco router is being moved from an IPv4 network to a complete IPv6 environment, which series of commands would correctly enable IPv6 forwarding and interface addressing?

• Router# configure terminal
  Router(config)# interface fastethernet 0/0
  Router(config-if)# ip address 192.168.1.254 255.255.255.0
  Router(config-if)# no shutdown
  Router(config-if)# exit
  Router(config)# ipv6 unicast-routing

• Router# configure terminal
  Router(config)# interface fastethernet 0/0
  Router(config-if)# ipv6 address 2001:db8:bced:1::9/64
  Router(config-if)# no shutdown
  Router(config-if)# exit
  Router(config)# ipv6 unicast-routing
   
• Router# configure terminal
  Router(config)# interface fastethernet 0/0
  Router(config-if)# ipv6 address 2001:db8:bced:1::9/64
  Router(config-if)# no shutdown

• Router# configure terminal
  Router(config)# interface fastethernet 0/0
  Router(config-if)# ip address 2001:db8:bced:1::9/64Router(config-if)# ip address 192.168.1.254 255.255.255.0
  Router(config-if)# no shutdown

14. Which two ICMP messages are used by both IPv4 and IPv6 protocols? (Choose two.)?

• router solicitation
• route redirection
• neighbor solicitation
• protocol unreachable
• router advertisement

15. When an IPv6 enabled host needs to discover the MAC address of an intended IPv6 destination, which destination address is used by the source host in the NS message?

• all-node multicast address
• solicited-node multicast address
• link-local address of the receiver
• global unicast address of the receiver

16. When will a router drop a traceroute packet?

• when the router receives an ICMP Time Exceeded message
• when the RTT value reaches zero
• when the host responds with an ICMP Echo Reply message
• when the value in the TTL field reaches zero
• when the values of both the Echo Request and Echo Reply messages reach zero

17. What is indicated by a successful ping to the ::1 IPv6 address?

• The host is cabled properly.
• The default gateway address is correctly configured.
• All hosts on the local link are available.
• The link-local address is correctly configured.
• IP is properly installed on the host.

18. Which two things can be determined by using the ping command? (Choose two.)

• the number of routers between the source and destination device
• the IP address of the router nearest the destination device
• the average time it takes a packet to reach the destination and for the response to return to the source
• whether or not the destination device is reachable through the network
• the average time it takes each router in the path between source and destination to respond

19. Fill in the blank.
The decimal equivalent of the binary number 10010101 is ..................


20. Fill in the blank.
What is the decimal equivalent of the hex number 0x3F? .....................


21. Match each description with an appropriate IP Address. (Not all options are used.)

22. Match each description with an appropriate IP address. (Not all options are used.)

23. Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
Which message is displayed on the web server?

• You did it right!
• Correct configuration!
• IPv6 address configured! 
• Successful configuration!