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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. Which 2 options represent Layer 4 addressing?
A. purpose b. geographic location c. ownership
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. physical layer b. DLL layer
It provides interface between applications on either end of the network.

2. When a network service fails - which port is most often used to access a router for management purposes?
It has expanded adressing capabilities.
Console
Network Media Control
Host uses a default route to transfer data to host outside the local network when no other route to the destination exists.

3. Given IP 172.16.134.64 and S/M 255.255.255.224 - this IP is an...?
Network address
A. DNS b. SMTP c. POP
Router(config)# interface FastEthernet 0/1
A. decentralized resources b. resource sharing w/o a dedicated server

4. 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
It provides for the exchange of data over a common local media.
A. router b. firewall
A. identifies the communicating applications b. identifies multiple conversations between the hosts

5. What determines the method of media access control?
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows
Hub
A. media sharing b. logical topology
Network portion

6. Which IP packet field will prevent endless loops?
Console
Network portion
Time-to-live (TTL)
To facilitate the entry and exit of data on media.

7. What is the role of the OSI Application Layer?
A. goodput b. throughput c. bandwidth
It provides interface between applications on either end of the network.
DNS
A. perform degradation b. security issues c. host identification

8. If you want to connect 4 hosts in a home network - what would be the best deviced to be used?
0 to 1023
Switch
Physical
SSH

9. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
SSH
UTP
Network Layer Packet
Identify the device that allows local network computers to communicate w/ devices in other networks.

10. 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
Fiber
They must wait until the first hosts finish transfering the media.
A. the router will discard the packet b. the router will send a time exceeded message to the source host
It provides for the exchange of data over a common local media.

11. After an ethernet collision - which device has priority to transmit data?
Console interface
Any device whose backoff timer expires first.
IP is not properly installed
A. show startup-config b. show running-config

12. Which combination of keys can be used to interrupt a ping or traceroute process?
Ctrl + Shift + 6
To prevent the receiver from being overwhelmed by incoming data.
Console
A. minimizing of collisions b. division into broadcast domains

13. What is an automated service that matches resource names w/ required IP addresses?
DNS
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
Logical Link Control sublayer
255.255.255.0

14. What is the role of MTA in handling email?
Create signals that represent the bits in each frame for the media.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
A. receives emails from clients MUA b. uses SMTP to route email between servers c. passes email to MDA for final delivery
Minimal delays in data delivery.

15. 2 common methods for settin a UTP ethernet port to MDI or MDIX?
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Switch
A. greater distances per cable run b. limited susceptibility to EMI/RFI c. greater bandwidth potential
TCP initializes the sequence numbers for the sessions.

16. What are 3 properties of contention-based media access for a shared media?
Router
A. non-deterministic b. less overhead c. collisions exist
A. performance degradation b. security issues c. host identification
Any device whose backoff timer expires first.

17. If there is a graphic representation of a company network wiring and equipment - What is this called?
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
Network portion
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A physical topology.

18. What command is used to change the default name to 'Costas'?
Router(config)# hostname Costas
DNS
A. application b. services
Create signals that represent the bits in each frame for the media.

19. There are too many broadcasts on switches - what can be done?
A. Cat5 UTP b. Cat6 UTP
A. replace a switch w/ a router b. subnet the new networks
A. non-deterministic b. less overhead c. collisions exist
Resolve IPv4 addresses to MAC addresses.

20. Group of hosts that have identical bit patterns in the high order bits of their addresses
A. application b. services
Network
A. next-hop b. metric/interface c. destination network address
80 (HTTP)

21. When do changes take effect in a Cisco router?
A backbone cable.
It reduces unnecessary broadcasts.
As the commands are entered.
A. replace a switch w/ a router b. subnet the new networks

22. What event occurs during the 3-way handshake?
FTP
TCP initializes the sequence numbers for the sessions.
SMB
A. physical layer b. DLL layer

23. What is dinamically selected by the source host when forwarding data?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. performance degradation b. security issues c. host identification
Collisions can decrease network performance.
Source Port

24. What are 2 commands used to view a host routing table?
A. netstat -r b. route PRINT
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
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
Logical Link Control sublayer

25. Which layer supplies services and allows user interface?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Application Layer
Resolve IPv4 addresses to MAC addresses.

