Network+ (N10-003) Test Questions

Test 2
1. Your company network includes Windows 98, Windows 2000 Professional, and Macintosh client computers. All of the client computers currently use TCP/IP as their only network protocol. You create several shared folders on a Windows 2000 Server computer. You plan to store the company's financial data in these shared folders. During testing, you discover that the Macintosh client computers cannot access the shared folders. You want the shared folders to be accessible from all of the client computers on the network. What should you do first?
Install the SAP protocol on the Windows 2000 Server computer.  
Install the Apple Talk network protocol on the Macintosh computers and on the Windows 2000 Server computer.  
Install Apple Talk network integration on the Windows 2000 Server computer.  
Install RIP on the Windows 2000 Server computer 
Answer/Explanation
  • Install the Apple Talk network protocol on the Macintosh computers and on the Windows 2000 Server computer. Macintosh clients require Apple Talk, or other third party solutions, to be integrated in a Windows net-work. AppleTalk must be configured both on the client side and on a Windows 2000 Server.
    Keep in mind that Apple X (10.0) and above use Kerberos as the authentication mechanism.
    2. You have been presented with a position with the XTC Corporation that utilizes NetWare 5 as its network operating system.
    Due to the size of the operation all hex characters are used for the network portion of the addressing scheme. How many bits are there in a NetWare address?
    80  
    32  
    48  
    72  
    Answer/Explanation
  • 80

    Novell NetWare uses a total of 80 bits in it’s addressing scheme. 8 characters for the network ID which are to the left of the 12 characters that identify the MAC address, which is the node ID.
    This would be a total of 20 Hex characters. Since each hex character is valued at 4 bits then the answer would be 80 bits or 10 bytes.
    72 is a bogus number for this question.
    32 bits would be the number of bits just in the network ID portion of this address.
    48 bits would be the number of bits in the MAC portion of this address; 24 bits for the Mfg., ID and 24 bits for the serial number.

    3. Wireless network frequencies have been assigned by the FCC (Federal Communication Commission)in the Industrial/Scientific/Medical band. The IEEE has designated 802.11 for wireless standards. Currently there are wireless 802.11b, 802.11a, and 802.11g wireless designations. Which of the following would be correct in regards to the 802.11b standard?
    802.11b uses FHSS (Frequency hopping spread spectrum) in the frequency range of 2.4 GHz , with an average distance capability of approximately 100 meters, @ 11Mbps. 
    802.11b uses OFDM (Orthogonal frequency division multiplexing) in the frequency range of 5.0 GHz, with an average distance capability of approximately of 1000 meters, at 11Mbps. 
    802.11b uses DSSS (Direct sequence spread spectrum) in the frequency range of 2.4 GHz, with an av-erage distance capability of approximately 300 feet in an outdoor area, with speeds up to 54Mbps. 
    802.11b uses OFDM (Orthogonal frequency division multiplexing) in the frequency range of 5.0 GHz, with an average inside distance of 50 meters with speeds up to 54 Mbps. 
    Answer/Explanation
  • 802.11b uses FHSS (Frequency hopping spread spectrum) in the frequency range of 2.4 GHz, with an average distance capability of approximately 100 meters, @ 11Mbps.

    Keep in mind that wireless technology is regulated by the FCC (Federal Communications Commission) and is required to be spread spectrum technology. This technology was developed in the 1940s so that a transmission signal could be spread over a broad range of radio frequencies.
    The term spread spectrum actually is defined as a modulation technique that sacrifices bandwidth to gain signal-to-noise performance.

    4. You are at a site that requires that an image be transferred from a server to a router. You attach your laptop to the router, and login with the help desk supplied password. Which of the following Statements would be true in regards the use of an Application layer protocol?
    TCP is used when using UDP to ensure that reliability is provided.  
    When using UDP, TCP is may be used to provide a connectionless connection for reliability.  
    FTP uses TCP for reliability when transferring files.  
    UDP is most commonly used when using TFTP for the transfer of files.  
    Answer/Explanation
  • TFTP is a connectionless application protocol within the TCP/IP suite that uses UDP as its transport method. It is often used to copy an image from a server to a router or a switch, or vice versa.

    FTP (File transfer protocol) is connection oriented by using TCP as its means of transport.
    SMTP (Simple mail transfer protocol) is a network management program that resides on hardware devices within the network.
    TCP (Transmission control protocol) is the reliable transport protocol used at the transport layer.

    5. Which of the following are the main methods of media access within the Data link layer? Choose all that apply.
    Contention  
    Wi-Fi  
    Polling  
    Radio waves  
    Only 1 answer is correct.  
    Answer/Explanation
  • Contention
  • Polling

    Contention, Polling, and Token passing are the main methods of media access within the data link layer.
    Contention is all machines contending for a chance to transmit, CSMA/CD, which is used by Ethernet.
    Token passing is used by FDDI and Token Ring networks.
    Many retail stores use polling. The main office polls the number 1 register (this is the server in many re-tail outlets), to determine total sales and sales by item for inventory purposes.
    Radio waves do not fall in the category of media access. For 802.11 media access would be CSMA/CA.

