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CCNA - 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. How many host addresses can be assigned to a subnetwork when using the 130.68.0.0 network address w/ a subnet mask of 255.255.248.0?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. the device will still operate at the same Layer 2 address (the address it had before) b. Layer 3 address must me reassigned for it to communicate w/ the network
It does not support encryption.
2046

2. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
It uses support from the lower layers to distinguish between connections to the service.
2046
Transport
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

3. To make a console connection from a comp to a Cisco router - what cable should be used?
Minimal delays in data delivery.
Logical Link Control sublayer
Rollover cable
A. goodput b. throughput c. bandwidth

4. What information is added during encapsulation at OSI Layer 3?
255.255.255.0
Source and Destination IP address
A. replace a switch w/ a router b. subnet the new networks
Wireless

5. statements of IP adressing
A. private addresses are blocked from public internet by routers b. the ip address 127.0.0.1 is the loopback - directs traffic to itself
Ctrl + Shift + 6
Transport
Hub

6. What command can be used to determine if the router has experienced any input or output errors?
Show Interfaces
The physical address is added.
A backbone cable.
It provides for the exchange of data over a common local media.

7. What is the primary rope of the physical layer in transmitting data?
A. media sharing b. logical topology
Create signals that represent the bits in each frame for the media.
A. goodput b. throughput c. bandwidth
Binary ANDing

8. What does the IEEE 802.2 standard represent in Ethernet technologies?
Twisting of the cables
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Logical Link Control sublayer
Next-Hop Address

9. What correctly describes a MAC address?
The address of the router that the host will use to 'get to the other side'.
A default gateway (router).
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. application b. presentation c. session d. transmision e. network f. data link g. physical

10. When destination network is not in the routing table - What are 2 actions the router might take?
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Show Interfaces
A. replace a switch w/ a router b. subnet the new networks
Host A

11. What are 2 forms of application layer software?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. application b. services
Resolve IPv4 addresses to MAC addresses.
A. identifies the communicating applications b. identifies multiple conversations between the hosts

12. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
A. next-hop b. metric/interface c. destination network address
The destination host address.
A random delay helps prevent the stations from experiencing another collision during transmission.
Destination Network Address

13. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
255.255.255.224
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Create signals that represent the bits in each frame for the media.
Network Layer Packet

14. Intermediary devices used to implement security between networks
It uses lasers as the light source.
Is used by the server to resolve names.
A. router b. firewall
UDP

15. Which characteristics describe fiber optic cable?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Network portion
Is used by the server to resolve names.
Any device whose backoff timer expires first.

16. What is a characteristic of a logical point-to-point topology?
IP Protocol
The MAC protocol can be very simple.
A. netstat -r b. route PRINT
It uses support from the lower layers to distinguish between connections to the service.

17. Where is the IOS file stored at?
Flash
Hub
Switch
UTP

18. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
Identify the device that allows local network computers to communicate w/ devices in other networks.
Network Access
Destination Network Address
Binary ANDing

19. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
A. private addresses are blocked from public internet by routers b. the ip address 127.0.0.1 is the loopback - directs traffic to itself
A. netstat -r b. route PRINT
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
The magnetic field around the adjacent pairs of wire.

20. When is a straight-through cable used in a network?
When connecting a host to a switch.
Any device whose backoff timer expires first.
Time-to-live (TTL)
A. physical layer b. DLL layer

21. Important characteristic of UDP
A. perform degradation b. security issues c. host identification
Minimal delays in data delivery.
A. identifies pieces of data as part of the same communication b. ensures the data pieces can be directed to the correct receiving end device
2046

22. What is an automated service that matches resource names w/ required IP addresses?
A. perform degradation b. security issues c. host identification
A. MTA b. SMTP
A. replace a switch w/ a router b. subnet the new networks
DNS

23. 3 protocols that operate in the application layer
A. minimizing of collisions b. division into broadcast domains
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. DNS b. SMTP c. POP
Router(config)# interface FastEthernet 0/1

24. What is the primary purpose of Layer 4?
A. identifies pieces of data as part of the same communication b. ensures the data pieces can be directed to the correct receiving end device
A. minimizing of collisions b. division into broadcast domains
IP Protocol
Identify processes or services that are communicating with end devices.

25. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
172.16.192.160
Static
255.255.255.224
Transport

26. When a device is moved from one network to the other...?
32 bits
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A. show startup-config b. show running-config
A. the device will still operate at the same Layer 2 address (the address it had before) b. Layer 3 address must me reassigned for it to communicate w/ the network

27. 2 features that make switches preferable to hubs
A. larger address space b. data types and classes of service c. authentication and encryption
A. HTTP b. HTTPS
A. minimizing of collisions b. division into broadcast domains
The destination host address.

28. At which layers of the OSI model does ethernet operate?
A. physical layer b. DLL layer
A. it has centralized administration b. security is easier to enforce
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. addressing b. error detection c. frame delimiting

29. 3 features of IPv6
Source and Destination Ports
Console
Wireless
A. larger address space b. data types and classes of service c. authentication and encryption

30. 2 things that will happen if a router receives an ICMP packet which has a TTL value of 1 and the destination host is several hops away
As the commands are entered.
255.255.255.224
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Destination is not contacted before a packet is sent.

31. What are 3 pieces of info about a route contained in a routing table?
A. security is difficult to enforce b. if one of the computers is responding to file sharing requests - that computer is functioning as a server
A. non-deterministic b. less overhead c. collisions exist
Switch
A. next-hop b. metric/interface c. destination network address

32. What do you need to use for an initial configuration on a Cisco router?
Console interface
Twisting of the cables
Is a layer of specific encapsulation.
A. physical layer b. DLL layer

33. What application layer protocol is used to support file transfers between client and server?
FTP
A. MTA b. SMTP
It uses lasers as the light source.
Flash

34. What are 2 common characteristics associated w/ dynamic routing protocols?
They must wait until the first hosts finish transfering the media.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A physical topology.
UDP

35. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
Wireless
SMB
They must wait until the first hosts finish transfering the media.
8

36. What is the purpose of resource records in DNS?
Is used by the server to resolve names.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
The address of the router that the host will use to 'get to the other side'.
Signal loss can be experienced.

37. Network Protocols
RJ-45
A. Physical b. Data Link
Router(config)# interface FastEthernet 0/1
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

38. If there is a graphic representation of a company network wiring and equipment - What is this called?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Supports error detection.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A physical topology.

39. What makes fiber preferable to copper for interconnecting buildings?
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
RJ-45
SSH
255.255.255.224

40. What event occurs during the 3-way handshake?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
Application Layer
TCP initializes the sequence numbers for the sessions.

41. What is a disadvantage of Telnet?
It does not support encryption.
80 (HTTP)
Host mobility
The physical address is added.

42. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
A. security is difficult to enforce b. if one of the computers is responding to file sharing requests - that computer is functioning as a server
IP is not properly installed
Create signals that represent the bits in each frame for the media.
A. addressing b. error detection c. frame delimiting

43. What causes crosstalk within cable pairs when using UTP?
Signal loss can be experienced.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
The magnetic field around the adjacent pairs of wire.
Network address

44. What is the primary purpose of ARP?
Resolve IPv4 addresses to MAC addresses.
2046
A. MTA b. SMTP
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

45. What type of routing uses information that is manually entered into the routing table?
Static
MAC
It provides for the exchange of data over a common local media.
Transport

46. What are 3 common problems w/ large networks?
It provides interface between applications on either end of the network.
A. perform degradation b. security issues c. host identification
A. performance degradation b. security issues c. host identification
A. identifies the communicating applications b. identifies multiple conversations between the hosts

47. Which transport layer protocol provides low overhead and is used for applications that do not require reliable data delivery?
UDP
Router
A. Cat5 UTP b. Cat6 UTP
255.255.255.224

48. 3 statements about routes and their use
A. if destination network is directly connected - router forwards packet to destination host b. if no route exists for the destination and the default route is present - packet if fowarded to the next-hop c. if the originating host has a default gate
A. netstat -r b. route PRINT
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

49. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A random delay helps prevent the stations from experiencing another collision during transmission.
A. DB 60 b. Winchester 15-pin c. smart serial
A. identifies pieces of data as part of the same communication b. ensures the data pieces can be directed to the correct receiving end device
A. DNS b. SMTP c. POP

50. Statements that describe LAN
A random delay helps prevent the stations from experiencing another collision during transmission.
A. HTTP b. HTTPS
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Physical