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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 determines the method of media access control?
A. decentralized resources b. resource sharing w/o a dedicated server
A. larger address space b. data types and classes of service c. authentication and encryption
Network Layer Packet
A. media sharing b. logical topology

2. An admin wants to evaluate all traffic in a network. To ensure that all packets are captured - what network device should be used?
A. identifies the communicating applications b. identifies multiple conversations between the hosts
Host mobility
Hub
A. enable mode b. priviledge executive mode

3. If the router says: 'Switch-East4#' What identifies the CLI mode represented?
The magnetic field around the adjacent pairs of wire.
To facilitate the entry and exit of data on media.
A. enable mode b. priviledge executive mode
A. non-deterministic b. less overhead c. collisions exist

4. What is a protocol that provides connectionless network layer services?
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet
IP Protocol
A. automatic detection and negotiating of MDI/MDIX operation of the port b. enabling the mechanism to electrically swap the transmit and receive pairs
Transport

5. Host1 is in the process of setting up a TCP session with Host2. Host1 sent a SYN message to begin establishment - what happens next?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format
Wireless
TCP initializes the sequence numbers for the sessions.

6. What are 3 common problems w/ large networks?
Router(config)# hostname Costas
Collisions can decrease network performance.
UTP
A. perform degradation b. security issues c. host identification

7. What is the purpose of the TCP/IP Network Application Layer?
A. goodput b. throughput c. bandwidth
Network Media Control
It is used for timing synchronization w/ alternating patterns of 1s and 0s.
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1

8. What method of signal transmission uses radio waves to carry signals?
A. decentralized resources b. resource sharing w/o a dedicated server
Wireless
No collisions will occur on this link.
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

9. If there is a graphic representation of a company network wiring and equipment - What is this called?
A. the router will discard the packet b. the router will send a time exceeded message to the source host
A. HTTP b. HTTPS
A physical topology.
255.255.255.224

10. What is dinamically selected by the source host when forwarding data?
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Source Port
UDP
A. located in a single geographical area b. administered by a single organization c. each end is connected to a Telecommunication Service Provider (TSP)

11. Important characteristic of UDP
0 to 1023
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
Minimal delays in data delivery.
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

12. 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?
2046
They must wait until the first hosts finish transfering the media.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
Wireless

13. During a TCP session - if packets arrive out of order - what will happen?
The packets will be delivered and reassembled at destination.
32 bits
A. show startup-config b. show running-config
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

14. What command will you use to place the router into the correct mode to configure an appropiate interface to connect a LAN?
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Source Port
A. replace a switch w/ a router b. subnet the new networks
Router(config)# interface FastEthernet 0/1

15. When a device is moved from one network to the other...?
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
Collisions can decrease network performance.
A. provide routers w/ up-to-date routing tables b. consume bandwidth to exchange route info
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

16. What are 2 forms of application layer software?
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
A. performance degradation b. security issues c. host identification
0 to 1023
A. application b. services

17. After a browser makes a request to a web server in the standard port - what will be the port number in the TCP header?
Resolve IPv4 addresses to MAC addresses.
Signal loss can be experienced.
Network portion
80 (HTTP)

18. What do you need to use for an initial configuration on a Cisco router?
Console interface
Wireless
The magnetic field around the adjacent pairs of wire.
RJ-45

19. 3 statements of media acess control
A. minimizing of collisions b. division into broadcast domains
A. Physical b. Data Link
Binary ANDing
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

20. 3 characteristics of valid Ethernet Layer 2 addresses
Originate data flow.
A. they initiate data exchanges b. they may upload data to servers
SSH
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

21. What are 2 commands used to view a host routing table?
Fiber
A. netstat -r b. route PRINT
A. physical layer b. DLL layer
A. consumes network bandwidth b. increases overhead on network c. interrupts other host functions

22. 3 statements about routes and their use
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
It has expanded adressing capabilities.
Source and Destination Ports

23. 3 protocols that operate in the application layer
Network portion
A. minimizing of collisions b. division into broadcast domains
A. performance degradation b. security issues c. host identification
A. DNS b. SMTP c. POP

24. At which layer of the TCP/IP model does ethernet operate?
SSH
A. computers are allowed to transmit data only when they posses a token b. electronic tokens are passes sequentially to each other
Network Layer
Network Access

25. With TCP/IP encapsulation - which range of port numbers identifies all well known applications?
It uses lasers as the light source.
Next-Hop Address
0 to 1023
The magnetic field around the adjacent pairs of wire.

