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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. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Identify the device that allows local network computers to communicate w/ devices in other networks.
Network address
Destination is not contacted before a packet is sent.
A. goodput b. throughput c. bandwidth

2. At which layer of the TCP/IP model does ethernet operate?
Show Interfaces
A. media sharing b. logical topology
Network Access
Switch

3. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
A. enable mode b. priviledge executive mode
The magnetic field around the adjacent pairs of wire.
The packets will be delivered and reassembled at destination.
A. show startup-config b. show running-config

4. What are key considering factors when grouping hosts into common networks?
A. copper UTP b. optical fiber
A. purpose b. geographic location c. ownership
Twisting of the cables
A. Physical b. Data Link

5. 2 functions of encapsulation
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
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. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
A. not affected by EMI of RFI b. most expensive type of LAN cabling

6. A company is planning to subnet a network w/ 27 hosts. What would be the subnet mask used for this?
255.255.255.224
DNS
Signal loss can be experienced.
Resolve IPv4 addresses to MAC addresses.

7. Which sublayer of the DLL prepares a signal to be transmitted at the physical layer?
Network Access
A. next-hop b. metric/interface c. destination network address
A default gateway (router).
MAC

8. What is the purpose of a default gateway?
It reduces unnecessary broadcasts.
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
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Identify the device that allows local network computers to communicate w/ devices in other networks.

9. If you have a full-duplex operational network - what can happen?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
Ctrl + Shift + 6
No collisions will occur on this link.
A. MTA b. SMTP

10. What layer encapsulates segments into packets?
A. copper UTP b. optical fiber
Network Layer
A. enable mode b. priviledge executive mode
A. media sharing b. logical topology

11. What would be the response displayed after pinging 127.0.0.1 and there is a 0 packet transmission?
IP is not properly installed
A. they initiate data exchanges b. they may upload data to servers
As the commands are entered.
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

12. What is the primary funcion of the trailer in the Data Link Layer encapsulation?
A. non-deterministic b. less overhead c. collisions exist
A. DNS b. SMTP c. POP
Supports error detection.
255.255.255.224

13. 3 primary functions of the data link layer encapsulation
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
A. addressing b. error detection c. frame delimiting
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
A. minimizing of collisions b. division into broadcast domains

14. 3 common problems w/ a large network
172.16.192.160
A. performance degradation b. security issues c. host identification
A. minimizing of collisions b. division into broadcast domains
A. Physical b. Data Link

15. 3 statements of media acess control
The MAC protocol can be very simple.
A. router b. firewall
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
Identify the device that allows local network computers to communicate w/ devices in other networks.

16. What is the function of the DLL?
A. decentralized resources b. resource sharing w/o a dedicated server
A. copper UTP b. optical fiber
It provides for the exchange of data over a common local media.
Source and Destination IP address

17. A router interface has been assigned an IP address of 172.16.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?
The address of the router that the host will use to 'get to the other side'.
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
Next-Hop Address
172.16.192.160

18. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
Host A
Source Port
0 to 1023
Hub

19. If there is a graphic representation of a company network wiring and equipment - What is this called?
UDP
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
A physical topology.
TCP initializes the sequence numbers for the sessions.

20. 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. show startup-config b. show running-config
A. non-deterministic b. less overhead c. collisions exist
It has expanded adressing capabilities.
Router(config)# hostname Costas

21. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
Router(config)# interface FastEthernet 0/1
A. it has centralized administration b. security is easier to enforce
A. application b. services
Destination Network Address

22. There are 4 different hosts connected to a hub - media is being transfered between 2 of them but the other 2 will also like to transfer media. What must the latest hosts do to transfer the media?
A. MTA b. SMTP
A. performance degradation b. security issues c. host identification
They must wait until the first hosts finish transfering the media.
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

23. 2 characteristics of clients in data networks
A. HTTP b. HTTPS
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
IP is not properly installed
A. they initiate data exchanges b. they may upload data to servers

