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Free CCNA Self-assessment

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free CCNA self-assessment

By IMS Asia Sdn. Bhd. (http://www. Imsasia. Com)640-802 CCNA Exam Topics (Cisco Certified Network Associate - Routing & Switching)Exam DescriptionThe 640-802 CCNA is the composite exam associated with the Cisco Certified Network Associate certification. Candidates can prepare for this exam by taking the Interconnecting Cisco Networking Devices Part 1 (ICND1) v1. 0 and the Interconnecting Cisco Networking Devices Part 2 (ICND2) v1. 0 courses. This exam tests a candidate's knowledge and skills required to install, operate, and troubleshoot a small to medium size enterprise branch network. The topics include connecting to a WAN; implementing network security; network types; network media; routing and switching fundamentals; the TCP/IP and OSI models; IP addressing; WAN technologies; operating

Questions and Answers
  • 1. 
    Functions and characteristics of a router may include: (Select three answers)
    • A. 

      Packet switching

    • B. 

      Collision prevention on a LAN segment.

    • C. 

      Packet filtering

    • D. 

      Broadcast forwarding

    • E. 

      Internetwork communication

  • 2. 
    When a large file is transferred from a host to another host, using FTP, protocols in TCP/IP suite will ensure the file disassembled into smaller pieces before sending out. What provides for the reassembly of these pieces into the correct order?
    • A. 

      The sequence number in the TCP header

    • B. 

      The Start Frame Delimiter in the 802.3 Preamble

    • C. 

      The TTL in the IP header

    • D. 

      The acknowledgement number in the segment header

    • E. 

      The frame check sequence in the Ethernet frame trailer

  • 3. 
    In a Host-to-Host communication process, based on the TCP/IP protocol suite, what would TCP protocol at Transport Layer do to improve communications when receiving host acknowledge less than full data sent by the sending host?
    • A. 

      Change from one transport layer protocol to another transport layer protocol.

    • B. 

      Change to a better link for better connection.

    • C. 

      Decrease the window size.

    • D. 

      Receiver will flush the buffer to accommodate more data received.

    • E. 

      Decrease the sequence number.

  • 4. 
    What device would be needed in order to establish a connection to a WAN service provider cloud on the right from the customer router on the left? (Select two answers)
    • A. 

      Multiplexer

    • B. 

      WAN switch

    • C. 

      ATM switch

    • D. 

      CSU/DSU

    • E. 

      PVC

    • F. 

      Modem

  • 5. 
    Referring to the devices shown above, which statements are true in this scenario?(Select two answers)
    • A. 

      All the devices in both networks will receive a broadcast to 255.255.255.255 sent by host CompA.

    • B. 

      Only the devices in network 192.168.1.0 will receive a broadcast to 255.255.255.255 sent by host CompA.

    • C. 

      All the devices on both networks are members of the same collision domain.

    • D. 

      The hosts on the 192.168.1.0 network form one collision domain, and the hosts on the 192.168.2.0 network from a second collision domain.

    • E. 

      Each host is in a separate collision domain

  • 6. 
    Which of these “trunking” protocol does a Cisco 2960 switch support(s)? (Select all that applies).
    • A. 

      VTP

    • B. 

      802.1Q

    • C. 

      ISL

    • D. 

      CDP

    • E. 

      PAP

  • 7. 
    The connection between the two hosts, Host1 and Host2, failed. What is the probable cause of the connection failure?
    • A. 

      Subnet mask error; 255.255.255.192 should be used instead.

    • B. 

      Subnet mask error; 255.255.255.224 should be used instead.

    • C. 

      Wrong cable type; a roll-over cable should be used instead.

    • D. 

      Missing default gateway.

    • E. 

      Should use private IP address instead.

  • 8. 
    Using Ethernet and in a half-duplex environment, what would happen to two hosts, if discovered that there is a “jam” signal, soon after both send data to each other simultaneously?
    • A. 

      Collision is cleared, hence the “jam” signal.

    • B. 

      Request for retransmission is sent from the receiver.

    • C. 

      Another electrical signal would be generated to inform that it is clear.

    • D. 

      Both hosts would ignore the “jam” signal.

    • E. 

      A time delay would be initiated by both hosts and will resume sending after.

  • 9. 
    A unicast frame enters into an Ethernet switch. The switch already has a record of the destination MAC address, the switch would then
    • A. 

      Make copy of the frame and send the frame back through the receiving port.

    • B. 

      Drop the frame.

    • C. 

      Forwards the frame to all active ports except the receiving port.

    • D. 

      Remove the MAC address recorded.

    • E. 

      Forwards the frame to the specific port.

  • 10. 
    What situation could a switch have two MAC addresses recorded on one single Fast Ethernet port in the MAC address table? (Select all that applies)
    • A. 

      Two end hosts send the same data to a third host in the same physical switch.

    • B. 

      Two end hosts connected physically on two ports but on the same VLAN in the same switch.

    • C. 