26. Which IP packet field will prevent endless loops?
Switch
Time-to-live (TTL)
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. the router will discard the packet b. the router will send a time exceeded message to the source host

27. 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
Router(config)# interface FastEthernet 0/1
A. router b. firewall
TCP initializes the sequence numbers for the sessions.

28. If you have a PC - 3 routers and a Laptop... How many unique CRC calculation will take place as traffic routes from the PC to the Laptop?
8
Console
A. identifies the communicating applications b. identifies multiple conversations between the hosts
A. servers b. routers c. network printers

29. What is an automated service that matches resource names w/ required IP addresses?
Network Layer Packet
They must wait until the first hosts finish transfering the media.
DNS
As the commands are entered.

30. 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
A. larger address space b. data types and classes of service c. authentication and encryption
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
A. purpose b. geographic location c. ownership

31. Which type of cable is most often associated w/ fiber-optic cable?
Any device whose backoff timer expires first.
When connecting a host to a switch.
TCP initializes the sequence numbers for the sessions.
A backbone cable.

32. What 2 type of cables would most commonly be used for new runs?
A. Cat5 UTP b. Cat6 UTP
It uses support from the lower layers to distinguish between connections to the service.
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. servers b. routers c. network printers

33. 2 characteristics of peer-2-peer
A. decentralized resources b. resource sharing w/o a dedicated server
A backbone cable.
TCP initializes the sequence numbers for the sessions.
A. determine pathways for data b. retrieve and retransmit data signals c. manage data flows

34. When destination network is not in the routing table - What are 2 actions the router might take?
255.255.255.224
A. low overhead b. connectionless
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.

35. Intermediary devices used to implement security between networks
A. media sharing b. logical topology
A. router b. firewall
UDP
A backbone cable.

36. What are 3 properties of contention-based media access for a shared media?
It has expanded adressing capabilities.
A. enable mode b. priviledge executive mode
A. Cat5 UTP b. Cat6 UTP
A. non-deterministic b. less overhead c. collisions exist

37. What type of network cable is used between a terminal and a console port?
A. performance degradation b. security issues c. host identification
A. flow control b. session establishment c. numbering and sequencing
Rollover cable
Network Layer Packet

38. 3 terms that define the forms of help available within the Cisco IOS
The host can communicate w/ other hosts in the local network but is unable to communicate w/ hosts on the other networks.
Destination is not contacted before a packet is sent.
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. hot keys b. context-sensitive c. command syntax check

39. How many bits make up an IPv4 address?
32 bits
TCP initializes the sequence numbers for the sessions.
IP Protocol
A. application b. services

40. An admin needs a media that can run up to 100m in legth. Which type of media would be best?
255.255.255.224
UTP
Physical
A. Physical b. Data Link

41. What is a characteristic of a single-mode fiber-optic cable?
It uses lasers as the light source.
The packets will be delivered and reassembled at destination.
A. it has centralized administration b. security is easier to enforce
A. MTA b. SMTP

42. 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
Console
The MAC protocol can be very simple.
A. is identical for all hosts in a broadcast domain b. varies in length c. is used to forward packet

43. What event occurs during the 3-way handshake?
Network address
TCP initializes the sequence numbers for the sessions.
172.16.192.160
No collisions will occur on this link.

44. 3 features of IPv6
A. larger address space b. data types and classes of service c. authentication and encryption
A. replace a switch w/ a router b. subnet the new networks
Ctrl + Shift + 6
Transport

45. 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.
Twisting of the cables
Window Size
A. 48 binary bits in length b. physical addresses c. represented in a hexadecimal format

46. What is the primary rope of the physical layer in transmitting data?
Host2 sends a segment to Host1 with: ACK flag = 1 SYN flag = 1
It uses lasers as the light source.
Create signals that represent the bits in each frame for the media.
The physical address is added.

47. Why is flow control used for TCP data transfer?
UDP
To prevent the receiver from being overwhelmed by incoming data.
Signal loss can be experienced.
A. DB 60 b. Winchester 15-pin c. smart serial

48. What is PDU?
RJ-45
Is a layer of specific encapsulation.
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
IP is not properly installed

49. What correctly describes a MAC address?
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
FTP
A. copied into RAM during system startup b. contains a 3 byte OUI c. is 6 bytes long
To facilitate the entry and exit of data on media.

50. In an IPv4 environment - what information is used by the router to forward data packets from one interface of a router to another?
Source and Destination IP address
A. router discards the packet b. router forwards the packet out the interface indicated in the route entry
Destination Network Address
They must wait until the first hosts finish transfering the media.