ICND Part 1

1. How many bits are in an IPv4 address?

16

32

64

128

2. The address 172.16.128.17 is of which class?

Class A

Class B

Class C

Class D

3. What organization is responsible for Ethernet standards?

ISO

IEEE

EIA

IEC

4. Ports that are used only for the duration of a specific session are called -.

Dynamically assigned ports

Well-known ports

Registered ports

5. Which characteristic is similar between TCP and UDP?

Operates at Layer 4 (transport layer) of the OSI model and the TCP/IP stack

Capable of performing a very limited form of error checking

Provides service on a best-effort basis and does not guarantee packet delivery

Provides no special features that recover lost or corrupted packets

6. Which resource is not sharable on a network?

Memory

Applications

Peripherals

Storage devices

7. Sequence numbers and acknowledgment numbers are found where?

UDP Header

TCP Header

Initial sequence number

Application Layer

8. What is the purpose of a router?

To interconnect networks and choose the best paths between them

To provide the connection points for the media

To serve as the end point in the network, sending and receiving data

To provide the means by which the signals are transmitted from one networked device to another

9. TCP is best for which two of the following applications? (Choose two.)

E-mail

Voice streaming

Downloading

Video streaming

Submit

10. Which field in a TCP header ensures that data arrives in correct order?

Acknowledgment number

Sequence number

Reserved

Options

11. In a TCP connection setup, the initiating device sends which message?

ACK

Receive SYN

Send SYN

12. When a single computer with one IP address has several websites open at once, this is called -.

Windowing

Session multiplexing

Segmenting

Connection-oriented protocol

13. Which three of the following characteristics apply to UDP? Choose three.

Packets are treated independently

Packet delivery is guaranteed

Packet delivery is not guaranteed

Lost or corrupted packets are not resent

Submit

14. Which statement about physical networking topologies is accurate?

A physical topology defines the way in which the computers, printers, network devices, and other devices are connected.

There are two primary categories of physical topologies: bus and star.

A physical topology describes the paths that signals travel from one point on anetwork to another.

The choice of a physical topology is largely influenced by the type of data to be transmitted over the network.

15. Which statement about MAC addresses is accurate?

A MAC address is a number in hexadecimal format that is physically located on the NIC.

A MAC address is represented by hexadecimal digits that are organized in paIrs

It is not necessary for a device to have a unique MAC address to participate in the network.

The MAC address can never be changed.

16. Which two of the following characteristics apply to TCP? (Choose two.)

Packet delivery is not guaranteed

Lost or corrupted packets are not resent

Lost or corrupted packets are resent

TCP segment contains a sequence number and an acknowledgment number

Submit

17. Which of the following statements is true of a directed-broadcast address?

A broadcast address is an address that has all Os in the host field.

Any IP address in a network can be used as a broadcast address

A directed broadcast address is an address that has all 1 s in the host field.

None of the above is correct.

18. Which of the following four attacks is classified as an access attack?

Password attacks

DDoS

Trojan horse

Love Bug

19. What is the main threat to a closed network?

Deliberate attack from outside

A deliberate or accidental attack from inside

Misuse by customers

Misuse by employees

20. Which two factors have recently influenced the increase in threats from hackers?

Hacker tools require more technical knowledge to use

Hacker tools have become more sophisticated.

The number of reported security threats has remained constant year to year

Hacker tools require less technical knowledge to use

Submit

21. Which three of the following are common network applications? (Choose three.)

E-mail

Collaboration

Graphics creation

Databases

Spreadsheets

Submit

22. What is the function of a network protocol?

Uses sets of rules that tell the services of a network what to do

Ensures reliable delivery of data

Routes data to its destination in the most efficient manner

Is a set offunctions that determine how data is defined

23. Proprietary applications use which kind of port?

Dynamically assigned ports

Well-known ports

Registered ports

24. Which statement about logical topologies is accurate?

A logical topology defmes the way in which the computers, printers, networkdevices, and other devices are connected.

A logical topology depends solely on the type of computers to be included in the network.

A logical topology describes the paths that the signals travel from one point on a network to another.

A network cannot have different logical and physical topologies.

25. Which three statements about TCP are accurate?

TCP operates at Layer 3 of the TCP/IP stack.

TCP is a connection-oriented protocol.

TCP provides no error checking

TCP packets are numbered and sequenced so that the destination can reorderpackets and determine if a packet is missing.

Submit

26. Acknowledgment and windowing are two forms of -.

Flow control

TCP connection

TCP sequencing

Reliable connections

27. Which minimum category of UTP is required for Ethernet 1OOO BASE- T?

Cat 3

Cat 4

Cat 5

Cat 5e

28. What is the purpose of a switch?

To choose the path over which data is sent to its destination

To serve as the end point in the network, sending and receiving data

To provide network attachment to the end systems and intelligent switching of the data within the local network

29. Which two statements about wireless networks are accurate?

Instead of cables, wireless communication uses RF or infrared waves to transmit data.

To receive the signals from the access point, a computer needs to have a wireless adapter card or wireless NIC.

For wireless LANs, a key component is a router, which propagates signal distribution.

Wireless networks are not very common, and generally only large corporations use them.

