Unit three chapters 7-9

Using the illustration from question 15, what would be the IP address of E0 if you were using the first subnet? The network ID is 192.168.10.0/28, and you need to use the last available IP address in the range. Again, the 0 subnet should not be considered valid for this question.

.192.168.10.30

On a network, which mask should you use on point-to-point WAN links in order to reduce the waste of IP addresses?

/30

Which of the following is an address that you can assign to a host on a private IPv4 network?

10.1.0.253

Which of the following is a valid Class A address?

126.10.0.1

An IPv4 address uses 32 bits. How many bits is an IPv6 address?

128

Which of the following is a valid Class B address?

129.1.1.1

Which of the following is true for MAC addresses?

MAC addresses are always local on the LAN and never go through or past a router.

What happens when a router receives a packet for a network that isn't listed in the routing table?

None of the above.

Which of the following is not a distance vector protocol?

OSPF

You have one IP address provided from your ISP with a /30 mask. However, you have 300 users that need to access the Internet. What technology will you use to implement a solution?

PAT

Which of the following is an invalid IP address for a host?

224.0.0.1

In a Class C IP address, how long is the network address?

24 bits

Which of the following is the default subnet mask for an IPv4 Class A network?

255.0.0.0

Ralph has been instructed to use the network address 10.12.0.0/14 for the new network he is installing. What subnet mask value should he use when configuring his computers?

255.252.0.0

Alice has been instructed to create a network with 8 subnets and 30 hosts per subnet. She has been assigned a Class C network address. Which of the following subnet masks will she have to use?

255.255.255.224

What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255.255.255.224 subnet mask?

30

You have an interface on a router with the IP address of 192.168.192.10/29. Including the router interface, how many hosts can have IP addresses on the LAN attached to the router interface?

6

Which of the following is a hybrid routing protocol?

EIGRP

Which of the following are not valid IPv4 addresses in the private address space defined by RFC 1918? (Choose all correct answers.)

172.15.2.9 172.33.19.7

What is the highest usable address on the 172.16.1.0/24 network?

172.16.1.254

If an Ethernet port on a router was assigned an IP address of 172.16.112.1/25, what would be the subnet address of this host?

172.16.112.0

You have a network with a subnet of 172.16.17.0/22. Which of the following is a valid host address?

172.16.18.255 255.255.252.0

Your router has the following IP address on Ethernet0: 172.16.2.1/23. Which of the following can be valid host IDs on the LAN interface attached to the router? (Choose two.)

172.16.3.0 172.16.2.255

If a host on a network has the address 172.16.45.14/30, what is the subnetwork this host belongs to?

172.16.45.12

The subnet masks should be set to 255.255.255.0.

172.16.45.12

Which of the following are private IP addresses? (Choose two.)

172.20.14.36 192.168.24.43

Which of the following addresses is not allowed on the Internet?

172.31.12.251

Using the following illustration, what would be the IP address of E0 if you were using the eighth subnet? The network ID is 192.168.10.0/28, and you need to use the last available IP address in the range. The 0 subnet should not be considered valid for this question

192.168.10.142

You have an interface on a router with the IP address of 192.168.192.10/29. What is the broadcast address the hosts will use on this LAN?

192.168.192.15

Which of the following is a Class C network address?

192.255.254.0

What is the subnetwork address for a host with the IP address 200.10.5.68/28?

200.10.5.64

A network administrator is connecting two hosts directly through their Ethernet interfaces, as shown in the illustration. Ping attempts between the hosts are unsuccessful. What can be done to provide connectivity between the hosts? (Choose two.)

A crossover cable should be used in place of the straight-through cable. The subnet masks should be set to 255.255.255.0.

Which statement regarding private IP addresses is most accurate?

A remote host across the Internet cannot ping your host if it has a private address.

What type of request must a client send if it does not know the destination MAC address?

ARP broadcast

Which of the following describes a broadcast address?

All host bits are on (1s).

What two statements about IPv4 and IPv6 addresses are true? (Choose two.)

An IPv4 address is 32 bits long, represented in decimal. An IPv6 address is 128 bits long, represented in hexadecimal.

