Network + Devices and Layers Concentrates on questions that may appear on CompTIA Network + exam including device and OSI layer. carlyspade published on February 11, 20155 responses 0 Questions in vertical order What is the function of a firewall? Protects LAN resources from attackers on the internet. Reduces throughput. Provides extra bandwidth. A layer-3 switch, or multilayer switch. Type answer (6 letters) Which device does not aid in network segmentation? Hub Switch Bridge What is an advantage of using DHCP in a network environment? Assigns IP address to hosts Static IP addressing More difficult administration of the network. Which type of server in your network uses pointer and A records? NAT translation server IPS/IDS server DNS Server Which of the following devices can work at both Layers 2 and 3 of the OSI model? Bridge Hub Switch This device sends a receives information about the Network layer. Type answer (6 letters) This device creates many smaller collision domains, but the network is still one large broadcast domain. Type answer (6 letters) Ethernet is defined at these layers. Type answer (22 letters) What is a benefit of a multilayer switch (MLS) over a Layer 2 switch? Less bandwidth Routing functions Fewer features Logical addressing is used at this layer. Type answer (7 letters) Which device is used to segment a network? Switch Hub Repeater Users on your network are saturating your bandwidth because they are using too many nonwork related sites. What device would limit the availability of the types of sites that users on a LAN have access to while providing granular control over the traffic between the local LAN and the internet? DHCP server DNS server Proxy server A network device that is used to connect multiple devices together without segmenting a network is? Wireless access point Switch Hub Which is not an advantage of network segmentation? Reduced congestion Improved security Preventing broadcast storms What role does the A record in a Domain Name Service server have in your network? Translates human name to IP address Translates IP address to human name Enables printing, copying, and faxing from one device What device should be used if you need to send incoming packets to one or more machines that are hidden behind a single IP address? Switch Load balancer Hub This layer creates a virtual circuit before transmitting between two end stations. Type answer (9 letters) This device can measure the distance to a remote network. Type answer (6 letters) This devices uses hardware addresses to filter a network. Type answer (6 letters) Which device creates separate collision domains and a single broadcast domain? Hub Router Switch Which is not a common term associated with modems? DSL Cable NIC This device can never run full duplex. Type answer (3 letters) What is the primary function of a bridge? Allows mobile users to connect to a wired network wirelessly. Breaks up collision domains. None. Users arrive at the office after a weekend and the hosts that were shut down over the weekend are restarted but cannot access the LAN or internet. Hosts were not shut down are working fine. Where can the problem be? The DNS server The DHCP server The Proxy server This device breaks up collision domains and broadcast domains. Type answer (6 letters) What advantage does a switch have over a hub? Transmission received on one port will be sent out all other ports It recognizes frame boundaries and destination MAC addresses of incoming frames. It discards frames. What is the most common use for a web proxy? Web cache Increases throughput Supports user authentication Which device by default does not forward any broadcast or multicast packets? Repeater Hub Router This layer supports flow control and sequencing. Type answer (9 letters) This device creates one big collision domain and one large broadcast domain. Type answer (3 letters) You need a device that detects and reports attempts of unauthorized access to your network, identifies suspicious activity, and is best for identifying an attack. Which device should you install? Firewall IDS IPS Hardware addresses are defined at this layer. Type answer (9 letters)
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