Submit

30. Which statement about NICs is accurate?

The NIC plugs into a USB port and provides a port for connecting to thenetwork.

The NIC communicates with the network through a serial connection and communicates with the computer through a parallel connection

The NIC communicates with the network through a parallel connection and communicates with the computer through a serial connection.

An NIC is also referred to as a switch adapter

31. Which three statements about networks are accurate? Choose three.)

Networks are used to transmit data in many kinds of environments, includinghomes, small businesses, and large enterprises.

A main office can have hundreds or even thousands of people who depend on network access to do their jobs.

A network is a connected collection of devices that can communicate with each other.

A main office usually has one large network to connect all users.

Submit

32. Which two statements about the purpose of the OSI model are accurate? Choose two

The OSI model defines the network functions that occur at each layer.

The OSI model ensures reliable data delivery through its layered approach

The OSI model allows changes in one layer to affect the other layers

The OSI model facilitates an understanding of how information travels throughout a network.

Submit

33. Windowing provides which of the following services?

The sender can multiplex

The receiver can have outstanding acknowledgments

The receiver can multiplex

The sender can transmit a specified number of unacknowledged segments

34. Which statement about an Ethernet address is accurate?

The address used in an Ethernet LAN directs data to the proper receivinglocation.

The source address is the 4-byte hexadecimal address of the NIC on the computer that is generating the data packet.

Both the destination and source addresses consist of an 8-byte hexadecimal number.

35. The source port in both a UDP header and a TCP header is a -.

16-bit number of the called port

16-bit length of the header

16-bit sum of the header and data fields

16-bit number of the calling port

36. This design adds redundancy to the network.

Star

Bus

Ring

Partial-mesh

Dual ring

37. Which three statements about IP are accurate? (Choose three.)

IP is a connectionless protocol

IP uses relational addressing

IP delivers data reliably

IP does not provide any recovery functions.

IP delivers data on a best-effort basis

Submit

38. Which three characteristics pertain to UTP?

UTP cable is an eight-pair wire.

An insulating material covers each of the individual copper wires in UTPcable.

The wires in each pair are wrapped around each other.

There is limited signal degradation from EMI and RFI.

There are seven categories of UTP cable.

Submit

39. Which area of the OSI model and the TCP/IP stack is most diverse?

Network layer

Transport layer

Application layer

Data link layer

40. What are three characteristics of Ethernet 802.3? (Choose three.)

Based on the CSMA/CD process

Is a standard that has been replaced by Ethernet II

Specifies the physical layer (Layer 1)

Developed in the mid-1970s

Specifies the MAC portion of the data link layer (Layer 2)

Submit

41. What is the purpose of network interconnections?

To choose the path over which data is sent to its destination

To provide a means for data to travel from one point to another in the network

To provide network attachment to the end systems and intelligent switching of the data within the local network

42. Which two of these addresses are private IP addresses?

10.215.34.124

127.16.71.43

172.17.10.10

225.200.15.10

Submit

ICND Part 1

1. How many bits are in an IPv4 address?

2.

What first name or nickname would you like us to use?

2. The address 172.16.128.17 is of which class?

3. What organization is responsible for Ethernet standards?

4. Ports that are used only for the duration of a specific session are called -.

5. Which characteristic is similar between TCP and UDP?

6. Which resource is not sharable on a network?

7. Sequence numbers and acknowledgment numbers are found where?

8. What is the purpose of a router?

9. TCP is best for which two of the following applications? (Choose two.)

10. Which field in a TCP header ensures that data arrives in correct order?

11. In a TCP connection setup, the initiating device sends which message?

12. When a single computer with one IP address has several websites open at once, this is called -.

13. Which three of the following characteristics apply to UDP? Choose three.

14. Which statement about physical networking topologies is accurate?

15. Which statement about MAC addresses is accurate?

16. Which two of the following characteristics apply to TCP? (Choose two.)

17. Which of the following statements is true of a directed-broadcast address?

18. Which of the following four attacks is classified as an access attack?

19. What is the main threat to a closed network?

20. Which two factors have recently influenced the increase in threats from hackers?

21. Which three of the following are common network applications? (Choose three.)

22. What is the function of a network protocol?

23. Proprietary applications use which kind of port?

24. Which statement about logical topologies is accurate?

25. Which three statements about TCP are accurate?

26. Acknowledgment and windowing are two forms of -.

27. Which minimum category of UTP is required for Ethernet 1OOO BASE- T?

28. What is the purpose of a switch?

29. Which two statements about wireless networks are accurate?

30. Which statement about NICs is accurate?

31. Which three statements about networks are accurate? Choose three.)

32. Which two statements about the purpose of the OSI model are accurate? Choose two

33. Windowing provides which of the following services?

34. Which statement about an Ethernet address is accurate?

35. The source port in both a UDP header and a TCP header is a -.

36. This design adds redundancy to the network.

37. Which three statements about IP are accurate? (Choose three.)

38. Which three characteristics pertain to UTP?

39. Which area of the OSI model and the TCP/IP stack is most diverse?

40. What are three characteristics of Ethernet 802.3? (Choose three.)

41. What is the purpose of network interconnections?

42. Which two of these addresses are private IP addresses?