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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. What is the proper order of FIN sequence?
Dynamic / private
The default gateway address is the address of a router interface that is connected to the same network as the host.
Acknowledgment and reassembly (receipt of packets and putting them in right order)
FIN -> FIN.ACK (terminate client to server) - FIN->FIN.ACK->Ack recvd (terminate server to client)

2. For a network layer packet to travel between hosts - it must be handed down to the _________________ layer - for another layer of encapsulation called framing - and then encoded and put onto the ____________ layer to be sent to the next router.
Data link - physical
Not - these are done by other protocols in other layers
DNS - video-streaming - VoIP
Window size

3. Which of the following are true about static and dynamic routing?
Dynamic routing adds packet-processing overhead - and routers can use static and dynamic routing simultaneously
FIN -> FIN.ACK (terminate client to server) - FIN->FIN.ACK->Ack recvd (terminate server to client)
1
An alternate HTTP port

4. The value of the ACK number field is equal to the client ISN plus ___________ (number)?
1
Decapsulation
Telnet
Source and destination (ports) - Sequencing - Acknowledgement - Flow control

5. IP requires that each sending and receiving device have a __________ IP address.
An alternate HTTP port
Unique
FIN -> FIN.ACK (terminate client to server) - FIN->FIN.ACK->Ack recvd (terminate server to client)
Segmentation provides the means to send and receive data when running multiple applications concurrently on a computer

6. How many bits are in an IPv6 address?
FTP
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
128
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

7. Port 520 is?
Source and destination (ports) - Sequencing - Acknowledgement - Flow control
Does not
RIP (Routing Information Protocol)
Segmentation provides the means to send and receive data when running multiple applications concurrently on a computer

8. IP is designed or not designed to track and manage the flow of packets?
Does not
Not - these are done by other protocols in other layers
Reduced network bandwidth - increased overhead - and reduced host functions. The other answers are part of solutions to excessive broadcasts
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.

9. Which protocol provides just the basic functions for efficiently delivering data pieces between appropriate applications - TCP or UDP?

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10. UDP stands for?
It works the same on all Layer 1 media
User Datagram Protocol
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
Allows the transport layer function on the destination host to reassemble segments in the right order

11. Which of the following are true about network layer encapsulation?
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
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
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.
Yes - for applications and services such as http - pop - smtp. Client requests services from a specific port.

12. What is contained in the header of each segment or datagram?
The source and destination port number
SYN -> SYN.ACK->SEQ - ACK = SEQ+1 - SEQ is a random #
Does not
TCP uses flow control

13. Ephermeral port is what type of port
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
TCP
Dynamic / private
Acknowledgment field significant

14. What is the netstat utility used for on a host?
It is the most common - and it encapsulates transport layer segments
FIN
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
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

15. Routers add routes for the connected networks to their ________________ .
Destination network - next-hop - metric
Routing table
Decapsulation
IRC

16. Port 194 is?
IRC
Reduced network bandwidth - increased overhead - and reduced host functions. The other answers are part of solutions to excessive broadcasts
Allows the transport layer function on the destination host to reassemble segments in the right order
Routers (the subnetting process)

17. What are three key factors to consider when grouping hosts into a common network?
Unique
Forward the packet to the default route interface (gateway) or just drop/discard the packets
Purpose - ownership - and geographic location are key ways to divide a network
Routers (the subnetting process)

18. Pieces of information about a route that a routing table contains
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
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
Next hop - metric and destination network. Routers do not need source address - last hop - or default gateway to find a path to the network.
Addressing packets with IP addresses - Encapsulation - Routing - Decapsulation

19. The three-way handshake performs what three functions?
False. It's like a file - only one process can read/write.
Yes - for applications and services such as http - pop - smtp. Client requests services from a specific port.
Telnet
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

20. Port 110 is?
POP3
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
Maximum transmission unit
The default gateway address is the address of a router interface that is connected to the same network as the host.

21. Why is IP 'media independent'?
53
It works the same on all Layer 1 media
FIN -> FIN.ACK (terminate client to server) - FIN->FIN.ACK->Ack recvd (terminate server to client)
Purpose - ownership - and geographic location are key ways to divide a network

22. On a particular network how would you determine the default gateway address for a host?
Unique
The default gateway address is the address of a router interface that is connected to the same network as the host.
The router matches the destination address in the packet header with the destination network of a route in the routing table and forwards the packet to the next-hop router specified by that route
20 and 8

23. MTU stands for ?
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
SMTP
HTTPS (Secure HTTP)
Maximum transmission unit

24. 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
Synchronize sequence numbers
SYN -> SYN.ACK->SEQ - ACK = SEQ+1 - SEQ is a random #
Netstat -r and route print

25. Which protocol ensures more reliable delivery between applications - TCP or UDP?
UDP
TCP. It makes larger demands on a network
The router matches the destination address in the packet header with the destination network of a route in the routing table and forwards the packet to the next-hop router specified by that route
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