    6. If HTTP uses port 80 and does not provide a secure connection for E-commerce then we would imple-ment HTTPS, which uses SSL (secure socket layer). HTTPS provides a secure and encrypted connection for E-commerce. Which port number is used by HTTPS?
    HTTPS uses port 143.  
    HTTPS uses port 21.  
    HTTPS uses port 443.  
    HTTPS uses port 53.  
    Answer/Explanation
  • HTTPS uses port 443.

    HTTPS is used for secure internet connections for e-commerce. SSL is used and sometimes combined with TLS (Transport layer security) for a higher level of security.
    FTP (file transfer protocol) uses port 21, and is used to transfer large files or multiple files to and from different computers (typically UNIX). FTP also uses TCP for guaranteed delivery of data packets.
    Port 143 is used by IMAP4 (downloading email with an encrypted username and password with Kerbe-ros).
    Port 53 is used by DNS (Domain naming service) to resolve IP addresses to a host names.
    PPP may be used over asynchronous (dial up) or synchronous (ISDN) media. Replaces SLIP.
    HTTPS uses port 443.
    HTTP uses port 80.

    7. As we all know there is a multitude of protocols that reside at a variety of different layers of the OSI model. Some protocols provide routing functionality, and some provide services. Which of the following statements about connectionless, unreliable transport service at layer 4 is true?
    TFTP uses UDP as a connectionless protocol at layer 4 of the OSI model for unreliable transfer of files.  
    TCP uses IP which is unreliable for data transfer when using TFTP.  
    For unreliable data transfer when using UDP at layer 4, SPX is used.  
    IP is a connectionless protocol and is used with TFTP to move files to and from UNIX servers.  
    Answer/Explanation
  • TFTP uses UDP as a connectionless protocol at layer 4 of the OSI model for unreliable transfer of files.

    In essence, UDP is a scaled down version of TCP, and TFTP is a scaled down version of FTP.
    IP is a connectionless protocol in the TCP/IP suite that resides at layer 3 (Network layer) of the OSI model. IP relies on the upper layer services of TCP for reliability.
    TCP is a connection oriented protocol that resides at layer 4 (Transport layer).
    SPX is NetWare's reliable (connection oriented) Transport layer protocol.

    8. You purchase a USB board, ISDN terminal adapter for your Windows 2000 Professional portable com-puter. You plug the device in to the USB port. Plug and Play fails to detect the new device. You test the device on a Windows 2000 Professional desktop computer. You find that plug and play correctly detects the device. You want to resolve the problem so that you can use ISDN terminal adapter on your portable computer. What should you do?
    Use the Device Manager to enable the USB manager root hub.  
    Contact the hardware manufacturer to obtain the upgrade for the Plug and Play BIOS.  
    Use the Device Manager to enable the USB host controller in the current hardware profile.  
    Turn off the computer plug in the ISDN terminal host adapter and restart the computer.  
    Answer/Explanation
  • Contact the hardware manufacturer to obtain the upgrade for the Plug and Play BIOS.

    Since the device worked on a second Windows 2000 PC, then the best answer here would be that the BIOS was not capable of USB. This is the only logical answer in this scenario. Truth be told, you would be hard pressed to buy a computer that had a USB port and did not have a USB BIOS. It would be possi-ble that the USB used an adapter card here.
    You do not enable the USB hub or the USB Host controller in Device manager.
    Since USB is hot swappable there is not a need to turn the computer off to install the device.

    9. If DNS were not installed on your network, which of the following methods would be the simplest method to resolve fully qualified domain names (FQDN) to IP addresses?
    WINS file  
    HOSTS file  
    DHCP records  
    LMHOSTS file  
    Answer/Explanation
  • HOSTS file

    The HOSTS file is used to resolve FQDNs to IP addresses when a DNS server is not on the network.
    DNS (Domain naming service) is used to resolve FQDNs to IP addresses. When thinking of DNS thing of the internet, (Domain). WINS (Windows naming service) resolves computer (NetBIOS) names to IP addresses, and only in a Windows only network.
    DHCP (Dynamic Host Configuration Protocol) is used to lease out IP addresses to clients on the network.
    A HOSTS file may be used to resolve FQDNs to IP addresses but it would not be the simplest method. A HOSTS file is a text file and is required at every client. This could be a lot of work.
    Run a search on a Microsoft® machine for LMHosts.* and review the HOSTS and Lmhosts files.

    10. Which of the following may be configured to deliver voice, data and video, and have transmission rates in multiples of 51.84 Mbps?
    Frame Relay uses the 53-byte cell and is configured in multiples of 51.84 Mbps.  
    Dual ring FDDI transfers data in multiples of 51.84 Mbps. 
    Sonet transfers data in multiples of 51.84 Mbps. 
    ATM transfers data in multiples of 51.84 Mbps. 
    Answer/Explanation
  • Sonet transfers data in multiples of 51.84 Mbps.

    Sonet (Synchronous Optical Network) transfers data in multiples of 51.84 Mbps. Sonet provides a layer 1 interface, just as Ethernet does.
    As such, Sonet acts as a carrier of multiple higher layer application protocols. As an example, IP may be configured to flow over Sonet.
    Frame relay is a packet switched technology that operates at the physical and data link layers.
    FDDI is a dual fiber ring technology that uses token passing as its access method.
    ATM is a high-speed communications protocol, and does not depend on any specific LAN technology.


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