Networking Midterm
What is the decimal equivalent of 0xC9? 200 201 185 199
201
What is the special value assigned to the first 24 bits of a multicast MAC address transporting an IPv4 packet? 01-5E-00 FF-00-5E 01-00-5E FF-FF-FF
01.00.5E
To what subnet does the IP address 10.1.100.50 belong if a subnet mask of 255.255.0.0 is used? 10.1.0.0 10.1.100.32 10.0.0.0 10.1.100.0
10.1.0.0
What is the dotted decimal representation of the IPv4 address which is represented as the binary string 00001010.01100100.00010101.00000001? 100.10.11.1 10.10.20.1 100.21.10.1 10.1000.21.1
10.100.21.1
What is the binary representation for the decimal number 173? 10100111 10110101 10100101 10101101
10101101
What is the binary representation of 0xCA? 11001010 10111010 11010101 11011010
11001010
What is the binary equivalent of the decimal number 232? 10011000 11110010 11101000 11000110
11101000
How many binary bits exist within an IPv6 address? 64 128 48 256 32
128
What is the decimal equivalent of the binary number 10010101? 192 149 168 157
149
What are the two sizes (minimum and expected maximum) of an Ethernet frame? (Choose two.) 1518 bytes 64 bytes 56 bytes 128 bytes 1024 bytes
1518 bytes 64 bytes
What is the dotted decimal representation of the IPv4 address 11001011.00000000.01110001.11010011? 192.0.2.199 203.0.113.211 209.165.201.223 198.51.100.201
203.0.113.211
Given the binary address of 11101100 00010001 00001100 00001010, which address does this represent in dotted decimal format? 236.17.12.10 234.17.10.9 234.16.12.10 236.17.12.6
236.17.12.10
How many bits are in an IPv4 address? 32 64 128 256
32
What is the decimal equivalent of the hex number 0x3F? 63 93 87 77
63
In which scenario would the use of a WISP be recommended? An internet café in a city A farm in a rural area without wired broadband access An apartment in a building with cable access to the internet Any home with multiple wireless devices
A farm in a rural are without wired broadband access
What is auto-MDIX? A feature that detects Ethernet cable type A type of cisco switch A feature to automatically determine speed and duplex An ethernet connector type
A feature that detects Ethernet cable type
Which device performs the function of determining the path that messages should take through internetworks? A web server A DSL modem A firewall A router
A router
What type of address is 01-00-5E-0A-00-02? An address that reaches one specific host An address that reaches every host in the network And address that reaches every host inside a local subnet And address that reaches specific group of hosts
An address that reaches a specific group of hosts
Which functionality is provided by DHCP? Automatic assignment of an IP address to each host Remote switch management End-To-End connectivity test Translation of IP addresses to domain names
Automatic assignment of an IP address to each host
How does BYOD change the way in which businesses implement networks? BYOD users are responsible for their own network security, thus reducing the need for organizational policies BYOD devices are more expensive than devices that are purchased by an organizing BYOD requires organizations to purchase laptops rather than desktops BYOD provides flexibility in where and how users can access the network resources
BYOD provides flexibility in where and how users can access the network resources
A large corporation has modified its network to allow users to access network resources from their personal laptops and smart phones. Which networking trend does this describe? Video conferencing Bring your own device Online collaboration Cloud computing
Bring your own device
What type of communication will send a message to all devices on a local area network? Multicast Allcast Broadcast Unicast
Broadcast
Which message delivery option is used when all devices need to receive the same message simultaneously? Unicast Broadcast Multicast Duplex
Broadcast
What method is used to manage contention-based access on a wireless network? Token passing CSMA/CD Priority ordering CSMA/CA
CSMA/CA
Which data link layer media access control method does Ethernet use with legacy Ethernet hubs? Token passing CSMA/CD Turn taking Determinism
CSMA/CD
What is a characteristic of UTP cabling? Woven copper braid or metallic foil Cladding Immunity to electrical hazards Cancellation
Cancellation
Which two Internet connection options do not require that physical cables be run to the building? (Choose two.) Dedicated leased line DSL Cellular Satellite Dialup
Cellular Satellite
Which layer of the OSI model is responsible for specifying the encapsulation method used for specific types of media? Application Physical Transport Data link
Data link
Which statement describes the half-duplex mode of data transmission? Data that is transmitted over the network flows in one direction at a time Data that is transmitted over the network flows in both direction at the same time Data that is transmitted over the network can only flow in one direction Data that is transmitted over the network flows in one direction to many different destinations simultaneously