      The port connecting to a host just replaced the NIC.

    • D. 

      Two hosts connect physically to a hub that connects to the Fast Ethernet port of the switch.

    • E. 

      It is not possible for this to occur.

  • 11. 
    What are the advantages of using VTP in any Ethernet switched environment?
    • A. 

      VTP allows creation of redundant physical links while preventing loops.

    • B. 

      VTP allows easier management through automatic updates on VLAN information.

    • C. 

      VTP allows passing of multiple VLAN traffic through one single physical interface.

    • D. 

      VTP allows the possibility of inter-VLAN routing.

    • E. 

      None of the above.

  • 12. 
    A new Cisco switch has just been connected to the current network. As a network administrator, you need to propagate current VLAN information to synchronize with the new Cisco switch. Which of the conditions below have to be met in order for this to occur? (Select all that applies).
    • A. 

      The switch that will share the VLAN information must be the root bridge.

    • B. 

      The new switch must be in the same VTP domain.

    • C. 

      The new switch must have the same STP version.

    • D. 

      The new switch must have the same VTP version.

    • E. 

      The new switch must be connected over VLAN trunks.

  • 13. 
    How can implementation of VLAN help an organization? (Select three)
    • A. 

      VLANs allows packet filtering and thus enhancing security.

    • B. 

      VLANs establish segmented broadcast domains in switched networks.

    • C. 

      VLANs allow hosts to communicate using IP addresses in a large network.

    • D. 

      VLAN allows grouping based on network service requirement.

    • E. 

      VLANs is very scalable in any organization.

  • 14. 
    A network administrator is required to connect one file server to a Cisco Catalyst 2960. The administrator is also required to ensure there could only be that file server connecting to the switch on that selected port. How could this be achieved? (Select two)
    • A. 

      Configure switch to do packet filtering to permit only packets from the file server.

    • B. 

      Configure a static file server’s MAC address entry on the selected port.

    • C. 

      Use a unique connector to allow only that host to connect.

    • D. 

      Configure on selected port to reject all frames except frames matching MAC address of file server.

    • E. 

      Bind IP address of the server to the port to prevent spoofing of packets.

  • 15. 
    You need to ensure that your network is able to connect via Internet. Which of these IP address is suitable for such a requirement? (Select two answers)
    • A. 

      212.193.48.254

    • B. 

      10.234.12.95

    • C. 

      192.168.23.252

    • D. 

      172.64.12.29

    • E. 

      172.16.223.125

  • 16. 
    Which of the following hosts can communicate successfully without a layer 3 device?Host            IP Address              Subnet MaskP                10.128.40.126          255.255.224.0Q                10.128.65.28            255.255.224.0R                10.128.31.21            255.255.224.0S                10.128.72.100          255.255.224.0
    • A. 

      Host P and Host Q

    • B. 

      Host P and Host R

    • C. 

      Host Q and Host R

    • D. 

      Host Q and Host S

    • E. 

      Host P and Host S

  • 17. 
    A new security policy has passed. What is the purpose of deploying switches that is configured with port security in a Cisco 2960?
    • A. 

      Allowing only recognized hosts using recorded MAC to access the LAN.

    • B. 

      Reduce broadcast traffic from being sent out from the configured port.

    • C. 

      Preventing unauthorized telnet and/or SSH sessions coming in/going out the port.

    • D. 

      Allowing only recognized packets using recorded IP addresses to access the LAN.

    • E. 

      To ensure the host is connecting to the correct VLAN based on the recorded MAC.

  • 18. 
    If IP address of 172.30.30.111/22 is to be assigned to a host, what are the characteristic of that address? (Select two)
    • A. 

      The broadcast address of the subnet is 172.30.31.255 255.255.252.0.

    • B. 

      This network is not subnetted.

    • C. 

      The last valid host address in the subnet is 172.30.30.254 255.255.252.0

    • D. 

      The network address is 172.30.30.0 255.255.252.0.

    • E. 

      The last host address in the subnet is 172.30.31.254 255.255.252.0.

  • 19. 
    Given the output from the show command above, if a network administrator does a ping to 172.16.1.1 from host 172.30.3.100, what will RouterA do when it receives the packet?
    • A. 

      RouterA will route via Serial0/0/0 interface.

    • B. 

      RouterA will flood to all other interfaces except the receiving interface.

    • C. 

      RouterA will drop the packet because it is clearly not in the routing table.

    • D. 

      RouterA will route via FastEthernet0/0 interface.

    • E. 

      RotuerA will route via Serial0/0/1 interface.

  • 20. 
    In any Cisco router, the system will, upon booting, locate the and load the IOS into memory. By default, what is the sequence to locate the IOS?
    • A. 

      ROM, TFTP server, Flash

    • B. 

      Flash, TFTP server, RAM

    • C. 

      Flash, ROM, TFTP server

    • D. 

      Flash, TFTP server, ROM

    • E. 

      Flash, NVRAM, TFTP server