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

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27. ACK is?
1024. The lower numbers are the well-known ports.1024 through 49151 are registered ports and used by the host for dynamic port allocation
Reduced network bandwidth - increased overhead - and reduced host functions. The other answers are part of solutions to excessive broadcasts
Acknowledgment field significant
Ephermeral

28. Are well known ports registered
Yes - for applications and services such as http - pop - smtp. Client requests services from a specific port.
The router matches the destination address in the packet header with the destination network of a route in the routing table and forwards the packet to the next-hop router specified by that route
To track the different conversations crossing the network at the same time
0 - 1023 (total of 1024). The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers for specific uses

29. What is the port range for well known ports
0 - 1023 (total of 1024). The Internet Assigned Numbers Authority (IANA) is responsible for maintaining the official assignments of port numbers for specific uses
Data link - physical
1
RIP (Routing Information Protocol)

30. Port 443 is?
HTTPS (Secure HTTP)
Source and destination (ports) - Sequencing - Acknowledgement - Flow control
Allows the transport layer function on the destination host to reassemble segments in the right order
Segmentation provides the means to send and receive data when running multiple applications concurrently on a computer

31. Name the private address blocks
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
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.
Unique
UDP

32. What are the transport layer's responsibilities?
Dynamic / private
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
Routers (the subnetting process)
Allows the transport layer function on the destination host to reassemble segments in the right order

33. In networking terms - What is reliability?
TCP uses flow control
The router matches the destination address in the packet header with the destination network of a route in the routing table and forwards the packet to the next-hop router specified by that route
It means ensuring that each segment that the source sends arrives at the destination
Static routing

34. An example of a communication that sends a letter to someone without notifying the recipient in advance is called?
Connectionless
Web browsing - email - file transfer
Allows the transport layer function on the destination host to reassemble segments in the right order
17 (A flag is set in the segment header. If this flag actually reads 17 - it is identified as a UDP header)

35. The router a network uses to send and receive messages beyond the network is called a ___________ router.
Forward the packet to the default route interface (gateway) or just drop/discard the packets
Gateway
Allows the transport layer function on the destination host to reassemble segments in the right order
FIN

36. Which of the following is true about IP?

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37. What does segmentation provide to communications?
Dynamic / private
Segmentation provides the means to send and receive data when running multiple applications concurrently on a computer
Static routing
Packet

38. What is the purpose of sequence numbers?
Acknowledgment field significant
Decapsulation
An alternate HTTP port
Allows the transport layer function on the destination host to reassemble segments in the right order

39. TCP is a ________________ layer protocol.
An alternate HTTP port
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.
Decapsulation
Transport

40. SYN is?
An alternate HTTP port
It Doesn't - TCP does
1024. The lower numbers are the well-known ports.1024 through 49151 are registered ports and used by the host for dynamic port allocation
Synchronize sequence numbers

41. TCP header provides for
SYN -> SYN.ACK->SEQ - ACK = SEQ+1 - SEQ is a random #
Forward the packet to the default route interface (gateway) or just drop/discard the packets
Source and destination (ports) - Sequencing - Acknowledgement - Flow control
Connectionless - Best effort (unreliable) - media independent

42. MSN messenger uses TCP or UDP?
Netstat -r and route print
Allows the transport layer function on the destination host to reassemble segments in the right order
Addressing packets with IP addresses - Encapsulation - Routing - Decapsulation
TCP

43. What two commands can be used to view a host's routing table?
It is the most common - and it encapsulates transport layer segments
Netstat -r and route print
Routing table
Yes - for applications and services such as http - pop - smtp. Client requests services from a specific port.

44. What is the purpose of the ToS field in the IPv4 header?
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.
Segmentation provides the means to send and receive data when running multiple applications concurrently on a computer
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
HTTPS (Secure HTTP)

45. How many bits are in an IPv4 address?
32 - there are four octets of 8 bits each in an IPv4 address
Transport
POP3
Unique

46. Encapsulation occurs at all - some or none of the layers of the OSI model?
All
Destination network - next-hop - metric
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.
Telnet

47. Which of the following are true about TCP and IP?

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48. When an IP packet is decapsulated - the information in the packet is handed to the upper or lower layers for delivery and processing?
Acknowledgment and reassembly (receipt of packets and putting them in right order)
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.
Upper
FTP

49. What is the port range for Registered ports
It is the most common - and it encapsulates transport layer segments
SYN -> SYN.ACK->SEQ - ACK = SEQ+1 - SEQ is a random #
Addressing packets with IP addresses - Encapsulation - Routing - Decapsulation
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

50. End systems use port numbers to select the proper application. What is the lowest port number that can be dynamically assigned by the host system? 1 - 128 - 256 or 1024?
Data link - physical
1024. The lower numbers are the well-known ports.1024 through 49151 are registered ports and used by the host for dynamic port allocation
User Datagram Protocol
Routers (the subnetting process)