Data that is transmitted over the network flows in one direction at a time
What process is used to receive transmitted data and convert it into a readable message? Decoding Encapsulation Flow control Access control
Decoding
Which logical address is used for delivery of data to a remote network? Source MAC address Source IP address Destination MAC address Destination IP address Destination port number
Destination IP address
Which two functions are provided to users by the context-sensitive help feature of the Cisco IOS CLI? (Choose two.) Displaying a list of all available commands within the current mode Determining which option, keyword, or argument is available for the entered command Allowing the user to complete the remainder of an abbreviated command with the TAB key Selecting the best command to accomplish a task Providing an error message when a wrong command is submitted
Displaying a list of all available commands within the current mode Determining which option, keyword, or argument is available for the entered command
What process is used to place one message inside another message for transfer from the source to the destination? Access contol Decoding Flow control Encapsulation
Encapsulation
Which term refers to a network that provides secure access to the corporate offices by suppliers, customers and collaborators? Internet Intranet Extendednet Extranet
Extranet
A college is building a new dormitory on its campus. Workers are digging in the ground to install a new water pipe for the dormitory. A worker accidentally damages a fiber optic cable that connects two of the existing dormitories to the campus data center. Although the cable has been cut, students in the dormitories only experience a very short interruption of network services. What characteristic of the network is shown here? Quality of Service Fault Tolerance Security Scalability Integrity
Fault Tolerance
What are two characteristics of a scalable network? (Choose two.) Offers limited number of applications Easily overloaded with increased traffic Is not as reliable as a small network Grows in size without impacting existing users Suitable for modular devices that allow for expansion
Grows in size without impacting existing users Suitable for modular devices that allow for expansion
A web client is sending a request for a webpage to a web server. From the perspective of the client, what is the correct order of the protocol stack that is used to prepare the request for transmission? HTTP, IP, TCP, Ethernet Ethernet, TCP, IP, HTTP Ethernet, IP, TCP, HTTP HTTP, TCP, IP, Ethernet
HTTP, TCP, IP, Ethernet
Which three acronyms/initialisms represent standards organizations? (Choose three.) OSI IANA MAC TCP/IP IEEE IETF
IANA IEEE IETF
Which two protocols function at the internet layer? (Choose two.) ICMP BOOTP PPP IP POP
ICMP IP
Which standards organization oversees development of wireless LAN standards? TIA ISO IEEE IANA
IEEE
Which two statements are correct about IPv4 and IPv6 addresses? (Choose two.) IPv6 Addresses are 64 bits in length IPv4 addresses are represented by hexadecimal numbers IPv4 addresses are 128 bits in length IPv6 addresses are 32 bits in length IPv4 addresses are 32 bits in length IPv6 addresses are represented by hexadecimal numbers
IPv4 addresses are 32 bits in length IPv6 addresses are represented by hexadecimal numbers
Which two engineering organizations define open standards and protocols that apply to the data link layer? (Choose two.) International Telecommunication Union ITU Institute of Electrical and Electronics Engineers IEEE Internet Society ISOC Electronic Industries Alliance EIA Internet Assigned Numbers Authority IANA
International Telecommunication Union ITU Institute of Electrical and Electronics Engineers IEEE
What are two services performed by the data link layer of the OSI model? (Choose two.)It fragments data packets into the MTU size It monitors the layer 2 communication by building a MAC address table It accepts layer 3 packets and encapsulates them into frames It determines the path to forward packets It provides media access control and performs error detection
It accepts layer 3 packets and encapsulates them into frames It provides media access control and performs error detection
Which statement is true about the running configuration file in a Cisco IOS device? It is stored in NVRAM It is automatically saved when the router reboots It affects the operation of the device immediately when modified It should be deleted using the erase running-config command
It affects the operation of the device immediately when modified
What are two benefits of using a layered network model? (Choose two.) It assists in protocol design It prevents technology in one layer from affecting other layers It speeds up packet delivery It prevents designers from creating their own model It ensures a device at one layer can function at the next higher layer
It assists in protocol design It prevents technology in one layer from affecting other layers
Which function or operation is performed by the LLC sublayer? It communicates with upper protocol layers It adds a header and trailer to a packet to form an OSI layer 2 PDU It performs data encapsulation It is responsible for media access control
