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NETWORKING SA2
| Question | Answer |
|---|---|
| Which characteristic describes crosstalk? | the distortion of the transmitted messages from signals carried in adjacent wires |
| A network administrator is designing a new network infrastructure that includes both wired and wireless connectivity. Under which situation would a wireless connection be recommended? | The end-user device needs mobility when connecting to the network. |
| What is a characteristic of UTP cabling? | cancellation |
| Which standards organization oversees development of wireless LAN standards? | IEEE |
| What is the definition of bandwidth? | the amount of data that can flow from one place to another in a given amount of time |
| A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized? | physical layer |
| What is the purpose of the OSI physical layer? | transmitting bits across the local media |
| Which statement correctly describes frame encoding? | It converts bits into a predefined code in order to provide a predictable pattern to help distinguish data bits from control bits. |
| A wireless LAN is being deployed inside the new one room office that is occupied by the park ranger. What are two possible causes of the signal distortion? (Choose two.) | the microwave oven and the cellular phones that are used by the employees |
| Why are two strands of fiber used for a single fiber optic connection? | They allow for full-duplex connectivity. |
| What is the equivalent to decimal of the hexadecimal 5A? | 90 |
| What is the equivalent to decimal of the hexadecimal CA? | 202 |
| What is the equivalent to hexadecimal of the decimal 34? | 22 |
| What is the equivalent to decimal of the hexadecimal A5? | 165 |
| What is the equivalent to decimal of the hexadecimal 6A? | 106 |
| What is the equivalent to hexadecimal of the decimal 51? | 33 |
| What is the equivalent to decimal of the hexadecimal CB? | 203 |
| What is the equivalent to hexadecimal of the decimal 41? | 29 |
| What is the equivalent to decimal of the hexadecimal B1? | 177 |
| What is the equivalent to hexadecimal of the decimal 31? | 1F |
| Although CSMA/CD is still a feature of Ethernet, why is it no longer necessary? | the use of full-duplex capable Layer 2 switches |
| Which data link layer media access control method does Ethernet use? | CSMA/CD |
| What identifier is used at the data link layer to uniquely identify an Ethernet device? | MAC address |
| What type of physical topology can be created by connecting all Ethernet cables to a central device? | star |
| What are the two sublayers of the OSI model data link layer? (Choose two.) | MAC and LLC |
| Which two engineering organizations define open standards and protocols that apply to the data link layer? (Choose two.) | Electronic Industries Alliance (EIA) and International Organization for Standardization (ISO) |
| Which statement describes the half-duplex mode of data transmission? | Data that is transmitted over the network flows in one direction at a time. |
| What method is used to manage contention-based access on a wireless network? | CSMA/CA |
| What are two services performed by the data link layer of the OSI model? (Choose two.) | It provides media access control and performs error detection, and it accepts Layer 3 packets and encapsulates them into frames. |
| Which layer of the OSI model is responsible for specifying the encapsulation method used for specific types of media? | data link |
| What are the two sizes (minimum and maximum) of an Ethernet frame? (Choose two.) | 64 bytes and 1518 bytes |
| What statement describes a characteristic of MAC addresses? | They must be globally unique. |
| Which function or operation is performed by the LLC sublayer? | It communicates with upper protocol layers. |
| What is auto-MDIX? | a feature that detects Ethernet cable type |
| What type of address is 01-00-5E-0A-00-02? | an address that reaches a specific group of hosts |
| Which two characteristics describe Ethernet technology? (Choose two.) | It is supported by IEEE 802.3 standards and it uses the CSMA/CD access control method. |
| Which network device has the primary function to send data to a specific destination based on the information found in the MAC address table? | switch |
| What addressing information is recorded by a switch to build its MAC address table? | the source Layer 2 address of incoming frames |
| Which statement is true about MAC addresses? | The first three bytes are used by the vendor assigned OUI. |
| Which two functions or operations are performed by the MAC sublayer? (Choose two.) | It is responsible for Media Access Control and it adds a header and trailer to form an OSI Layer 2 PDU. |
| Which type of UTP cable is used to connect a PC to a switch port? | straight-through |
| What type of cable is used to connect a workstation serial port to a Cisco router console port? | rollover |
| What is one advantage of using fiber optic cabling rather than copper cabling? | It is able to carry signals much farther than copper cabling. |
| What is indicated by the term throughput? | the measure of the usable data transferred across the media |
| What is the equivalent to hexadecimal of the decimal 52? | 34 |
| What is the equivalent to hexadecimal of the decimal 44? | 2C |
| What is the equivalent to hexadecimal of the decimal 53? | 35 |
| What is the equivalent to decimal of the hexadecimal AD? | 173 |
| What is the equivalent to decimal of the hexadecimal A7? | 167 |
| What is the equivalent to decimal of the hexadecimal 4A? | 74 |
| What is the equivalent to hexadecimal of the decimal 32? | 20 |
| What is the equivalent to decimal of the hexadecimal 9A? | 154 |
| What is the equivalent to hexadecimal of the decimal 21? | 15 |
| What does a router do after de-encapsulating a received frame? | determines the best path |
| What is true concerning physical and logical topologies? | Logical topologies refer to how a network transfers data between devices. |
| Which is a function of the Logical Link Control (LLC) sublayer? | to identify which network layer protocol is being used |
| What attribute of a NIC would place it at the data link layer of the OSI model? | MAC address |
| Which layer of the OSI model is responsible for specifying the encapsulation method used for specific types of media? | data link |
| What is the special value assigned to the first 24 bits of a multicast MAC address? | 01-00-5E |
| What happens to runt frames received by a Cisco Ethernet switch? | The frame is dropped. |
| Which network device makes forwarding decisions based on the destination MAC address that is contained in the frame? | switch |
| What will a host on an Ethernet network do if it receives a frame with a destination MAC address that does not match its own MAC address? | It will discard the frame. |
Created by:
Va_li