Test your basic knowledge |

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 3 pieces of info about a route contained in a routing table?
A backbone cable.
Window Size
A. next-hop b. metric/interface c. destination network address
Time-to-live (TTL)

2. What is a component of a routing table entry?
Next-Hop Address
A. physical layer b. DLL layer
Time-to-live (TTL)
Router(config)# hostname Costas

3. What information is added during encapsulation at OSI Layer 3?
Source and Destination IP address
Host A
FTP
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

4. What is a drawback of the CSMA/CD access method?
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)
Twisting of the cables
Collisions can decrease network performance.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

5. 3 properties of peer-2-peer applications
A. acts as both client and server w/ same communication b. hybrid mode includes a centralized directory of files c. can be used in client-server networks
Binary ANDing
TCP initializes the sequence numbers for the sessions.
Window Size

6. When a network service fails - which port is most often used to access a router for management purposes?
Source and Destination IP address
Network Access
Console
A. show startup-config b. show running-config

7. What are 2 common characteristics associated w/ dynamic routing protocols?
The packets will be delivered and reassembled at destination.
A. router b. firewall
Is used by the server to resolve names.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

8. 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
Rollover cable
Fiber
Transport

9. What is a default gateway address?

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10. 2 characteristics of clients in data networks
A. next-hop b. metric/interface c. destination network address
A. they initiate data exchanges b. they may upload data to servers
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Router(config)# interface FastEthernet 0/1

11. What is a characteristic of a logical point-to-point topology?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. decentralized resources b. resource sharing w/o a dedicated server
The MAC protocol can be very simple.
A default gateway (router).

12. What describes the purpose of default route?
It reduces unnecessary broadcasts.
A. identifies the communicating applications b. identifies multiple conversations between the hosts
TCP initializes the sequence numbers for the sessions.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

13. If you have a full-duplex operational network - what can happen?
Console
It has expanded adressing capabilities.
No collisions will occur on this link.
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs

14. Which characteristics describe fiber optic cable?
A backbone cable.
2046
OTDR
A. not affected by EMI of RFI b. most expensive type of LAN cabling

15. What is a protocol that provides connectionless network layer services?
IP Protocol
Console
To enable a receiving host to forward the data to the appropriate application.
SSH

16. In a connectionless system - What is correct?
The physical address is added.
Destination is not contacted before a packet is sent.
They must wait until the first hosts finish transfering the media.
MAC

17. Intermediary devices used to implement security between networks
A. HTTP b. HTTPS
Hosts return to listen-before-transmit mode.
A. minimizing of collisions b. division into broadcast domains
A. router b. firewall

18. What command can be used to determine if the router has experienced any input or output errors?
FTP
The packets will be delivered and reassembled at destination.
Show Interfaces
A. decentralized resources b. resource sharing w/o a dedicated server

19. 3 statements about routes and their use
0 to 1023
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
A. performance degradation b. security issues c. host identification
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

20. 2 characteristics of peer-2-peer
Network portion
8
A. decentralized resources b. resource sharing w/o a dedicated server
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

21. What is the primary purpose of ARP?
32 bits
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
Resolve IPv4 addresses to MAC addresses.
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

22. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
Source Port
80 (HTTP)
It provides interface between applications on either end of the network.
Console

23. statements of IP adressing
A. performance degradation b. security issues c. host identification
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. low overhead b. connectionless
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential

24. What connectors are commonly associated w/ Cisco's V.35 serial cables?
0 to 1023
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. DB 60 b. Winchester 15-pin c. smart serial

25. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
0 to 1023
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Host mobility

26. What is an automated service that matches resource names w/ required IP addresses?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Source and Destination Ports
DNS
Network Layer

27. What event occurs during the 3-way handshake?
Show Interfaces
TCP initializes the sequence numbers for the sessions.
A. copper UTP b. optical fiber
A. hot keys b. context-sensitive c. command syntax check

28. What device can check for faults - integrity and performance of media?
Supports error detection.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Fiber
OTDR

29. What is a benefit of a WAN?
Logical Link Control sublayer
The destination host address.
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
Host mobility

30. What is the role of MTA in handling email?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Logical Link Control sublayer
Network portion
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

31. What do you need to use for an initial configuration on a Cisco router?
A. media sharing b. logical topology
Network Layer Packet
Console interface
Wireless

32. What are 3 properties of contention-based media access for a shared media?
It uses support from the lower layers to distinguish between connections to the service.
Is a layer of specific encapsulation.
A. non-deterministic b. less overhead c. collisions exist
It does not support encryption.

33. How does the application layer on a server process multiple client requests for services?
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
It uses support from the lower layers to distinguish between connections to the service.
A. Physical b. Data Link

34. Which 2 options represent Layer 4 addressing?
UDP
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Flash

35. At which layer of the TCP/IP model does ethernet operate?
Router(config)# interface FastEthernet 0/1
The MAC protocol can be very simple.
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Network Access

36. In business LANs - which connector is used w/ twisted-pair networking cable?
Static
Rollover cable
RJ-45
Network Access

37. Why are port numbers included in the TCP header of a segment?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
To enable a receiving host to forward the data to the appropriate application.
A. enable mode b. priviledge executive mode
Network address

38. What are 3 common problems w/ large networks?
0 to 1023
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
The destination host address.
A. perform degradation b. security issues c. host identification

39. What layer encapsulates segments into packets?
RJ-45
A. they initiate data exchanges b. they may upload data to servers
Network Layer
A. netstat -r b. route PRINT

40. To make a console connection from a comp to a Cisco router - what cable should be used?
Identify the device that allows local network computers to communicate w/ devices in other networks.
Network Layer
Rollover cable
A. HTTP b. HTTPS

41. What kind of problems are caused by excessive broadcast traffic on network segments?
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
Any device whose backoff timer expires first.
A. next-hop b. metric/interface c. destination network address
IP is not properly installed

42. What is the proper order of the OSI Layers?
Next-Hop Address
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Static

43. When a collision occurs using CSMA/CD - how do hosts w/ data to transmit respond after the backoff period expires?
A. media sharing b. logical topology
A. purpose b. geographic location c. ownership
Hosts return to listen-before-transmit mode.
The destination host address.

44. What is the primary function of encapsulating packets into frames?
To facilitate the entry and exit of data on media.
Rollover cable
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. goodput b. throughput c. bandwidth

45. What are 2 commands used to view a host routing table?
Hub
A. media sharing b. logical topology
A. netstat -r b. route PRINT
Minimal delays in data delivery.

46. What are 2 protocols for transfering web resources?
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
IP Protocol
A. HTTP b. HTTPS
To prevent the receiver from being overwhelmed by incoming data.

47. What is the role of the OSI Application Layer?
Rollover cable
It provides interface between applications on either end of the network.
Network Layer Packet
Flash

48. What application layer protocol is used to support file transfers between client and server?
The destination host address.
A. larger address space b. data types and classes of service c. authentication and encryption
FTP
A. HTTP b. HTTPS

49. What do the intermediary devices in the network do?
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
A. acts as both client and server w/ same communication b. hybrid mode includes a centralized directory of files c. can be used in client-server networks
Signal loss can be experienced.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

50. What type of routing uses information that is manually entered into the routing table?
Static
A. define structure of layer specific PDUs b. outline the functions necessary for communication between layers c. require layer dependent capsulations
A. larger address space b. data types and classes of service c. authentication and encryption
It provides for the exchange of data over a common local media.