It communicates with upper protocol layers
Which statement correctly describes frame encoding? It generates the electrical. optical, or wireless signals that represent the binary numbers of the frame It uses the characteristic of one waver to modify another wave It transmits data signals along with a clock signal which occurs at evenly spaced time durations It converts bits into a predefined code in order to provide a predictable pattern to help distinguish data bits from control bits
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 function of the shell in an OS? It interacts with the device hardware It interfaces between the users and the kernel It provides the intrusion protection services for the device It provides dedicated firewall services
It interfaces between the users and the kernel
What is one advantage of using fiber optic cabling rather than copper cabling? It is Usually cheaper than copper cabling It is easier to terminate and install than copper cabling It is able to be installed around sharp bends It is able to carry signals much farther than copper cabling
It is able to carry signals much farther than copper cabling
What is an ISP? IT is a protocol that establishes how computers within a local network communicate It is a standards body that develops cabling and wiring standards for networking It is a networking device that combines the functionality of several different networking devices in one It is an organization that enables individuals and businesses to connect to the internet
It is an organization that enables individual and businesses to connect to the internet
What is done to an IP packet before it is transmitted over the physical medium? It is segmented into smaller individual pieces It is encapsulated into a TCP segment It is tagged with information guaranteeing reliable delivery It is encapsulated in a Layer 2 frame
It is encapsulated in a Layer 2 frame
Which two functions or operations are performed by the MAC sublayer? (Choose two.) It is responsible for Media Access Control It handles communication between upper and lower layers It performs the function of NIC driver software It adds control information to network protocol layer data It adds a header and trailer to form an OSI layer 2 PDU
It is responsible for Media Access Control It adds a header and trailer to form and OSI layer 2 PDU
What is the Internet? It is a network based on ethernet technology It is a private network for an organization with LAN and WAN connections It provides connections through interconnected global networks It provides network access for mobile devices
It provides connection through interconnected global networks
Which two characteristics describe Ethernet technology? (Choose two.) It uses unique MAC addresses to ensure that data is sent to the appropriate destination It is supported by IEEE 802.3 standards It uses a ring topology It typically uses an average of 16 Mbps for data transfer rates It is supported by IEEE 802.5 standards
It uses unique MAC addresses to ensure that data is sent to the appropriate destination It is supported by IEEE 802.3 standards
What will a host on an Ethernet network do if it receives a frame with a unicast destination MAC address that does not match its own MAC address? It will forward the frame to the next host It will remove the frame from the media It will discard the frame It will strip off the data-link frame to check the destination IP address
It will discard the frame
What are the two sublayers of the OSI model data link layer? (Choose two.) MAC Transport Internet Network access Physical LLC
LLC MAC
What is true concerning physical and logical topologies? The logical Topology is always the same as the physical topology Physical topologies are concerned with how a network transfers frames Logical topologies refer to how a network transfers data between devices Physical topologies display the IP addressing scheme of each network
Logical topologies refer to how a network transfers data between devices
What attribute of a NIC would place it at the data link layer of the OSI model? TCP/IP protocol stack Attached ethernet cable RJ-45 port IP address MAC address
MAC address
What identifier is used at the data link layer to uniquely identify an Ethernet device? Sequence numbers IP address MAC address UDP port number TCP port number
MAC address
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? Ring Star Mesh Bus Hierarchical
Mesh
Which type of communication will send a message to a group of host destinations simultaneously? Broadcast Multicast Anycast Unicast
Multicast
Which memory location on a Cisco router or switch stores the startup configuration file? Flash NVRAM ROM RAM
NVRAM
An administrator has just changed the IP address of an interface on an IOS device. What else must be done in order to apply those changes to the device? Copy the information is the startup configuration file to the running configuration Reload the device and type yes when prompted to save the configuration Nothing must be done. Changes to the configuration on an IOS device take effect as soon as the command is typed correctly and the Enter key has been pressed Copy the running configuration to the startup configuration file
