1. When connectionless protocols are implemented at the lower layers of the OSI model, what are usually used to acknowledge the data receipt and request the retransmission of missing data? connectionless acknowledgements upper-layer connection-oriented protocols* Network layer IP protocols Transport layer UDP protocols 2. Which IPv4 header field …

1. Which statement is true about MAC addresses? MAC addresses are implemented by software. A NIC only needs a MAC address if connected to a WAN. The first three bytes are used by the vendor assigned OUI.* The ISO is responsible for MAC addresses regulations. 2. What is …

1. Which layer of the OSI model is responsible for specifying the encapsulation method used for specific types of media? application transport data link* physical 2. Which statement describes signaling at the physical layer? Sending the signals asynchronously means that they are transmitted without a clock signal.* In …

1. A computer in a given network is communicating with a specific group of computers. What type of communication is this? broadcast multicast* unicast ARP HTTP 2. What method can be used by two computers to ensure that packets are not dropped because too much data is being …

1. Which two features are characteristics of flash memory? (Choose two.) Flash provides nonvolatile storage. Flash receives a copy of the IOS from RAM when a device is powered on. The contents of flash may be lost during a power cycle. Flash is a component in Cisco switches …

1. What two criteria are used to help select network media? (Choose two.) the types of data that need to be prioritized the cost of the end devices utilized in the network the distance the media can successfully carry a signal* the number of intermediary devices installed in …

1. Convert the decimal number 231 into its binary equivalent. Select the correct answer from the list below. 11110010 11011011 11110110 11100111* 11100101 11101110 2. Convert the binary number 10111010 into its hexadecimal equivalent. Select the correct answer from the list below. 85 90 BA* A1 B3 1C …

1. What is a characteristic of a fault tolerant network? a network that protects confidential information from unauthorized access a network that can expand quickly to support new users and applications without impacting the performance of the service delivered to existing users a network that supports a mechanism …

1. Which term refers to a network that provides secure access to the corporate offices by suppliers, customers and collaborators? Internet intranet extranet* extendednet   2. A small business user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP …

1. A newly hired network technician is given the task of ordering new hardware for a small business with a large growth forecast. Which primary factor should the technician be concerned with when choosing the new devices? devices with a fixed number and type of interfaces devices that …