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Networking Mod 3&4
| Question | Answer |
|---|---|
| Which type of UTP cable is used to connect a PC to a switch port? | straight-through |
| 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 |
| What is one advantage of using fiber optic cabling rather than copper cabling? | It is able to carry signals much farther than copper cabling. |
| Which characteristic describes crosstalk? | the distortion of the transmitted messages from signals carried in adjacent wires. |
| What type of cable is used to connect a workstation serial port to a Cisco router console port? | rollover |
| What is indicated by the term throughput? | the measure of the bits transferred across the media over a given period of time. |
| Which procedure is used to reduce the effect of crosstalk in copper cables? | twisting opposing circuit wire pairs together. |
| A wireless LAN is being deployed inside the new one room office that is occupied by the park ranger. The office is located at the highest part of the national park. After network testing is complete, the technicians report that the wireless | the microwave oven the cellular phones that are used by the employees |
| 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 equivalent to hexadecimal of the decimal 52 ? | 34 |
| What is the equivalent to decimal of the hexadecimal 6A ? | 106. |
| What is the equivalent to decimal of the hexadecimal A7 ? | 167 |
| What is the equivalent to decimal of the hexadecimal 7A ? | 122 |
| What is the equivalent to decimal of the hexadecimal AD ? | 173 |
| What is the equivalent to decimal of the hexadecimal A1 ? | 161 |
| What is the equivalent to hexadecimal of the decimal 33 ? | 21 |
| What is the equivalent to hexadecimal of the decimal 22 ? | 16 |
| What is the equivalent to decimal of the hexadecimal A3 ? | 163 |
| What is the equivalent to decimal of the hexadecimal A ? | None of the above |
| What is the equivalent to decimal of the hexadecimal CA ? | 202 |
| A technician has been asked to develop a physical topology for a network that provides a high level of redundancy. Which physical topology requires that every node is attached to every other node on the network? | mesh |
| Although CSMA/CD is still a feature of Ethernet, why is it no longer necessary? | the use of full-duplex capable Layer 2 switches |
| What does a router do after de-encapsulating a received frame? | determines the best path |
| 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. - It accepts Layer 3 packets and encapsulates them into frames. |
| Which is a function of the Logical Link Control (LLC) sublayer? | to identify which network layer protocol is being used |
| What type of physical topology can be created by connecting all Ethernet cables to a central device? | star |
| Which statement describes the half-duplex mode of data transmission? | Data that is transmitted over the network flows in one direction at a time. |
| Which two engineering organizations define open standards and protocols that apply to the data link layer? (Choose two.) | - International Telecommunication Union (ITU) - International Organization for Standardization (ISO) |
| Which data link layer media access control method does Ethernet use? | CSMA/CD |
| Which layer of the OSI model is responsible for specifying the encapsulation method used for specific types of media? | data link |
| 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. |
| What is auto-MDIX? | a feature that detects Ethernet cable type |
| What are the two sizes (minimum and maximum) of an Ethernet frame? (Choose two.) | 1518 bytes |
| What type of address is 01-00-5E-0A-00-02? | an address that reaches a specific group of hosts |
| What addressing information is recorded by a switch to build its MAC address table? | the source Layer 2 address of incoming frames |
| Which two characteristics describe Ethernet technology? (Choose two.) | It is supported by IEEE 802.3 standards. - It uses the CSMA/CD access control method. |
| Which function or operation is performed by the LLC sublayer? | It communicates with upper protocol layers. |
| Which network device makes forwarding decisions based on the destination MAC address that is contained in the frame? | switch |
| What is the special value assigned to the first 24 bits of a multicast MAC address? | 01-00-5E |
| Which two functions or operations are performed by the MAC sublayer? (Choose two.) | - It is responsible for Media Access Control. - It adds a header and trailer to form an OSI Layer 2 PDU. |
| Why are two strands of fiber used for a single fiber optic connection? | They allow for full-duplex connectivity. |
| What is the purpose of the OSI physical layer? | transmitting bits across the local media |
| What is the definition of bandwidth? | the amount of data that can flow from one place to another in a given amount of time |
| 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. |
| What is the equivalent to hexadecimal of the decimal 34 ? | 22 |
| What is the equivalent to hexadecimal of the decimal 44 ? | 2C |
| What is the equivalent to decimal of the hexadecimal A ? | 10 |
| What is the equivalent to decimal of the hexadecimal B1 ? | 177 |
| What is the equivalent to decimal of the hexadecimal AE ? | 174 |
| What is the equivalent to hexadecimal of the decimal 31 ? | 1F |
| What is the equivalent to hexadecimal of the decimal 23 ? | 17 |
| What is the equivalent to decimal of the hexadecimal CC ? | 204 |
| What is the equivalent to hexadecimal of the decimal 20 ? | 14 |
| What is true concerning physical and logical topologies? | Logical topologies refer to how a network transfers data between devices. |
| What are the two sublayers of the OSI model data link layer? (Choose two.) | LLC MAC |
| What method is used to manage contention-based access on a wireless network? | CSMA/CA |
| What identifier is used at the data link layer to uniquely identify an Ethernet device? | MAC address |
| Which statement is true about MAC addresses? | The first three bytes are used by the vendor assigned OUI. |
| What happens to runt frames received by a Cisco Ethernet switch? | The frame is dropped. |
| What statement describes a characteristic of MAC addresses? | They must be globally unique. |
| 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 |
| Which standards organization oversees development of wireless LAN standards? | IEEE |
