Term
| It is the aggregate amount of information that is transmitted on a communications medium. It is measured in bits per second and plays an important role for network performance analysis. |
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Definition
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Term
| ___________ is experienced over long distances as a signal loses strength. |
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Definition
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Term
| Noise caused by electromagnetic signals, which can decrease data integrity. |
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Definition
| Electromagnetic Interference (EMI) |
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Term
| An electrical or magnetic field originating from one communications signal that can affect the signal in a nearby circuit. |
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Definition
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Term
| Crosstalk measured at the transmitting end of a cable. |
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Definition
| Near-end Crosstalk (NEXT) |
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Term
| Crosstalk measured at the far end of the cable from where the transmission was sent. |
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Definition
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Term
| These cables use four wires and pins 1, 2, 3 and 6. Pin 1 is connected on one end of the cable to the corresponding pin 1 on the other side of the cable and similarly for Pin 2 and the other pins. |
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Definition
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Term
Telephone Cable
Primarily used for Data Transmission. |
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Definition
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Term
Data Cable
Can handle speeds up to 4Mpbs. |
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Definition
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Term
Data Cable
Can handle speeds up to 10Mpbs. |
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Definition
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Term
Data Cable
Can handle speeds up to 16 Mpbs.
It has to be used with token ring. |
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Definition
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Term
Data Cable
Can handle speeds up to 100Mpbs. |
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Definition
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Term
Data Cable
Can handle upto 1Gbps. |
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Definition
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Term
Data Cable
Can handle speeds exceeding 1Gpbs |
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Definition
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Term
| These cables also use four wires and pins 1, 2, 3, and 6. The difference is in how the pins are connected at each end. They differ from the Straight Through Cable with respect to the fact that, in these wires, pin 1 connects to pin 3 and pin 2 connects pin 6. |
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Definition
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Term
| These cables use eight wires and are used to connect a host to a console serial communications (com) port on a router. The other name for this cable is a console cable. For connecting a PC to a router, a hub to another hub these cables are used. |
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Definition
| TIP Rolled Cable/Rollover Cable |
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Term
| _______ Distribution Frame creates a connection between external telecommunications cabling and internal cabling |
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Definition
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Term
| _______ Distribution Frame creates connection for cabling between the MDF and end user devices. |
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Definition
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Term
| With the facility of __________, physical connections are not needed and it uses electromagnetic waves are used for connectivity. |
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Definition
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Term
| The determination of how data traverses the Radio Frequency is done by ___________________. |
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Definition
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Term
| What are the two types of Spread Spectrum WLANs? |
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Definition
| Direct Sequencing Spread Spectrum (DSSS, and Frequency-Hopping Spread Spectrum (FHSS). |
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Term
| What Wi-fi standard operates in the 5GHz range, supports speeds up to 54 Mbps? |
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Definition
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Term
| What Wi-fi standard operates in the 2.4GHz range, supports speeds up to 11 Mbps? |
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Definition
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Term
| What Wi-fi standard operates in the 2.4GHz range, supports speeds up to 54 Mbps? |
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Definition
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Term
| What is the maximum speed of infrared technology? |
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Definition
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Term
| What is the frequency range and throughput of Bluetooth technology? |
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Definition
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Term
| What is the maximum distance between devices when utilizing Bluetooth? |
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Definition
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Term
| Ethernet was defined by the IEEE ______ specification. |
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Definition
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Term
| What is contained in the first three bytes of a device's MAC addresses? |
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Definition
| Organization Unique Identifier (OUI) |
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Term
| What is contained in the last three bytes of a MAC address? |
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Definition
| A unique number assigned to an individual device |
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Term
| It is also known as the unicast address. The MAC address of an individual LAN or NIC card is identified by this address. |
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Definition
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Term
| It is also known as a multicast address. When a frame is sent to a group of devices on the same LAN it is known as a group address. |
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Definition
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Term
| What are the two categories of Ethernet LAN addresses? |
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Definition
| Individual and Group Addresses |
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Term
| What are the three rules for defining a multicast address? |
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Definition
- It begins with 0100.5E in hexadecimal format;
- The last three bytes are a combination of hexadecimal digits;
- In the case of IP routed protocol a multicast address appears as 0100.5Exx.xxxx, where the x‘s can represent any hex digit from 0–9 or A–F. |
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Term
| _____________ is a frame that is sent to all devices in the same LAN segment. |
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Definition
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Term
| Multicast and broadcast addresses are limited to a _________________. |
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Definition
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Term
| What is the name of the Control Information on the Application, Presentation, and Session OSI Layers? |
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Definition
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Term
| What is the name of the Control Information on the Transport OSI Layer? |
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Definition
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Term
| What is the name of the Control Information on the Network OSI Layer? |
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Definition
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Term
| What is the name of the Control Information on the Data Link OSI Layer? |
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Definition
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Term
| __________ are used to transport data between layers. |
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Definition
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Term
| The 802.2 LLC _______ sub-layer is an extension of 802.3 and is responsible for framing, error-detection, and flow control. |
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Definition
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Term
| This is part of the 802.3 frame. It contains the destination MAC Address, Source MAC Address and length. |
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Definition
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Term
| This is part of the 802.3 frame. It contains the Destination Service Access Point (DSAP), Source Service Access Point (SSAP), and control information |
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Definition
| Logical Link Control Portion |
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Term
| The other name for this is the data-link trailer. The length of this field can be anywhere from 43 to 1497 bytes out of which the frame check sequence (FCS) field is 4 bytes long. It is part of the 802.3 frame |
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Definition
| The Data and Cyclical Redundancy Check (CRC) Portion |
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Term
| A __________ encompasses a set of devices for which, when one of the devices sends a broadcast, all the other devices receive a copy of the broadcast. |
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Definition
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Term
| A ______________ is a set of network interface cards (NIC) for which a frame sent by one NIC could result in a collision with a frame sent by any other NIC in the same ___________. |
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Definition
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Term
| What two things are true about devices in a single collision domain? |
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Definition
* The devices share the available bandwidth.
