Test your basic knowledge |

Cisco Network Fundamentals - 2

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Pieces of information about a route that a routing table contains
Next hop - metric and destination network. Routers do not need source address - last hop - or default gateway to find a path to the network.
2nd and third choices are correct--TCP is reliable and connection-oriented. IP is the one that's unreliable and connectionless. IP operates at the network layer.
An alternate HTTP port
1

2. Encapsulation occurs at all - some or none of the layers of the OSI model?
Next hop - metric and destination network. Routers do not need source address - last hop - or default gateway to find a path to the network.
Static routing
All
Allows the transport layer function on the destination host to reassemble segments in the right order

3. Why does TCP use a sequence number in the header?
POP3
To reassemble the segments into data - To identify the application layer protocol - To indicate the number of the next expected byte - To show the maximum number of bytes allowed during a session. Allows the receiving host to reassemble segments in p
Purpose - ownership - and geographic location are key ways to divide a network
IRC

4. How many bits are in an IPv6 address?
User Datagram Protocol
1024. The lower numbers are the well-known ports.1024 through 49151 are registered ports and used by the host for dynamic port allocation
TCP
128

5. What is the purpose of TCP/UDP port numbers?
TCP. It makes larger demands on a network
To track the different conversations crossing the network at the same time
RIP (Routing Information Protocol)
1024 - 49151. Unlike ports with lower numbers - developers of new TCP/UDP services can select a specific number to register with IANA rather than having a number assigned to them. Using registered ports also avoids the additional security restriction

6. Are well known ports registered
Yes - for applications and services such as http - pop - smtp. Client requests services from a specific port.
The source and destination port number
RIP (Routing Information Protocol)
IRC

7. The three-way handshake performs what three functions?
The type-of-service field contains an 8-bit binary value that is used to determine the priority of each packet. This enables QoS (Quality of service) to happen.
Destination device is there - Figures out if it has an active service running and is accepting requests on the right port - Tells the destination device that it wants to communicate on said port
Reliable - connection-oriented protocol (resends if not received)
DNS - video-streaming - VoIP

8. What is the proper order of SYN sequence?
SYN -> SYN.ACK->SEQ - ACK = SEQ+1 - SEQ is a random #
The default gateway address is the address of a router interface that is connected to the same network as the host.
It works the same on all Layer 1 media
User Datagram Protocol

9. What does segmentation provide to communications?
1
Segmentation provides the means to send and receive data when running multiple applications concurrently on a computer
TCP uses flow control
Delivery reliability and application data analysis. The first is a transport layer concern - and the second is the presentation layer. Routing - addressing packets with an IP adress - encapsulation and decapsulation are functions of the network layer

10. What kinds of problems are caused by excessive broadcast traffic on a network segment?
Reduced network bandwidth - increased overhead - and reduced host functions. The other answers are part of solutions to excessive broadcasts
17 (A flag is set in the segment header. If this flag actually reads 17 - it is identified as a UDP header)
Next hop - metric and destination network. Routers do not need source address - last hop - or default gateway to find a path to the network.
TFTP - Trivial File Transfer Protocol

11. List three network applications that use UDP
Netstat lists the protocols in use - the local address and port number - the foreign address and port number - and the state of the connection. Also displays active TCP connections - ports on which the computer is listening - Ethernet statistics - th
An alternate HTTP port
DNS - video-streaming - VoIP
TCP

12. MSN messenger uses TCP or UDP?
Reliable - connection-oriented protocol (resends if not received)
53
TCP
20 and 8

13. Which of the following are true about IP?
Next hop - metric and destination network. Routers do not need source address - last hop - or default gateway to find a path to the network.
It means ensuring that each segment that the source sends arrives at the destination
Unique
It is the most common - and it encapsulates transport layer segments

14. TCP header provides for
Reduced network bandwidth - increased overhead - and reduced host functions. The other answers are part of solutions to excessive broadcasts
Source and destination (ports) - Sequencing - Acknowledgement - Flow control
128
17 (A flag is set in the segment header. If this flag actually reads 17 - it is identified as a UDP header)

15. Port 20 is?
FTP
1024. The lower numbers are the well-known ports.1024 through 49151 are registered ports and used by the host for dynamic port allocation
Connectionless - Best effort (unreliable) - media independent
Web browsing - email - file transfer

16. SYN is?
Reduced network bandwidth - increased overhead - and reduced host functions. The other answers are part of solutions to excessive broadcasts
Decapsulation
Synchronize sequence numbers
Netstat -r and route print

