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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. What are 2 layers of the OSI model that have the same functions as the TCP/IP Network Application Layer?
A. Physical b. Data Link
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
IP is not properly installed
FTP

2. What is a protocol that provides connectionless network layer services?
TCP initializes the sequence numbers for the sessions.
Router(config)# hostname Costas
IP Protocol
A. flow control b. session establishment c. numbering and sequencing

3. 3 statements about routes and their use
No collisions will occur on this link.
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
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
Flash

4. Which device is used to create or divide broadcast domains?
Router
MAC
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
255.255.255.0

5. Default Gateway is incorrect on the host - What is the impact on the communications?
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. physical layer b. DLL layer
A. addressing b. error detection c. frame delimiting
A. low overhead b. connectionless

6. What describes the purpose of default route?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
32 bits
Rollover cable
Network Layer

7. Which characteristics describe fiber optic cable?
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. larger address space b. data types and classes of service c. authentication and encryption
80 (HTTP)
A. performance degradation b. security issues c. host identification

8. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
Window Size
Network Layer Packet
MAC
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

9. What is an automated service that matches resource names w/ required IP addresses?
A physical topology.
A. replace a switch w/ a router b. subnet the new networks
A. larger address space b. data types and classes of service c. authentication and encryption
DNS

10. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
A. purpose b. geographic location c. ownership
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
IP is not properly installed
The address of the router that the host will use to 'get to the other side'.

11. How many bits make up an IPv4 address?
No collisions will occur on this link.
32 bits
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. identifies the communicating applications b. identifies multiple conversations between the hosts

12. 3 features that allow TCP to realibly and accurately track the transmission of data
The physical address is added.
A. flow control b. session establishment c. numbering and sequencing
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. performance degradation b. security issues c. host identification

13. What characteristic of an UTP helps reduce interference?
Hosts return to listen-before-transmit mode.
A. enable mode b. priviledge executive mode
Twisting of the cables
2046

14. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
SMB
A. replace a switch w/ a router b. subnet the new networks
Network Layer Packet
Console interface

15. What device can check for faults - integrity and performance of media?
A backbone cable.
OTDR
Application Layer
A. netstat -r b. route PRINT

16. Why are port numbers included in the TCP header of a segment?
A. performance degradation b. security issues c. host identification
To enable a receiving host to forward the data to the appropriate application.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

17. Where is the IOS file stored at?
A. minimizing of collisions b. division into broadcast domains
Originate data flow.
Flash
SSH

18. Network Protocols
172.16.192.160
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Is used by the server to resolve names.
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations

19. What do the intermediary devices in the network do?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Wireless
The destination host address.
A. addressing b. error detection c. frame delimiting

20. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
TCP initializes the sequence numbers for the sessions.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
Twisting of the cables
A. the router will discard the packet b. the router will send a time exceeded message to the source host

21. statements of IP adressing
2046
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
32 bits
0 to 1023

22. What do end devices do?
SSH
Originate data flow.
A. addressing b. error detection c. frame delimiting
Window Size

23. 2 features that make switches preferable to hubs
A. next-hop b. metric/interface c. destination network address
It has expanded adressing capabilities.
A. minimizing of collisions b. division into broadcast domains
A. DB 60 b. Winchester 15-pin c. smart serial

24. What is the purpose of the TCP/IP Network Application Layer?
Router(config)# hostname Costas
IP is not properly installed
Network Media Control
A. replace a switch w/ a router b. subnet the new networks

25. What networking devices are recommended to be assigned static IP addresses?
The physical address is added.
A. replace a switch w/ a router b. subnet the new networks
To enable a receiving host to forward the data to the appropriate application.
A. servers b. routers c. network printers

26. What is the proper order of the OSI Layers?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
80 (HTTP)
Flash
MAC

27. What is the role of the OSI Application Layer?
It provides interface between applications on either end of the network.
A. performance degradation b. security issues c. host identification
UTP
FTP

28. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
A. MTA b. SMTP
Router(config)# interface FastEthernet 0/1
A. flow control b. session establishment c. numbering and sequencing
A physical topology.

29. When destination network is not in the routing table - What are 2 actions the router might take?
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. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. ethernet utilizes CSMA/CD b. defined as placement of data frames on the media c. DLL protocols define the rules for access to different media
Destination Network Address

30. What are key considering factors when grouping hosts into common networks?
A. purpose b. geographic location c. ownership
It does not support encryption.
Transport
Hosts return to listen-before-transmit mode.

31. 3 factors that should be considered when implementing Layer 2 protocols
A. HTTP b. HTTPS
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
It uses lasers as the light source.
A. media sharing b. logical topology

32. 2 functions of encapsulation
It uses lasers as the light source.
A. flow control b. session establishment c. numbering and sequencing
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. application b. presentation c. session d. transmision e. network f. data link g. physical

33. Statements that describe LAN
A. application b. services
Time-to-live (TTL)
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
A. identifies the communicating applications b. identifies multiple conversations between the hosts

34. An admin needs to keep contents private - which access method should he use?
Router(config)# interface FastEthernet 0/1
Show Interfaces
A. hot keys b. context-sensitive c. command syntax check
SSH

35. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
Source and Destination Ports
0 to 1023
Static
Is used by the server to resolve names.

36. What is an effect of improperly applying a network cable connector?
Network portion
Signal loss can be experienced.
A. router b. firewall
UTP

37. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
Fiber
Hub
When connecting a host to a switch.
Network Media Control

38. After a routers ends its boot sequence - the admin wants to check the routers config. From the EXEC mode - which commands can the admin use?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
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
A. decentralized resources b. resource sharing w/o a dedicated server
A. show startup-config b. show running-config

39. If host A's DG is 10.0.0.1 and host B's DG is 10.0.0.2 - when the router's IP address is 10.0.0.1. Which one will go through?
172.16.192.160
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Host A
Wireless

40. What is the primary reason for developing IPv6?
It has expanded adressing capabilities.
It reduces unnecessary broadcasts.
Static
Network Layer

41. To make a console connection from a comp to a Cisco router - what cable should be used?
32 bits
Ctrl + Shift + 6
Rollover cable
Static

42. What are 2 common characteristics associated w/ dynamic routing protocols?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. decentralized resources b. resource sharing w/o a dedicated server
Host A
Time-to-live (TTL)

43. What statements describe the logical token-passing topology?
Rollover cable
Time-to-live (TTL)
Source and Destination IP address
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

44. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
8
Network address
Rollover cable
Identify the device that allows local network computers to communicate w/ devices in other networks.

45. What do you need to use for an initial configuration on a Cisco router?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Console interface
A. DB 60 b. Winchester 15-pin c. smart serial
Identify processes or services that are communicating with end devices.

46. Important characteristic of UDP
Minimal delays in data delivery.
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Time-to-live (TTL)
The physical address is added.

47. What are the advantages of using a client-server model?
A. it has centralized administration b. security is easier to enforce
Hosts return to listen-before-transmit mode.
32 bits
A. decentralized resources b. resource sharing w/o a dedicated server

48. What is a mechanism used by TCP to provide flow control as segments travel from source to destination?
Window Size
Collisions can decrease network performance.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Originate data flow.

49. What makes fiber preferable to copper for interconnecting buildings?
A. it has centralized administration b. security is easier to enforce
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Minimal delays in data delivery.

50. 3 common problems w/ a large network
The address of the router that the host will use to 'get to the other side'.
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. performance degradation b. security issues c. host identification
Network