* The devices may inefficiently use that bandwidth due to the effects of collisions, particularly under higher utilization. |
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Term
| While a _______________ can separate the broadcast domain, a _______ can form different Vlans and use the network bandwidth more efficiently providing segregation at the same time. |
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Definition
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Term
| A Switch consults the ___________ while deciding which port the Ethernet frame is to be forwarded. |
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Definition
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Term
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Definition
| Content Addressable Memory |
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Term
| In ________, the switch copies and forwards the frame of every port except the one at which it was received. |
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Definition
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Term
| In case an address is not in the table, _______ takes place. |
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Definition
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Term
| The process of ________ is that when the frame reaches the switch, and the source and destination MAC addresses are present on the same interface, it does not send that frame on to any other ports. |
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Definition
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Term
| What are the three frame transmission methods? |
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Definition
| Store and Forward, Cut Through, and Fragment Free |
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Term
| This method involves the switch which buffers the Ethernet frame and performs Cyclic Redundancy Check (CRC) on the entire frame. It ensures that the frame is not corrupted. The frame is forwarded if the CRC calculation is normal otherwise it is dropped. |
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Definition
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Term
| This is the most commonly followed method of switching in Cisco Catalyst switches. This is so because the hardware processors for the interfaces are so advanced and robust that the switch hardly works up a sweat. |
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Definition
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Term
| This method is completely opposite of the store and forward frame transmission. In this only the MAC address in the Ethernet header is considered and the frame is sent to it. The frame is not analyzed for any errors. This was acceptable for low processing power devices. |
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Definition
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Term
| This method buffers the first 64 bytes of a frame. It ensures that many of the invalid frames are not transmitted. |
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Definition
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Term
| In this transmission type Carrier Sense Multiple Access with collision Detection CSMA/CD is enabled. As a result 50% to 60% of the bandwidth on the link can be used. |
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Definition
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Term
| This transmission type is a two way communication, date can be sent and received at one time. CSMA/CD is disabled in this and as a result 100% of the bandwidth is available for both the directions. Collision and Transmission takes place with the help of two wires. |
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Definition
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Term
| Based on the ___ addresses, Cisco Layer 2 switches forward frames and _____ addresses are used by Layer 3 switches in their data forwarding decisions. |
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Definition
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Term
| To be able to manage a device via SSH, Telnet, or HTTP that is remotely, _________ to the switch is essential. |
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Definition
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Term
| The IP assigned to the VLAN 1 interface and the default gateway can both be assigned using a ___________ just as in the case of Router Interfaces. |
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Definition
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Term
| It is best to troubleshoot connectivity issues by adopting a ____________ approach. |
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Definition
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Term
| What is the IEEE standard for auto negotiation? |
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Definition
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Term
| Auto negotiation issues usually results in what kind of issues? |
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Definition
| Performance related issues |
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Term
| Speed mismatches result in what kind of issues? |
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Definition
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Term
| When troubleshooting NIC issues, what is the first step? |
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Definition
| Verify physical connectivity |
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Term
| when running the show interfaces command, what indicates a physical problem? |
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Definition
| States other than connected and line protocol is up |
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Term
| What is the first step in troubleshooting physical connectivity? |
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Definition
| Manually set the speed and duplex settings |
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Term
| After setting the speed and duplex, what is the next step in troubleshooting physical connectivity issues? |
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Definition
| Replace the cable with a known good cable |
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Term
| After replacing the cable with a known good cable, what is the next step for troubleshooting a physical connectivity issue? |
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Definition
| Attempt physical connectivity across multiple switch port |
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Term
| What is the last resort when troubleshooting physical connectivity issues? |
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Definition
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Term
| When you troubleshoot any NIC or switch port issue, verify what two things? |
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Definition
| the configuration of port channeling and trucking is off and that spanning tree Port Fast is enabled. |
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