CCNA Chapter 7-8

Refer to the exhibit. Considering the addresses already used and having to remain within the 10.16.10.0/24 network range, which subnet address could be assigned to the network containing 25 hosts? 10.16.10.160/26 10.16.10.128/28 10.16.10.64/27 10.16.10.224/26 10.16.10.240/27 10.16.10.240/28

10.16.10.64/27

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

1022

The binary equivalent of the decimal number 232 is ________________

11101000

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

192.168.1.64/27 and 192.168.1.96/28

How many bits are in an IPv4 address? 32 64 128 256

32

Refer to the exhibit. How many broadcast domains are there? 1 2 3 4

4

What is the decimal equivalent of the hex number 0x3F?

63

Refer to the exhibit. Given the network address of 192.168.5.0 and a subnet mask of 255.255.255.224 for all subnets, how many total host addresses are unused in the assigned subnets? 64 56 68 60 72

72

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

72

What field content is used by ICMPv6 to determine that a packet has expired? TTL field CRC field Hop Limit field Time Exceeded field

Hop Limit field

Which protocol supports Stateless Address Autoconfiguration (SLAAC) for dynamic assignment of IPv6 addresses to a host? ARPv6 DHCPv6 ICMPv6 UDP

ICMPv6

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.

IP is properly installed on the host.

What is a result of connecting two or more switches together? The number of broadcast domains is increased. The size of the broadcast domain is increased. The number of collision domains is reduced. The size of the collision domain is increased.

The size of the broadcast domain is increased.

192.0.2.123 ->

a TEST-NET address

240.2.6.255 ->

an experimental address

A message is sent to all hosts on a remote network. Which type of message is it? limited broadcast multicast directed broadcast unicast

directed broadcast

Which two IPv4 to IPv6 transition techniques manage the interconnection of IPv6 domains? (Choose two.) trunking dual stack encapsulation tunneling multiplexing

dual stack and tunneling

What does the IP address 172.17.4.250/24 represent? network address multicast address host address broadcast address

host address

What are two reasons a network administrator might want to create subnets? (Choose two.) simplifies network design improves network performance * easier to implement security policies* reduction in number of routers needed reduction in number of switches needed

improves network performance and easier to implement security policies

What type of address is automatically assigned to an interface when IPv6 is enabled on that interface? global unicast link-local loopback unique local

link-local

What are two types of IPv6 unicast addresses? (Choose two.) multicast loopback link-local anycast broadcast

loopback and link-local

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

predictable static IP addresses for easier identification

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

three

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 _____________

/60

What is the binary equivalent of the decimal number 232? 11101000 11000110 10011000 11110010

11101000

If a network device has a mask of /28, how many IP addresses are available for hosts on this network? 256 254 62 32 16 14

14

The decimal equivalent of the binary number 10010101 is ____________

149

What is the decimal equivalent of the binary number 10010101? 149 157 168 192

149

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

251

What subnet mask is represented by the slash notation /20? 255.255.255.248 255.255.224.0 255.255.240.0 255.255.255.0 255.255.255.192

255.255.240.0

An administrator wants to configure hosts to automatically assign IPv6 addresses to themselves by the use of Router Advertisement messages, but also to obtain the DNS server address from a DHCPv6 server. Which address assignment method should be configured? SLAAC stateless DHCPv6 stateful DHCPv6 RA and EUI-64

stateless DHCPv6

What is the purpose of ICMP messages? to inform routers about network topology changes to ensure the delivery of an IP packet to provide feedback of IP packet transmissions to monitor the process of a domain name to IP address resolution

to provide feedback of IP packet transmissions

Which three IP addresses are private ? (Choose three.) 10.1.1.1 172.32.5.2 192.167.10.10 172.16.4.4 192.168.5.5 224.6.6.6

-10.1.1.1 -172.16.4.4 -192.168.5.5

Refer to the exhibit. A company is deploying an IPv6 addressing scheme for its network. The company design document indicates that the subnet portion of the IPv6 addresses is used for the new hierarchical network design, with the site subsection to represent multiple geographical sites of the company, the sub-site section to represent multiple campuses at each site, and the subnet section to indicate each network segment separated by routers. With such a scheme, what is the maximum number of subnets achieved per sub-site? 0 4 16 256

16

What is the prefix for the host address 2001:DB8:BC15:A:12AB::1/64? 2001:DB8:BC15 2001:DB8:BC15:A 2001:DB8:BC15:A:1 2001:DB8:BC15:A:12

2001:DB8:BC15:A

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

255.255.255.128

Which of these addresses is the shortest abbreviation for the IP address:3FFE:1044:0000:0000:00AB:0000:0000:0057? 3FFE:1044::AB::57 3FFE:1044::00AB::0057 3FFE:1044:0:0:AB::57 3FFE:1044:0:0:00AB::0057 3FFE:1044:0000:0000:00AB::57 3FFE:1044:0000:0000:00AB::0057

3FFE:1044:0:0:AB::57

A network administrator is variably subnetting a network. The smallest subnet has a mask of 255.255.255.248. How many usable host addresses will this subnet provide? 4 6 8 10 12

6

172.19.20.5 ->

a private address

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 the destination device is reachable through the network* the average time it takes each router in the path between source and destination to respond

the average time it takes a packet to reach the destination and for the response to return to the source

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

- 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 - an interface ID that is used to identify the local host on the network

What are three characteristics of multicast transmission? (Choose three.) The source address of a multicast transmission is in the range of 224.0.0.0 to 224.0.0.255. A single packet can be sent to a group of hosts. Multicast transmission can be used by routers to exchange routing information. The range of 224.0.0.0 to 224.0.0.255 is reserved to reach multicast groups on a local network. Computers use multicast transmission to request IPv4 addresses. Multicast messages map lower layer addresses to upper layer addresses.

-A single packet can be sent to a group of hosts. -Multicast transmission can be used by routers to exchange routing information. -The range of 224.0.0.0 to 224.0.0.255 is reserved to reach multicast groups on a local network.

A network administrator wants to have the same network mask for all networks at a particular small site. The site has the following networks and number of devices:IP phones - 22 addressesPCs - 20 addresses neededPrinters - 2 addresses neededScanners - 2 addresses neededThe network administrator has deemed that 192.168.10.0/24 is to be the network used at this site. Which single subnet mask would make the most efficient use of the available addresses to use for the four subnetworks? 255.255.255.0 255.255.255.192 255.255.255.224 255.255.255.240 255.255.255.248 255.255.255.252

255.255.255.224

Which subnet mask would be used if 5 host bits are available? 255.255.255.0 255.255.255.128 255.255.255.224 255.255.255.240

255.255.255.224

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: 192.168.10.38 subnet mask: 255.255.255.248, default gateway: 192.168.10.33

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.

It eliminates most address configuration errors and It reduces the burden on network support staff.

169.254.1.5 ->

a link-local address

127.0.0.1 ->

a loopback address

Which two parts are components of an IPv4 address? (Choose two.) subnet portion network portion logical portion host portion physical portion broadcast portion

network portion and host portion

What is the purpose of the subnet mask in conjunction with an IP address? to uniquely identify a host on a network to identify whether the address is public or private to determine the subnet to which the host belongs to mask the IP address to outsiders

to determine the subnet to which the host belongs

A user is executing a tracert to a remote device. At what point would a router, which is in the path to the destination device, stop forwarding the 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

when the value in the TTL field reaches zero