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34 Cards in this Set
- Front
- Back
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What topology consists of a simple cable, or bus, to which all devices attach? |
Bus |
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The interval during which the signals propagate down the bus and back is the what? |
Collision window |
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The what is used to connect LANs to WANs? |
Router |
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What device interconnects two or more workstations in a star-wired bus LAN and immediately retransmits the data it receives from any workstation out to all other workstations connected? |
Hub |
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The primary goal of a(n) what is to isolate a particular pattern is traffic from other patterns of traffic or from the remainder of the network? |
Switch |
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Which transmission type refers to the transmission to all nodes on a network? |
Broadcast |
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An IP address reserved for communicating from a node to itself is called what? |
A loopback address |
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What is a unique number that permanently identifies a network node? |
MAC address |
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What is a connectivity device that operates at the Data Link layer of the OSI model and reads header information to forward packets according to their MAC addresses? |
Bridge |
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What is a method of routing that automatically calculates the best path between two nodes and accumulates this information in a routing table? |
Dynamic routing |
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A combination of networking hardware and software that connects to dissimilar kinds of networks is known as: |
Gateway |
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What area network type can cover large geographic distances, including the entire Earth? |
Wide (WAN) |
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The SONET network topology is what type of topology? |
Ring |
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In a ring network, each workstation acts as what for the transmission? |
Repeater |
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1000Base-SX has a maximum throughput of how much? |
1 Gbps |
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The 10GBase-T standard is considered a breakthrough for transmitting 10 Gbps over what medium? |
Twisted pair |
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All Ethernet networks, independent of their speed or frame type, use an access method called what? |
CSMA/CD |
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On an Ethernet network, what is the portion of a network in which collisions occur if two nodes transmit data at the same time? |
Collision domain |
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When a node on a WAN ______ network transmits its data, the data is received by all the other nodes. |
Broadcast |
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_____ and virtual circuit networks require path setup time and cannot dynamically reroute packets should a network problem occur. |
Circuit-switched |
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What network type is the only network that offers a dedicated path? |
Circuit-switched |
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What is the main telecommunications line through the network, connecting the major router sites across the country? |
Backbone |
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WANs typically send data over _______ owned comminations networks. |
Privately |
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What does: "They maintain a filtering database that identifies which frames can be filtered and which should be forwarded, based on their destination MAC address." Describe? |
How bridges keep track of whether they should forward or filter frames. |
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What distinguishes switches from repeating devices, such as hubs? |
Switches separate collision domains |
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In cut-through switching, which frame field does the switch never read? |
Frame check sequence |
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You are asked to configure a backbone switch that connects servers supplying weather data to mariners and pilots around the world. Your network's traffic load is very high at all times, day and night. What type of switching do you configure the switch to use? |
Store-and-forward switching |
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Which of the following factors is not considered when OSPF determines the best path for a packet? |
Number of hops |
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What is a router's convergence time? |
The time it takes for a router to recognize a best path in the event of a change or network outage |
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What is an advantage of using a parallel backbone over a collapsed backbone? |
A parallel backbone uses redundant connections and is more reliable. |
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What is a key difference between a router and a hub according to the OSI? |
A router operates at the Network layer of the OSI model, where as a hub operates at the Physical layer of the OSI model |
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What is CSMA/CD? What does it stand for? |
It is an access method. It stands for Carrier Sense Multiple Access With Collision Detection. |
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What amount of NIC on the network are listening to traffic with CSMA/CD. Why? |
All NIC are listening to traffic. They are waiting for the line to be free because only one NIC can transmit at a time. |
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How do NICs check for collision under CSMA/CD? What do they do if there is a collision? |
They check for collision via transmission. A collision jams the network line, so CSMA/CD stops and retransmits again, causing a delay |