Nothing must be done. Changes to the configuration on an IOS device take effect as soon as the command is typed correctly and the Enter key has been pressed
Which two statements are true regarding the user EXEC mode? (Choose two.) Only some aspects of the router configuration can be viewed The device prompt for this mode ends with the ">" symbol All router commands are available Interfaces and routing protocols can be configured Global configuration mode can be accessed by entering the enable command
Only some aspects of the router configuration can be viewed The device prompt for this mode ends with the ">" symbol
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? Network layer Data link layer Physical layer Presentation layer
Physical Layer
Which type of access is secured on a Cisco router or switch with the enable secret command? Console line AUX port Privileged EXEC Virtual terminal
Privileged EXEC
What is the general term that is used to describe a piece of data at any layer of a networking model? Frame Protocol data unit Segment Packet
Protocol Data Unit
What is the purpose of protocols in data communications? Specifying the bandwidth of the channel or medium for each type of communication Providing the rules required for a specific type of communication to occur Dictating the content of the message sent during communication Specifying the device operating systems that will support the communication
Providing the rules required for a specific type of communication to occur
Which memory location on a Cisco router or switch will lose all content when the device is restarted? NVRAM ROM RAM flash
RAM
What type of cable is used to connect a workstation serial port to a Cisco router console port? Crossover Coaxial Rollover Straight-through
Rollover
What characteristic of a network enables it to quickly grow to support new users and applications without impacting the performance of the service being delivered to existing users? Scalability Accessibility Quality of Service Reliability
Scalability
During a routine inspection, a technician discovered that software that was installed on a computer was secretly collecting data about websites that were visited by users of the computer. Which type of threat is affecting this computer? Identity Theft DoS attack Zero-day attack Spyware
Spyware
What type of physical topology can be created by connecting all Ethernet cables to a central device? Ring Bus Star Mesh
Star
Which type of UTP cable is used to connect a PC to a switch port? Crossover Console Rollover Straight-through
Straight-through
Which network device has the primary function to send data to a specific destination based on the information found in the MAC address table? Router Hub Switch Modem
Switch
Which network device makes forwarding decisions based on the destination MAC address that is contained in the frame? Repeater Switch Hub Router
Switch
Which characteristic describes crosstalk? The distortion of the network signal from fluorescent lighting The distortion of the transmitted messages from signals carried in adjacent wires The loss of wireless signal over excessive distance from the access point The weakening of the network signal over long cable lengths
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 requires a dedicated connection because of performance requirements The end-user device area has a high concentration of RFI The end-user device needs mobility when connecting to the network The end-user device only has an Ethernet NIC
The end-user device needs mobility when connecting to the network
Which statement is true about MAC addresses? A NIC only needs a MAC address if connected to a WAN The first three bytes are used by the vendor assigned OUI The ISO is responsible for MAC addresses regulations MAC addresses are implemented by software
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 broadcast to all other deices on the same network The frame is sent to the default gateway The frame is returned to the originating network devices The frame is dropped
The frame is dropped
When a hostname is configured through the Cisco CLI, which three naming conventions are part of the guidelines? (Choose three.) The hostname should be written in all lower case characters The hostname should contain no spaces The hostname should end with a special character The hostname should begin with a letter The hostname should be fewer than 64 characters in length
The hostname should contain no spaces The hostname should begin with a letter The hostname should be fewer than 64 characters in length
What type of network must a home user access in order to do online shopping? A local are network The internet An extranet An intranet
The internet
What is indicated by the term throughput? The guaranteed data transfer rate offered by an ISP The measure of the bits transferred across the media over a given period of time The time it takes for a message to get from sender to receiver The measure of the usable data transferred across the media The capacity of a particular medium to carry data
