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 kind of problems are caused by excessive broadcast traffic on network segments?
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
A. show startup-config b. show running-config
IP is not properly installed
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

2. If you have a small network w/ 3 computers...
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
The MAC protocol can be very simple.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
A. servers b. routers c. network printers

3. What are key considering factors when grouping hosts into common networks?
A. purpose b. geographic location c. ownership
Source and Destination IP address
Next-Hop Address
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

4. What networking devices are recommended to be assigned static IP addresses?
2046
A physical topology.
0 to 1023
A. servers b. routers c. network printers

5. What is a default gateway address?

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6. What are 2 common characteristics associated w/ dynamic routing protocols?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
To enable a receiving host to forward the data to the appropriate application.
Minimal delays in data delivery.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info

7. What application layer protocol is used to support file transfers between client and server?
Window Size
FTP
Network portion
A. addressing b. error detection c. frame delimiting

8. 3 measures of data transfer
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
A. Physical b. Data Link
A. goodput b. throughput c. bandwidth
Transport

9. After an ethernet collision - which device has priority to transmit data?
It provides interface between applications on either end of the network.
Any device whose backoff timer expires first.
A. replace a switch w/ a router b. subnet the new networks
It provides for the exchange of data over a common local media.

10. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
0 to 1023
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Router(config)# hostname Costas
UTP

11. Intermediary devices used to implement security between networks
To prevent the receiver from being overwhelmed by incoming data.
UTP
A. router b. firewall
UDP

12. What does the IEEE 802.2 standard represent in Ethernet technologies?
The physical address is added.
TCP initializes the sequence numbers for the sessions.
Logical Link Control sublayer
Host mobility

13. What method of signal transmission uses radio waves to carry signals?
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. application b. services
Network Layer Packet
Wireless

14. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
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
80 (HTTP)
Is used by the server to resolve names.

15. What can get you to an outside network?
A default gateway (router).
Source and Destination Ports
TCP initializes the sequence numbers for the sessions.
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment

16. 3 statements about the role of routers in the network
A. they segment broadcast domains b. they interconnect different network technologies c. each router interface requires a separate network or subnet
A. replace a switch w/ a router b. subnet the new networks
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Switch

17. What are 3 pieces of info about a route contained in a routing table?
A. next-hop b. metric/interface c. destination network address
Any device whose backoff timer expires first.
A. application b. presentation c. session d. transmision e. network f. data link g. physical
Hub

18. Group of hosts that have identical bit patterns in the high order bits of their addresses
To facilitate the entry and exit of data on media.
It uses support from the lower layers to distinguish between connections to the service.
Network Access
Network

19. When destination network is not in the routing table - What are 2 actions the router might take?
Twisting of the cables
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Source and Destination Ports
No collisions will occur on this link.

20. 3 statements of media acess control
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
255.255.255.0
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
It has expanded adressing capabilities.

21. 3 characteristics of valid Ethernet Layer 2 addresses
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Any device whose backoff timer expires first.
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
To facilitate the entry and exit of data on media.

22. What is the role of MTA in handling email?
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. MTA b. SMTP
To facilitate the entry and exit of data on media.
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery

23. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
IP Protocol
Is a layer of specific encapsulation.
0 to 1023
Network Media Control

24. How many bits make up an IPv4 address?
Logical Link Control sublayer
No collisions will occur on this link.
A random delay helps prevent the stations from experiencing another collision during transmission.
32 bits

25. What is a benefit of a WAN?
Console interface
Host mobility
A. DB 60 b. Winchester 15-pin c. smart serial
Application Layer

26. What is the primary reason for developing IPv6?
It has expanded adressing capabilities.
Twisting of the cables
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
UDP

27. If you have an Ethernet Frame w/ a Header - Data and a Trailer. It is a...?
Router(config)# interface FastEthernet 0/1
Console interface
Transport
Network Layer Packet

28. What is the primary purpose of Layer 4?
172.16.192.160
Identify processes or services that are communicating with end devices.
A. physical layer b. DLL layer
Rollover cable

29. Which 2 options represent Layer 4 addressing?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
172.16.192.160
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. flow control b. session establishment c. numbering and sequencing

30. What is the purpose of resource records in DNS?
A. geographic scope of the network b. physical layer implementation c. number of hosts to be interconnected
A. application b. services
Is used by the server to resolve names.
Show Interfaces

31. 2 characteristics of peer-2-peer
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Rollover cable
A. decentralized resources b. resource sharing w/o a dedicated server
A. netstat -r b. route PRINT

32. What are the advantages of using a client-server model?
A. DNS b. SMTP c. POP
A. it has centralized administration b. security is easier to enforce
Fiber
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

33. What determines the method of media access control?
A. media sharing b. logical topology
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
DNS
Router(config)# interface FastEthernet 0/1

34. What can you identify when you examine the Network Layer header?
Hub
Twisting of the cables
Router(config)# interface FastEthernet 0/1
The destination host address.

35. 3 terms that define the forms of help available within the Cisco IOS
A. hot keys b. context-sensitive c. command syntax check
DNS
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. it has centralized administration b. security is easier to enforce

36. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Network address
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A backbone cable.
RJ-45

37. At which layers of the OSI model does ethernet operate?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Supports error detection.
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.
A. physical layer b. DLL layer

38. In business LANs - which connector is used w/ twisted-pair networking cable?
Host mobility
Rollover cable
RJ-45
Originate data flow.

39. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
SMB
TCP initializes the sequence numbers for the sessions.
OTDR
A. addressing b. error detection c. frame delimiting

40. Which layer supplies services and allows user interface?
Any device whose backoff timer expires first.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Application Layer
IP Protocol

41. What are 3 common problems w/ large networks?
It provides for the exchange of data over a common local media.
A. perform degradation b. security issues c. host identification
A. it has centralized administration b. security is easier to enforce
It does not support encryption.

42. If there are potential electrical and/or electromagnetic hazards - what type of media is recommended for backbone cabling?
Fiber
A. replace a switch w/ a router b. subnet the new networks
Next-Hop Address
A. minimizing of collisions b. division into broadcast domains

43. What command can be used to determine if the router has experienced any input or output errors?
Show Interfaces
To enable a receiving host to forward the data to the appropriate application.
Fiber
Ctrl + Shift + 6

44. Important characteristic of UDP
Minimal delays in data delivery.
Static
To enable a receiving host to forward the data to the appropriate application.
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

45. What are 2 forms of application layer software?
Is used by the server to resolve names.
A. next-hop b. metric/interface c. destination network address
A. application b. services
2046

46. 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. consumes network bandwidth b. increases overhead on network c. interrupts other host functions
A. media sharing b. logical topology
A. the router will discard the packet b. the router will send a time exceeded message to the source host
UDP

47. What are 2 protocols for transfering web resources?
A. HTTP b. HTTPS
A. enable mode b. priviledge executive mode
A. physical layer b. DLL layer
Router

48. What is the primary purpose of ARP?
A. show startup-config b. show running-config
Resolve IPv4 addresses to MAC addresses.
Network address
172.16.192.160

49. 3 protocols that operate in the application layer
A. perform degradation b. security issues c. host identification
A. DNS b. SMTP c. POP
Time-to-live (TTL)
Flash

50. What connectors are commonly associated w/ Cisco's V.35 serial cables?
A. DB 60 b. Winchester 15-pin c. smart serial
A. physical layer b. DLL layer
8
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