17. IP requires that each sending and receiving device have a __________ IP address.
Forward the packet to the default route interface (gateway) or just drop/discard the packets
Reduced network bandwidth - increased overhead - and reduced host functions. The other answers are part of solutions to excessive broadcasts
TCP. It makes larger demands on a network
Unique

18. Port 69 is?
Segmentation provides the means to send and receive data when running multiple applications concurrently on a computer
TFTP - Trivial File Transfer Protocol
Static routing
Routing table

19. Which protocol ensures more reliable delivery between applications - TCP or UDP?
TCP uses flow control
TCP. It makes larger demands on a network
2nd and third choices are correct--TCP is reliable and connection-oriented. IP is the one that's unreliable and connectionless. IP operates at the network layer.
TCP

20. List three network applications that use TCP
128
2nd and third choices are correct--TCP is reliable and connection-oriented. IP is the one that's unreliable and connectionless. IP operates at the network layer.
Ephermeral
Web browsing - email - file transfer

21. Ephermeral port is what type of port
Acknowledgment and reassembly (receipt of packets and putting them in right order)
Dynamic / private
Source and destination (ports) - Sequencing - Acknowledgement - Flow control
Window size

22. UDP stands for?
Data link - physical
A broadcast domain is a logical part of a network (a network segment) in which any network equipment can transmit data directly to another equipment or device without going through a routing device (assuming the devices share the same subnet and use
Dynamic routing adds packet-processing overhead - and routers can use static and dynamic routing simultaneously
User Datagram Protocol

23. How many bytes of overhead do TCP segments carry? How many does UDP carry?
Connectionless
20 and 8
Does not
Telnet

24. Port 443 is?
HTTPS (Secure HTTP)
Synchronize sequence numbers
IRC
Telnet

25. Port 25 is?
Segmentation provides the means to send and receive data when running multiple applications concurrently on a computer
SMTP
It works the same on all Layer 1 media
Next hop - metric and destination network. Routers do not need source address - last hop - or default gateway to find a path to the network.

26. Port 110 is?
POP3
Synchronize sequence numbers
It adds a header - and adds both source and destination IP addresses. Network layer encapsulation happens only on the original host; other devices can read the data - but they do not remove or alter it until the destination network is reached.
SMTP

27. Which characteristics are part of TCP? Pick two: Reliable - connectionless - no flow control - resends anything not received?
Reliable - connection-oriented protocol (resends if not received)
Destination device is there - Figures out if it has an active service running and is accepting requests on the right port - Tells the destination device that it wants to communicate on said port
False. It's like a file - only one process can read/write.
A broadcast domain is a logical part of a network (a network segment) in which any network equipment can transmit data directly to another equipment or device without going through a routing device (assuming the devices share the same subnet and use

28. Port 8080 is?
FTP
Connectionless - Best effort (unreliable) - media independent
An alternate HTTP port
TCP

29. In networking terms - What is reliability?
TFTP - Trivial File Transfer Protocol
It means ensuring that each segment that the source sends arrives at the destination
1024 - 49151. Unlike ports with lower numbers - developers of new TCP/UDP services can select a specific number to register with IANA rather than having a number assigned to them. Using registered ports also avoids the additional security restriction
IP. TCP is connection-oriented - and UDP is connectionless but works on the transport layer.

30. When an IP packet is decapsulated - the information in the packet is handed to the upper or lower layers for delivery and processing?
Acknowledgment field significant
10.0.0.0/8 10.0.0.0 to 10.255.255.255 - 172.16.0.0/12 172.16.0.0 to 172.31.255.255 - 192.168.0.0/16 192.168.0.0 to 192.168.255.255
Upper
IRC

31. Routers add routes for the connected networks to their ________________ .
TFTP - Trivial File Transfer Protocol
To track the different conversations crossing the network at the same time
Routing table
Keeping track of the individual conversations taking place between applications on the source and destinations hosts - Segmenting data and adding a header - Using header info to reassemble the segments into application data - Passing the assembled da

32. Which of the following are not functions of the network layer?
Delivery reliability and application data analysis. The first is a transport layer concern - and the second is the presentation layer. Routing - addressing packets with an IP adress - encapsulation and decapsulation are functions of the network layer
Not - these are done by other protocols in other layers
Transport
Data link - physical

33. Which is a connectionless protocol - UDP or TCP?
1024. The lower numbers are the well-known ports.1024 through 49151 are registered ports and used by the host for dynamic port allocation
Static routing
UDP
20 and 8