24. Group of hosts that have identical bit patterns in the high order bits of their addresses
Network
A. performance degradation b. security issues c. host identification
A random delay helps prevent the stations from experiencing another collision during transmission.
80 (HTTP)

25. To make a console connection from a comp to a Cisco router - what cable should be used?
Source and Destination IP address
Rollover cable
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
32 bits

26. What type of routing uses information that is manually entered into the routing table?
A. flow control b. session establishment c. numbering and sequencing
DNS
Static
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

27. What are 3 pieces of info about a route contained in a routing table?
A. next-hop b. metric/interface c. destination network address
32 bits
Application Layer
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other

28. When is a straight-through cable used in a network?
No collisions will occur on this link.
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
When connecting a host to a switch.
A. it has centralized administration b. security is easier to enforce

29. When a network service fails - which port is most often used to access a router for management purposes?
It reduces unnecessary broadcasts.
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Console
A. show startup-config b. show running-config

30. What application layer protocol is used to support file transfers between client and server?
FTP
It provides for the exchange of data over a common local media.
The magnetic field around the adjacent pairs of wire.
Switch

31. What type of network cable is used between a terminal and a console port?
Network
Destination is not contacted before a packet is sent.
A. netstat -r b. route PRINT
Rollover cable

32. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
A. copper UTP b. optical fiber
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Network
Hub

33. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
Switch
Network address
A. performance degradation b. security issues c. host identification
The physical address is added.

34. In a connectionless system - What is correct?
The address of the router that the host will use to 'get to the other side'.
Source and Destination Ports
Twisting of the cables
Destination is not contacted before a packet is sent.

35. What characteristic of an UTP helps reduce interference?
SMB
A. DNS b. SMTP c. POP
Twisting of the cables
They must wait until the first hosts finish transfering the media.

36. What kind of problems are caused by excessive broadcast traffic on network segments?
255.255.255.0
Hosts return to listen-before-transmit mode.
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

37. What is a protocol that provides connectionless network layer services?
IP Protocol
A. larger address space b. data types and classes of service c. authentication and encryption
A. flow control b. session establishment c. numbering and sequencing
0 to 1023

38. What is a component of a routing table entry?
TCP initializes the sequence numbers for the sessions.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Any device whose backoff timer expires first.
Next-Hop Address

39. What is PDU?
Is a layer of specific encapsulation.
A physical topology.
Flash
A. low overhead b. connectionless

40. 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?
A default gateway (router).
Flash
Host A
A. not affected by EMI of RFI b. most expensive type of LAN cabling

41. What are 2 commands used to view a host routing table?
A. netstat -r b. route PRINT
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Source and Destination Ports
MAC

42. 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
Identify the device that allows local network computers to communicate w/ devices in other networks.
A. show startup-config b. show running-config
32 bits

43. What is a benefit of a WAN?
Create signals that represent the bits in each frame for the media.
Host mobility
A. application b. presentation c. session d. transmision e. network f. data link g. physical
The address of the router that the host will use to 'get to the other side'.

44. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
Transport
Flash
Originate data flow.
255.255.255.0

45. 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
A. the router will discard the packet b. the router will send a time exceeded message to the source host
When connecting a host to a switch.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
8

46. 3 statements about routes and their use
A. MTA b. SMTP
MAC
Show Interfaces
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

47. What is the purpose of the TCP/IP Network Application Layer?
A. copper UTP b. optical fiber
Wireless
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
Network Media Control

48. 3 facts about the network portion of an IPv4 address
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
A. purpose b. geographic location c. ownership
Network
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

49. What is the role of MTA in handling email?
IP Protocol
Logical Link Control sublayer
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
To prevent the receiver from being overwhelmed by incoming data.

50. What are 3 properties of contention-based media access for a shared media?
Source and Destination IP address
A. non-deterministic b. less overhead c. collisions exist
UDP
Twisting of the cables