IT Essentials Chapter 7 Quiz Answers Online

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A subnet mask of 255.255.0.0 represents sixteen bits in the host portion of the address identified by zeros. Sixteen bits allows for 2^16 possible host addresses that can used on a network.

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Host is a general term for any device on a network that can send and receive data.

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Hubs are sometimes called repeaters because they regenerate the signal. All devices connected to the hub share the same bandwidth (unlike a switch, which gives each device dedicated bandwidth).

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The IEEE standards describe current Ethernet features. The IEEE standard for Ethernet is 802.3.

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The protocols are associated with the following TCP/IP layers:

HTTP > application layer
TCP > transport layer
IP and ICMP > internet layer

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A switch will maintain a switching table that contains a list of available MAC addresses on the network, The switching table will record MAC addresses by inspecting the source MAC address of every incoming frame.

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There are two rules for IPv6 address compression. Rule 1: leading zeros in any hextet can be removed. Rule 2: contiguous hextets of all zeros can be compressed to a double colon. Rule two can only be applied once.

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A personal area network (PAN) connects devices, such as mice, keyboards, printers, smartphones, and tablets. These devices are often connected with Bluetooth technology. Bluetooth allows devices to communicate over short distances.

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The proper CIDR notation for a subnet mask of 255.0.0.0 is /8. This is because the /8 indicates that the first eight bits of the subnet mask are set to binary 1.

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The color sequence for the wires in the T568B standard are as follows:

1. Orange/White
2. Orange
3. Green/White
4. Blue
5. Blue/White
6. Green
7. Brown/White
8. Brown

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When a PC does not have a static IP address or cannot pick one up from a DHCP server, Windows will automatically assign the PC an IP address using APIPA, that uses the range of addresses 169.254.0.0 to 169.254.255.255.

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Cable television companies and satellite communication systems both use copper or aluminum coaxial cable for connections between devices.

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The TCP/IP model includes four layers. The application layer, the transport layer, the internet layer, and the network access layer. Each layer supports different protocols and functions. The internet layer supports routing and routing protocols.

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The TCP/IP model includes four layers. The application layer, the transport layer, the internet layer, and the network access layer. The functions at each layer include different protocols. The transport layer includes both the TCP and the UDP protocols.

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The OSI model divides network communications into seven layers. It is used to ensure that equipment and applications that are developed by one vendor are compatible with equipment and applications developed by other vendors.

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A WAN connects multiple LANs that are in geographically separated locations. A MAN connects multiple LANs in a large campus or in a city. WLAN is a wireless LAN that covers a rather small geographic area.