Exam 1 - Intro Information Technology Questions And Answers Solution Guaranteed.

Which layer provides flow control and ensures data reliability from source to destination? a. network b. transport c. application d. data link - correct answers b. transport In a mesh topology network, how many connections are needed for a one hundred node network? a. 4,950 b. 3,225 c. 1.435 d. 1,000 - correct answers a. 4,950 One task of the ____ layer in a LAN is to handle error detection using a CRC. a. transport b. data link c. application d. session - correct answers b. data link Which layer can route data on different paths by creating virtual circuits? a. data link b. transport c. network d. application - correct answers c. network The smallest T-carrier service is T-1. True/False - correct answers True The ____ topology consists of running cable from one PC or file server to the next, like links in a chain. a. mesh b. bus c. star d. tree - correct answers b. bus A VPN, is another type of network, like LAN or WAN, and means Virtual Personal Network and is mostly used for short range communications. True/False - correct answers False The term ____ refers to wrapping the information in one layer inside the information within the next layer. a. firewall b. encapsulate c. fault-tolerance d. full-duplex - correct answers b. encapsulate The ____ topology is a continuous path for data with no logical beginning or ending point. a. mesh b. ring c. tree d. bus - correct answers b. ring The ____ field in an Ethernet frame synchronizes frame transmission and consists of an alternating pattern of zeroes and ones. a. frame check sequence (FCS) b. preamble c. start of frame delimiter (SFD) d. destination address - correct answers b. preamble ____ is a process that scrambles the data so that it cannot be read if intercepted by unauthorized users. a. transport b. encryption c. analog d. beaconing - correct answers b. encryption The Ethernet LAN transmission method can detect a collision has occurred by which of the following? a. broadcast storms b. half-duplex c. full-duplex d. the signal strength is two times the normal strength - correct answers d. the signal strength is two times the normal strength A(n) ____ line is a dedicated telephone line that can be used for data communications to connect two different locations for continuous point-to-point communications. a. ethernet b. t-carrier c. twisted-pair d. transceive - correct answers b. t-carrier Which of the following allows you to configure Windows 7 as a host that allows client computers to access the Internet. a. IP b. HTTP c. ICS d. NAT - correct answers c. ICS Which of the following is an example of a wireless PAN technology? a. Ethernet b. Bluetooth c. Wifi d. Vertical Cabling - correct answers b. Bluetooth A ____ specifies how networked data is formatted into discrete units, such as packets or frames. a. topology b. wired path c. protocol d. HTTP - correct answers c. protocol Which of the following commands can be used to test whether a peer node is reachable? a. ping b. tcpdump c. run d. beacon - correct answers a. ping Analog signals are the basis of the most common signaling method used on LANs and high-speed WANs. True/False - correct answers False If no broadcasts are detected from the active monitor or any one of the standby monitors, a ring goes into a ____ condition. a. roll-by b. terminating c. beaconing d. signaling - correct answers c. beaconing Which layer is responsible for establishing and maintaining the communications link between nodes? a. Layer 1 b. Layer 3 c. Layer 4 d. Layer 5 - correct answers d. Layer 5 A ____ is a workstation that accesses software and data through the network on another computer. a. node b. host c. client d. virtual machine - correct answers c. client Which layer governs a user's access to network services? a. session b. application c. data link d. presentation - correct answers b. application The ____ topology is the oldest communications design method, with roots in telephone switching systems. a. tree b. mesh c. star d. bus - correct answers c. star The OSI model consists of ____ distinct layers stacked on one another. a. Five b. Six c. Seven d. Eight - correct answers c. Seven Which of the following is an address associated with a NIC? a. HTTP b. MAC c. IP d. None of the Above - correct answers b. MAC The term "____" refers to built-in protection against equipment or communications failure. a. Full-duplex b. Back-up c. Fault-Tolerance