34. Which of the following are true about static and dynamic routing?
Does not
2nd and third choices are correct--TCP is reliable and connection-oriented. IP is the one that's unreliable and connectionless. IP operates at the network layer.
1024 - 49151. Unlike ports with lower numbers - developers of new TCP/UDP services can select a specific number to register with IANA rather than having a number assigned to them. Using registered ports also avoids the additional security restriction
Dynamic routing adds packet-processing overhead - and routers can use static and dynamic routing simultaneously

35. Ports can be shared at the same time? (t/f)

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

36. What is the proper order of FIN sequence?
Routers (the subnetting process)
It Doesn't - TCP does
Destination device is there - Figures out if it has an active service running and is accepting requests on the right port - Tells the destination device that it wants to communicate on said port
FIN -> FIN.ACK (terminate client to server) - FIN->FIN.ACK->Ack recvd (terminate server to client)

37. TCP is a ________________ layer protocol.
Transport
It is used by both routers and hosts. The second one is incorrect because IP uses addressing information in the header to determine the best path for the packet. 'Reliable' is incorrect because IP is only a 'best effort' protocol
20 and 8
HTTPS (Secure HTTP)

38. An example of a communication that sends a letter to someone without notifying the recipient in advance is called?
Connectionless
To track the different conversations crossing the network at the same time
POP3
Destination network - next-hop - metric

39. Determines how much data a sending host running TCP/IP can transmit before it must receive an acknowledgment
An alternate HTTP port
Does not
49152 - 65535.
Window size

40. Why is IP 'media independent'?
The type-of-service field contains an 8-bit binary value that is used to determine the priority of each packet. This enables QoS (Quality of service) to happen.
It works the same on all Layer 1 media
2nd and third choices are correct--TCP is reliable and connection-oriented. IP is the one that's unreliable and connectionless. IP operates at the network layer.
All

41. If a router needs to send a packet but doesn't know the next hop or destination network - what can it do?
Maximum transmission unit
Forward the packet to the default route interface (gateway) or just drop/discard the packets
Yes - for applications and services such as http - pop - smtp. Client requests services from a specific port.
Acknowledgment and reassembly (receipt of packets and putting them in right order)

42. What is a common device used to divide/break up a broadcast domain into smaller broadcast domains?
Routers (the subnetting process)
Acknowledgment and reassembly (receipt of packets and putting them in right order)
Forward the packet to the default route interface (gateway) or just drop/discard the packets
Maximum transmission unit

43. What are the three basic characteristics of IPv4?
0 - 1023 (total of 1024). The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers for specific uses
To track the different conversations crossing the network at the same time
Connectionless - Best effort (unreliable) - media independent
10.0.0.0/8 10.0.0.0 to 10.255.255.255 - 172.16.0.0/12 172.16.0.0 to 172.31.255.255 - 192.168.0.0/16 192.168.0.0 to 192.168.255.255

44. What is the default DNS port number?
Upper
DNS - video-streaming - VoIP
32 - there are four octets of 8 bits each in an IPv4 address
53

45. IP is designed or not designed to track and manage the flow of packets?
Not - these are done by other protocols in other layers
Dynamic / private
Reliable - connection-oriented protocol (resends if not received)
Next hop - metric and destination network. Routers do not need source address - last hop - or default gateway to find a path to the network.

46. What is the port range for dynamic or private ports
49152 - 65535.
Routing table
Forward the packet to the default route interface (gateway) or just drop/discard the packets
Acknowledgment field significant

47. During data transfer - What is the receiving host responsible for?
Acknowledgment and reassembly (receipt of packets and putting them in right order)
Telnet
Segmentation provides the means to send and receive data when running multiple applications concurrently on a computer
53

48. Which of the following are true about network layer encapsulation?
It adds a header - and adds both source and destination IP addresses. Network layer encapsulation happens only on the original host; other devices can read the data - but they do not remove or alter it until the destination network is reached.
The default gateway address is the address of a router interface that is connected to the same network as the host.
Upper
Web browsing - email - file transfer

49. On a particular network how would you determine the default gateway address for a host?
RIP (Routing Information Protocol)
The default gateway address is the address of a router interface that is connected to the same network as the host.
FIN -> FIN.ACK (terminate client to server) - FIN->FIN.ACK->Ack recvd (terminate server to client)
It adds a header - and adds both source and destination IP addresses. Network layer encapsulation happens only on the original host; other devices can read the data - but they do not remove or alter it until the destination network is reached.

50. How does UDP keep track of sequence numbers?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183