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Author:
apom
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30352
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Questions
Updated:
2010-09-01 16:20:05
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ICND1
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CCENT Practise Questions
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  1. During the boot process, where will a router first look for a valid IOS image?
    • A. ROM
    • B. RAM
    • C. NVRAM
    • D. Flash
    • E. VLAN.DAT file

    A Cisco router will first look for its IOS image in Flash.
  2. Of Flash, NVRAM, RAM, and ROM, which one(s) lose their content on a reload
    Only the contents of RAM are lost on a reload.
  3. Where can you find the POSTs in a Cisco router?
    • A. ROM
    • B. Flash
    • C. NVRAM
    • D. RAM

    The Power-On Self-Test programs are in ROM.
  4. Referring back to Question 5 - what is a POST, anyway, and why do we care?
    We care because the POSTs run important tests to determine if there's a critical error in the router before the boot process goes into full swing - and if there is, you get a nasty little message on the screen that the POST has failed and the router shuts down.
  5. Where does a Cisco router store its startup configuration file?
    • A. RAM
    • B. ROM
    • C. NVRAM
    • D. Flash

    The startup config file is kept in Non-Volatile RAM. The "non-volatile" refers to the non-loss of its contents on a reload.
  6. Where is a Cisco router's running configuration kept?
    • A. ROM
    • B. Flash
    • C. RAM
    • D. NVRAM

    The running config is found in RAM.
  7. You just ran show interface serial 0 and note that the line protocol is down, but the interface is up. Which of the following could cause that?
    • A. DCE not giving clockrate to DTE
    • B. DTE not giving clockrate to DCE
    • C. Cable is loose
    • D. Missing LMI (if running Frame Relay)
    • E. One end of the point-to-point connection is administratively shut down

    If the DCE is not supplying clockrate and/or the LMI is not being received correctly in a Frame Relay configuration, the line protocol will go down.
  8. Match the data type to the layer of the OSI model:
    OSI model: Data Type (encapsulation)

    • Application Data
    • Transport Segment
    • Network Packet
    • Data Link Frame
    • Physical Bit
  9. Which layer of the Hierachial network model is designed for transfering data as fast as possible?
    Hierarchical Layer
    Core - Fast Switches media (Fiber, Gigabit).
    Distribution - Switches and Routers.
    Access - PC's, PDA, Hub, Switches, Printers, or other
    network acess devices.
    Core / Network
  10. Which layer of the OSI does the Telnet program map to?
    Application Layer
  11. Which layer of the OSI model do WAN protocols, such as, ATM, PPP, SLIP map to?
    Data Link
  12. Which layer of the DoD model do ARP and ICMP map to?

    Which layer of the OSI model do ARP and ICMP map to?
    Internet

    Network
  13. Which layer of the OSI put binary data (Bit) onto the wire or media?
    Physical
  14. Which layer of the OSI model is responsible for encapsulating the source and destination IP address on network data?
    Application Layer
  15. Original DoD Model:
    • Application
    • Transport
    • Internet
    • Network Acess
  16. TCP/IP Network Model:
    • Application
    • Trasnport
    • Network / Internet
    • Data Link
    • Physical
  17. OSI Model:
    • 7-Application
    • 6-Presentation
    • 5-Session
    • 4-Transport
    • 3-Network
    • 2-Data Link
    • 1-Physical
  18. Application Layer Protocols and Port #:

    1-Take data from application
    2-Ensure that all necessary resource are available
    3-Initialize services and the network for data transmission
    DNS (53), FTP (20,21), HTTP (80), POP3 (110), Telnet , SNMP (161), SMTP (25), NNTP (119), NFS, SMP, TFTP (69)

    Hardware: Gateway and Proxy Server
  19. Presentation Layer Protocols:

    1-Reformat or translate between different character sets
    2-Encypting, decrypting and compressing, decompressing
    3-Provides support for error recovery
    ASCII, DIC, EBC, GIF, JPEG, PICT and TIFF

    Hardware: Gateway
  20. Session Layer Protocols:

    1-Assume a reliable virtual connection
    2-Establishing, maintaining, synchronization and terminating connections
    3-Port numbers are assigned and maintained
    NetBIOS, SAP, RPC, SQL and X-Windows

    Hardware: Gateway
  21. Transport Layer Protocols:

    1-Packages data into segment
    2-Provide flow control
    3-Performs end-to-end transport of data
    ATP (Apple Talk Protocol), NBP (Name Binding Protocol), PPTP (Point to Point Tunneling Protocol), SPX (Sequenced Packet Exchange), TCP and UDP

    Hardware: Gateway
  22. Network Layer Protocols:

    1-Break segmented data into packets and sequences them
    2-Assign logical addresses to packets
    3-Routes packets
    ARP, ICMP, IP, IPSec, IPX, NetBIOS, NetBEUI, OSPF and RIP

    Hardware: Gateway, Router, Brouter and Layer 3 Switch (Smart Switch)
  23. Data Link: Layer Protocol

    1-Break data packets into frames
    2-Manage hardware addresses (MAC)
    3-Defines the topology of the network based on the IEEE 802.x standards
    4-Provide error and flow control
    802.1Q, 802.3 (Ethernet), 802.11a/b/g/n (Wireless), ATM, Frame Relay, L2TP, PPP, PPTP, SLIP and Token Ring

    Hardware: Gateway, Switch, Bridge, WAP, NIC
  24. Physical Layer Protocols:
    N/A

    Hardware: Gateway, Repeater, Hub, NIC, Cables

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