Network+ N10-006 Practice Exam D - David L. Prowse

1 network + N10-006 Practice Exam D Hey everyone! Here s a free 100 question network + Practice exam for you. Enjoy! Each question has the answer and explanation on the following page. Begin on the next page good luck! Yours truly, David L. Prowse Check out these links: My Free network + Study Page: network + N10-006 Cert Guide: network + N10-006 Exam Cram: network + Complete Video Course: 1. On which layer of the TCP/IP model is ARP described? A. Link layer B. Internet layer C. Transport layer D. Application layer 1. Answer. A Explanation. The Address Resolution Protocol (ARP) was developed within the TCP/IP model framework and resides on the link layer (also known as the network interface layer), which is similar to OSI's data link layer. ARP resolves or translates between IP addresses and MAC addresses.

2 Note: ARP wasn't developed in the OSI framework but is often considered to be a network layer protocol in OSI, or a protocol that resides between the network and data link layers, because it deals with IP addresses ( network layer) and MAC addresses (data link layer) respectively. Note: The TCP/IP model is also known as the Internet protocol suite computer networking model. Incorrect Answers. In the TCP/IP model the Internet layer is where protocols such as IP, ICMP, and IGMP reside. This layer is similar to the OSI network layer. The transport layer is where protocols such as TCP and UDP reside; it is very similar to the OSI layer of the same name. The application layer is where protocols such as HTTP, FTP, and POP reside; again, similar to the OSI layer of the same name, although the TCP/IP model version combines the OSI's presentation and session layers into a single application layer.

3 Be sure to know the layers within the TCP/IP model (also known as the Internet protocol suite): from top to bottom they are the application, transport, Internet, and link layers. (The physical layer does not necessarily have to be included as it is considered outside of the TCP/IP group of protocols, but you might see it listed as a fifth layer.) Links: network + N10-006 Cert Guide: network + N10-006 Exam Cram: network + Complete Video Course: Memorize it! 2. Which of the following frequencies is used by and A. 900 MHz B. 1800 MHz C. GHz D. 5 GHz 2. Answer. C Explanation. The IEEE wireless specifications and state that they must run in the GHz range. Specifically, between and GHz (though many wireless access points will only go as high as channel 11 which is GHz). Incorrect Answers.

4 900 MHz is used by amateur radio, cordless phones, and was used by obsolete wireless networking companies such as Aironet (now Cisco). 1800 MHz is a common cellular band used by the Global System for Mobile Communications (GSM), though GSM also uses lower frequencies as well. 5 GHz is used by wireless technologies such as and Links: network + N10-006 Cert Guide: network + N10-006 Exam Cram: network + Complete Video Course: 3. You are configuring a DHCP server and want to exclude IP addresses from being distributed to other computers. What method should you use? A. Leases B. DORA C. Relay agent D. Reservations 3. Answer. D Explanation. To exclude IP addresses within a DHCP scope, use reservations. (These are often used by servers and other network devices, usually in a static fashion.) This way, the DHCP server will hand out IP addresses from the DHCP scope normally, but will skip over any individual reservations or ranges of reserved IPs.

5 Incorrect Answers. A lease is simply the amount of time that a DHCP IP address is assigned to a computer. DORA is an acronym that stands for discovery, offering, request, and acknowledgement: these are the four phases of DHCP operations, further described as server discovery, IP lease offer, IP request, and IP lease acknowledgement. A relay agent is a secondary DHCP device that can forward DHCP messages across routed networks. Links: network + N10-006 Cert Guide: network + N10-006 Exam Cram: network + Complete Video Course: 4. Which of the following is a type of network cable that includes a fire-retardant jacket? A. Coaxial B. Fiber C. Plenum D. UTP 4. Answer. C Explanation. Plenum-rated cable is unshielded twisted pair (UTP) cable that has a fire retardant jacket which covers the PVC jacket which surrounds the individual wires.

6 Old-school plenum-rated cable used Teflon, but newer versions (now also known as low-smoke cable) use a different type of PVC that doesn't burn, or release toxic vapors as easily. Incorrect Answers. The rest of the answers are types of cables, but none are fire-retardant by default some type of plenum rated coating or modified manufacturing process of the jacket would have to be included. By default, they all have standard PVC jackets. Coaxial cable is used for cable TV and Internet, and in older local area networks. Fiber optic cable is used in scenarios where high data throughput is required. As mentioned, UTP stands for unshielded twisted pair, which is the most common type of twisted pair cabling used in data communications networks. Links: network + N10-006 Cert Guide: network + N10-006 Exam Cram: network + Complete Video Course: 5.

7 You want to synchronize time from a Windows 7 computer to a Windows Server 2008 computer. What protocol should be used? A. POP3 B. NTP C. FTP D. SNMP 5. Answer. B Explanation. To synchronize time between the computers, the network Time Protocol (NTP) will ultimately be utilized. To initiate that protocol on a Windows computer, you would use the net time command. For example: net time \\server2008 /set This would synchronize the local computer's time to the computer named "server2008". Try using the net time command on one of your own Windows computers. Analyze the different options with the net time /? command, and by accessing the following TechNet link: Then try as many of the options as you can given your network environment. Incorrect Answers. POP3 is the Post Office Protocol (version 3) which is used to receive e-mail.

8 FTP stands for File Transfer Protocol which is used to transmit and receive data to and from remote computers. SNMP stands for Simple network Management Protocol which is used to remotely monitor network devices and other systems. Links: network + N10-006 Cert Guide: network + N10-006 Exam Cram: network + Complete Video Course: Try it! 6. Which of the following ports does syslog use? A. 53 B. 143 C. 389 D. 514 6. Answer. D Explanation. The syslog protocol uses port 514 by default. Syslog is a standard for computer message logging; it allows an admin to pull the logs from a router (or other compliant network device) and view them from a local workstation (given the router is configured properly and syslog monitoring software is installed on the computer). Incorrect Answers. Port 53 is used by the Domain Name System (DNS).

9 Port 143 is used by the Internet Message Access Protocol (IMAP). Port 389 is used by the Lightweight Directory Access Protocol (LDAP). Links: network + N10-006 Cert Guide: network + N10-006 Exam Cram: network + Complete Video Course: 7. If you were to type the following command, what would it display? netstat -n A. IP address B. Ethernet statistics C. Address and port numbers in numerical form D. Protocol statistics 7. Answer. C Explanation. The netstat -n command in the Windows Command Prompt is used to view connections to remote computers numerically meaning in IP address and port number format. For example, Local Address Foreign Address :49159 :80 This shows the local computer IP ( , which is private) and the outbound port that is being used (49159, which is dynamically assigned), and the remote computer IP ( , which is public) and the inbound port of that server (80, which is static and corresponds to HTTP).

10 If you wanted to show these connections in hostname and protocol name format, you could use the netstat -a command. Incorrect Answers. To display an IP address you could use the ipconfig command. Ethernet statistics can be displayed by using netstat -e. Protocol statistics can be displayed by using the netstat -s command. To learn more about netstat and its parameters type netstat /? in the Windows Command Prompt. Try using the netstat command on one of your own Windows computers. Examine the different parameters, and be sure to know how to use the -a, -n, and -an parameters, and know the differences between them. Also perform commands with the -e and -s parameters. Links: network + N10-006 Cert Guide: network + N10-006 Exam Cram: network + Complete Video Course: Try it! 8. You are setting up a SOHO computer network for a small business owner.