Quiz Questions - Course 2

How many IP addresses does a class C network have?

256 Addresses

Which of these allows connections from many devices and inspects the contents of ethernet protocol data?

A switch

The IP address assigned to a device would depend on the _______ it is connected.

Network

Ranges of IP addresses anyone can use for their internal networks are known as ______.

Non-routable address space

Which of these devices contains many network ports, but does no other work than being a container for cable endpoints?

Patch Panel

Which layer of the network model includes specifications for cables and connectors and how signals are sent over these connections?

Physical

The ____________ consists of devices and means of transmitting bits across computer networks.

physical layer

A typical routing table may contain which of the following? Check all that apply.

1) destination network 2) total hops

Please select all of the valid IP addresses. Check all that apply.

192.168.1.1 8.8.8.8

True or false: Most devices are purely a server or a client.

False

You need to identify the manufacturer of a network interface. Where will you look for this information?

The first three octets of a Media Access Control (MAC) address

Consider the following scenario: Your IP address is 192.168.8.34, and your subnet mask is 255.255.0.0. What part of the subnet mask represents the subnet ID?

The first two octets of the subnet mask, 255.255

Which level of the TCP/IP five-layer model does a router operate on?

The network layer

Which layer of the five layer TCP/IP model deals with cabling and connectors?

The physical layer

Why do entries in a local Address Resolution Protocol (ARP) table expire after a short amount of time?

To account for network changes

What is the most common type of cabling used for connecting computing devices?

Twisted Pair Cable

Which of the following are ways for transmitting data at the Ethernet level? (Select all that apply)

- Broadcast - Unicast - Multicast

Which of the following are parts of an Ethernet frame? (Select all that apply)

- Preamble - Data Payload - Ethertype field

Which IP address is Class C?

192.37.48.98; Class C addresses begin with a first octet value of 192 through 223.

How many possible host IDs do you always lose per network?

2

What's a router?

A device that knows how to forward data between independent networks

What address is used for Ethernet broadcasts?

FF-FF-FF-FF-FF-FF

Which of the following is an example of a network layer (layer 3) protocol in the five-layer TCP/IP model?

IP

In a datagram, what does the flag field indicate?

If a datagram is allowed to or has already been fragmented

What modulation type is used for computer networks?

Line Coding

On which layer are Ethernet standards and some wireless technologies operating?

The data link layer

A router is performing basic routing functions. What is the second step in the transmission of a packet?

The router examines the destination IP of this packet.

True or false: Fiber cables use pulses of light to represent the ones and zeros of data.

True

What is eight bits of data called?

octet

The ____ is used to indicate that the datagram is allowed to be fragmented or to indicate that the datagram has already been fragmented.

Flag field

How many octets are there in a MAC address?

6

Which of these is an example of something that works on the application layer (layer 5 of the five-layer TCP/IP model)?

A browser

What is a cyclical redundancy check?

A mathematical calculation used to ensure that all data arrived intact.

You have installed a device at the physical layer. All of the systems you connect to this device will talk to each other at the same time. What have you installed?

Hub

What is the difference between Interior Gateway Protocols and Exterior Gateway Protocols?

Interior Gateway Protocols share information within a single autonomous system. Exterior Gateway Protocols are used for the exchange of information between independent autonomous systems.

What does LAN stand for?

Local Area Network

Which of these is a server?

Something providing data to something requesting the data

True or false: The TCP provides mechanisms to ensure that data is reliably delivered.

True

Where in an ethernet frame will you find a Virtual Local Area Network (VLAN) header?

Before the EtherType field

Which protocol do routers use to determine the optimal path to forward traffic?

Border Gateway Protocol (BGP)

What is used to determine when the communications channels are clear and when a device is free to transmit data?

Carrier Sense Multiple Access with Collision Detection (CSMA/CD)

Which IP address class has the first two octets reserved for the network ID and the last two octets for the host ID?

Class B

What does CIDR stand for?

Classless Inter-Domain Routing

What kind of wiring is in cables that communicate in voltage changes that are received by the receiving device as ones and zeros?

Copper

Which of the following are types of Interior Gateway Protocols? (Select all that apply)

1) Link State Routing Protocols 2) Distance-Vector Protocols

Which of the following are a type of interior gateway protocol? (Choose all that apply)

1) Link state routing protocols 2) Distance-vector protocols

Which of the following are category types of Twisted Pair Ethernet cable? (Select all that apply)

1) Unshielded Twisted Pair (UTP). 2) Foiled Twisted Pair (FTP). 3) Shielded Twisted Pair (STP).

Which of the following are non-routable IP addresses? (Select all that apply)

192.168.0.0/16 172.16.0.0/12 10.0.0.0/8

Which of the following is a correct form of CIDR notation?

192.168.1.0/24

How many bits long is an Autonomous System Number (ASN)?

32

How many bits long is an IP address?

32 bits

How many octets does a subnet mask have?

4

Who is permitted to use non-routable address space?

Anyone

Which of the following is the fifth layer of the TCP/IP Five-layer network model.

Application

What is the difference between full duplex and half duplex?

Full duplex allows communications in two directions at the same time; half duplex means that only one side can communicate at a time.

A Local Area Network (LAN) uses Category 6 cabling. An issue with a connection results in a network link degradation and only one device can communicate at a time, but information can still go in either direction. What is the connection operating at?

Half Duplex