What EGP protocol is used on the Internet?

BGP

What are the two categories of IGP protocols?

Link state Distance vector

What command would be used to view the ARP cache on your host?

C:\ >arp -a

You need to perform maintenance on a router in your corporate office. It is important that the network does not go down. What can you do to accomplish your goal?

Configure on the router a static route that temporarily reroutes traffic through another office.

When configuring the IP settings on a computer on one subnet to ensure that it can communicate with a computer on another subnet, which of the following is desirable?

Configure the computer with a default gateway that matches the IP address of the interface of the router that is attached to the same subnet as the computer.

When all routers in a network agree about the path from one point to another, the network is said to be what?

Converged

What is it called when protocols update their forwarding tables after changes have occurred?

Convergence

Where does a frame have to carry a packet if it is destined for a remote network?

Default gateway

Where along the IP routing process does a packet get changed?

Destination device

What two pieces of information does a router require to make a routing decision? (Choose two.)

Destination network (address) Neighbor router

Which is true regarding dynamic routing?

Dynamic routes are automatically added to the routing table.

IPv6 unicast routing is running on the Corp router. Which of the following addresses would be used as the EUI-64 address?Corp#sh int f0/0FastEthernet0/0 is up, line protocol is upHardware is AmdFE, address is 000d.bd3b.0d80 (bia 000d.bd3b.0d80)[output cut]

FE80::3c3d:2d:bdff:fe3b:0d80

Which of the following is a Layer 2 broadcast?

FF.FF.FF.FF.FF.FF

Which two of the following are link state protocols?

IS-IS OSPF

You receive a call from a user who is complaining that they cannot get on the Internet. You have them verify their IP address, mask, and default gateway. The IP address is 10.0.37.144, with a subnet mask of 255.255.254.0. The default gateway is 10.0.38.1. What is the problem?

Incorrect gateway IP

What does the acronym IGRP stand for?

Interior Gateway Routing Protocol

Which of the following is true when describing a unicast address?

Packets addressed to a unicast address are delivered to a single interface.

Which of the following is true when describing a multicast address?

Packets are delivered to all interfaces identified by the address. This is also called a one-to-many address.

Which is not a routing protocol?

RIPv3

On which of the following devices are you most likely to be able to implement NAT?

Router

You have a Class A host of 10.0.0.110/25. It needs to communicate to a host with an IP address of 10.0.0.210/25. Which of the following devices do you need to use in order for these hosts to communicate?

Router

Which of these best describes dynamic routing?

Routing tables are updated automatically when changes occur in the network.

If you are forced to replace a router that has failed to the point that you are unable to access its current configuration to aid in setting up interface addresses on the new router, which of the following can you reference for assistance?

The default gateway settings on computers from each subnet that the old router interconnected.

A host is rebooted and you view the IP address that it was assigned. The address is 169.123.13.34. Which of the following happened?

The host received a public address.

Which of the following is true when describing an anycast address?

This address identifies multiple interfaces, and the anycast packet is delivered to only one address: the closest one. This address can also be called one-to-nearest.

What two statements about IPv6 addresses are true? (Choose two.)

Two colons (::) are used to represent successive hexadecimal fields of zeros. A single interface will have multiple IPv6 addresses of different types.

Classless Inter-Domain Routing (CIDR) is a standard for IP addressing that includes the ability to create subnets using any number of IP address bits, rather than using 8-bit blocks. Which of the following terms describes this ability?

VLSM

When are you most likely to see a Request Timed Out message?

When an unknown error has occurred

Ed has been hired to design a company's network. The company has an assigned Class C network address of 192.168.30.0. Ed's client wants the network to be configured with 10 subnets, each with 14 hosts. Is this configuration possible with the given address, and if so, how many subnets and hosts can Ed create on the network?

Yes, this will work. By using 4 subnet bits, it is possible for Ed to create up to 16 subnets. He can then use the remaining 4 host bits to create 14 hosts on each subnet.

You want to ping the loopback address of your local host. Which two addresses could you type? (Choose two.)

ping 127.0.0.1 ping ::1