26. Where is the IOS file stored at?
Hosts return to listen-before-transmit mode.
A. addressing b. error detection c. frame delimiting
Flash
SMB

27. On a ethernet segment - why do hosts that experience a collision use a random delay before attempting to transmit?
Network Layer
A random delay helps prevent the stations from experiencing another collision during transmission.
To prevent the receiver from being overwhelmed by incoming data.
MAC

28. Which OSI model layer is responsible for regulating the flow of information from source to destination - reliably and accurately?
A. hot keys b. context-sensitive c. command syntax check
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
Transport
SMB

29. To make a console connection from a comp to a Cisco router - what cable should be used?
Rollover cable
Is used by the server to resolve names.
Host mobility
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

30. 2 characteristics of clients in data networks
Logical Link Control sublayer
255.255.255.0
A. perform degradation b. security issues c. host identification
A. they initiate data exchanges b. they may upload data to servers

31. Why are port numbers included in the TCP header of a segment?
Any device whose backoff timer expires first.
172.16.192.160
A. flow control b. session establishment c. numbering and sequencing
To enable a receiving host to forward the data to the appropriate application.

32. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
Destination Network Address
Destination is not contacted before a packet is sent.
A. larger address space b. data types and classes of service c. authentication and encryption
Network Layer

33. What is the proper order of the OSI Layers?
Window Size
Network portion
A. Cat5 UTP b. Cat6 UTP
A. application b. presentation c. session d. transmision e. network f. data link g. physical

34. 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
SSH
A. media sharing b. logical topology
Hosts return to listen-before-transmit mode.

35. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
A. application b. presentation c. session d. transmision e. network f. data link g. physical
A. copper UTP b. optical fiber
Router(config)# interface FastEthernet 0/1
Network Layer

36. 3 functions of the upper data link sublayer in the OSI model
A. identifies network layer protocol b. makes the connection w/ the upper layers c. insulates network layer protocols from changes in physical equipment
Ctrl + Shift + 6
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

37. 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?
Next-Hop Address
Network address
A. show startup-config b. show running-config
255.255.255.224

38. What is the purpose of a default gateway?
It uses lasers as the light source.
Identify the device that allows local network computers to communicate w/ devices in other networks.
Router(config)# interface FastEthernet 0/1
A. DNS b. SMTP c. POP

39. What are the advantages of using a client-server model?
Switch
UDP
A. it has centralized administration b. security is easier to enforce
A. low overhead b. connectionless

40. When a device is moved from one network to the other...?
80 (HTTP)
Hub
A. the router will discard the packet b. the router will send a time exceeded message to the source host
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

41. What application layer protocol is used to support file transfers between client and server?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Binary ANDing
FTP
A. netstat -r b. route PRINT

42. 3 features that allow TCP to realibly and accurately track the transmission of data
Collisions can decrease network performance.
A. goodput b. throughput c. bandwidth
A. flow control b. session establishment c. numbering and sequencing
A. show startup-config b. show running-config

43. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
A. they initiate data exchanges b. they may upload data to servers
Application Layer
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
0 to 1023

44. What is the purpose of the TCP/IP Network Application Layer?
As the commands are entered.
A. not affected by EMI of RFI b. most expensive type of LAN cabling
Network Media Control
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

45. What are 3 pieces of info about a route contained in a routing table?
A. addressing b. error detection c. frame delimiting
A. next-hop b. metric/interface c. destination network address
Time-to-live (TTL)
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

46. In a connectionless system - What is correct?
A. addressing b. error detection c. frame delimiting
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
Destination is not contacted before a packet is sent.
The physical address is added.

47. What type of routing uses information that is manually entered into the routing table?
Static
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
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 random delay helps prevent the stations from experiencing another collision during transmission.

48. What is the name of the application layer protocol used for file sharing on Microsoft Networks?
A. HTTP b. HTTPS
A. it has centralized administration b. security is easier to enforce
A. hot keys b. context-sensitive c. command syntax check
SMB

49. What process routers use to determine the subnet network address w/ an IP address and a subnet mask?
32 bits
Binary ANDing
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Wireless

50. Which device is used to create or divide broadcast domains?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
Router
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Logical Link Control sublayer