| What is the equivalent to decimal of the hexadecimal 2A ? | 42 |
| What is the equivalent to decimal of the hexadecimal A2 ? | 162 |
| What is the equivalent to decimal of the hexadecimal B ? | 11 |
| What is the equivalent to decimal of the hexadecimal 4A ? | 74 |
| What is the equivalent to hexadecimal of the decimal 71 ? | 47 |
| What is the equivalent to hexadecimal of the decimal 64 ? | 40 |
| What is the equivalent to decimal of the hexadecimal 8A ? | 138 |
| What is the equivalent to decimal of the hexadecimal A8 ? | 168 |
| What attribute of a NIC would place it at the data link layer of the OSI model? | MAC address |
| Which field in an IPv6 packet is used by the router to determine if a packet has expired and should be dropped? | Hop Limit |
| What was the reason for the creation and implementation of IPv6? | to relieve IPv4 address depletion |
| When a router receives a packet, what information must be examined in order for the packet to be forwarded to a remote destination? | destination IP address |
| Which field in an IPv4 packet header will typically stay the same during its transmission? | Destination Address |
| Which information is used by routers to forward a data packet toward its destination? | destination IP address |
| Which characteristic describes an IPv6 enhancement over IPv4? | The IPv6 header is simpler than the IPv4 header is, which improves packet handling. |
| Which IPv4 address can a host use to ping the loopback interface? | 127.0.0.1 |
| What information is added during encapsulation at OSI Layer 3? | source and destination IP address |
| A computer has to send a packet to a destination host in the same LAN. How will the packet be sent? | The packet will be sent directly to the destination host. |
| Which statement accurately describes a characteristic of IPv4? | IPv4 has a 32-bit address space. |
| When an IP packet is sent to a host on a remote network, what information is provided by ARP? | the MAC address of the router interface closest to the sending host |
| Which destination address is used in an ARP request frame? | FFFF.FFFF.FFFF |
| How does the ARP process use an IP address? | to determine the MAC address of a device on the same network |
| The ARP table in a switch maps which two types of address together? | Layer 3 address to a Layer 2 address |
| A cybersecurity analyst believes an attacker is spoofing the MAC address of the default gateway to perform a man-in-the-middle attack. Which command should the analyst use to view the MAC address a host is using to reach the default gateway? | arp -a |
| What will a Layer 2 switch do when the destination MAC address of a received frame is not in the MAC table? | It forwards the frame out of all ports except for the port at which the frame was received. |
| What is a function of ARP? | resolving IPv4 addresses to MAC addresses |
| Which router component holds the routing table, ARP cache, and running configuration file? | RAM |
| Which action is taken by a Layer 2 switch when it receives a Layer 2 broadcast frame? | It sends the frame to all ports except the port on which it received the frame. |
| Which two ICMPv6 messages are used during the Ethernet MAC address resolution process? (Choose two.) | neighbor solicitation neighbor advertisement |
| What is stored in the NVRAM of a Cisco router? | the startup configuration |
| An administrator is configuring a new router to permit out-of-band management access. Which set of commands will allow the required login using a password of cisco? | Router(config)# line console 0 Router(config-line)# password cisco Router(config-line)# login |
| Company policy requires using the most secure method to safeguard access to the privileged exec and configuration mode on the routers. The privileged exec password is trustknow1. Which of the following router commands achieves the goal of prov | enable secret trustknow1 |
| Which command is used to encrypt all passwords in a router configuration file? | Router_A (config) # service password-encryption |
| Which CLI mode allows users to access all device commands, such as those used for configuration, management, and troubleshooting? | privileged EXEC mode |
| What is the purpose of the banner motd command? | It provides a way to make announcements to those who log in to a router. |
| Which statement regarding the service password-encryption command is true? | As soon as the service password-encryption command is entered, all currently set passwords formerly displayed in plain text are encrypted. |
| Which command can be used on a Cisco router to display all interfaces, the IPv4 address assigned, and the current status? | show ip interface brief |
| A technician is configuring a router to allow for all forms of management access. As part of each different type of access, the technician is trying to type the command login. Which configuration mode should be entered to do this task? | any line configuration mode |
| Which characteristic describes the default gateway of a host computer? | the logical address of the router interface on the same network as the host computer |
| How does the network layer use the MTU value? | The MTU is passed to the network layer by the data link layer. |
| Which command can be used on a Windows host to display the routing table? | netstat -r |
| What addresses are mapped by ARP? | destination MAC address to a destination IPv4 address |
| What is the purpose of ARP in an IPv4 network? | to obtain a specific MAC address when an IP address is known |
| What type of information is contained in an ARP table? | IP address to MAC address mappings |
| A router boots and enters setup mode. What is the reason for this? | The configuration file is missing from NVRAM. |
| What is the purpose of the startup configuration file on a Cisco router? | to contain the commands that are used to initially configure a router on startup |
| What will be the response from the router after the command, "router(config)# hostname portsmouth" is entered? | portsmouth(config)# |
| When a connectionless protocol is in use at a lower layer of the OSI model, how is missing data detected and retransmitted if necessary? | Upper-layer connection-oriented protocols keep track of the data received and can request retransmission from the upper-level protocols on the sending host. |
Created by:
jajacoal