The measure of the bits transferred across the media over a given period of time
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 LAN signal is occasionally affected by some type of interference. What is a possible cause of the signal distortion? The large number of trees that surrounds the office The number of wireless devices that are used in the wireless LAN The microwave oven The elevated location where the wireless LAN was installed
The microwave oven
What addressing information is recorded by a switch to build its MAC address table? The destination layer 2 address of outgoing frames The source layer 3 address of outgoing packets The destination layer 3 address of incoming packets The source layer 2 address of incoming frames
The source layer 2 address of incoming frames
Although CSMA/CD is still a feature of Ethernet, why is it no longer necessary? The use of full-duplex capable layer 2 switches The use of CSMA/CA The use of Gigabit Ethernet speeds The virtually unlimited availability of IPv6 addresses The development of half-duplex switch operation
The use of full-duplex capable layer 2 switches
Why are two strands of fiber used for a single fiber optic connection? They increase the speed at which the data can travel They prevent crosstalk from causing interferences on the connection They allow for full-duplex connectivity They two strands allow the data to travel for longer distances without degrading
They allow for full-duplex connectivity
What are two functions of end devices on a network? (Choose two.) They direct data over alternate paths in the even of link failures They filter the flow of data to enhance security They are the interface between humans and the communication network They provide the channel over which the network message travels They originate the data that flows through the network
They are the interface between humans and the communication network They originate the data that flows through the network
What statement describes a characteristic of MAC addresses? They are added as a part of a layer 3 PDU They have a 32-bit binary value They are only routable within the private network They must be globally unique
They must be globally unique
In computer communication, what is the purpose of message encoding? To break large messages into smaller frames To interpret information To convert information to the appropriate form for transmission To negotiate correct timing for successful communication
To convert information to the appropriate for transmission
Why would a technician enter the command copy startup-config running-config? To make a changed configuration the new startup configuration To copy an existing configuration into RAM To remove all configuration from the switch To save an active configuration to NVRAM
To copy an existing configuration into RAM
Which is a function of the Logical Link Control (LLC) sublayer? To define the media access processes that are performed by the hardware To identify which network layer protocol is being used To provide data link layer addressing To accept segments and package them into data units that are called packets
To identify which network layer protocol is being used
What is the purpose of the OSI physical layer? Exchanging frames between nodes over physical network media Controlling access to media Performing error detection on received frames Transmitting bits across the local media
Transmitting bits across the local media
Which layer of the OSI model defines services to segment and reassemble data for individual communications between end devices? Network Transport Presentation Session Application
Transport
Which procedure is used to reduce the effect of crosstalk in copper cables? Twisting opposing circuit wire pairs together Designing a cable infrastructure to avoid crosstalk interference Requiring proper grounding connections Avoiding sharp bends during installation Wrapping the bundle of wires with metallic shielding
Twisting opposing circuit wire pairs together
A router with a valid operating system contains a configuration file stored in NVRAM. The configuration file has an enable secret password but no console password. When the router boots up, which mode will display? User EXEC mode Privileged EXEC mode Global configuration mode Setup mode
User Exec mode
What is the default SVI on a Cisco switch? VLAN100 VLAN999 VLAN1 VLAN99
VLAN1
An employee wants to access the network of the organization remotely, in the safest possible way. What network feature would allow an employee to gain secure remote access to a company network IPS ACL BYOD VPN
VPN
Which IPv4 address format was created for ease of use by people and is expressed as 201.192.1.14? Binary Dotted decimal ASCII Hexadecimal
dotted decimal
What is the definition of bandwidth? The amount of data that can flow from one place to another in a given amount of time The speed at which bits travel on the network The speed of bits across the media over a giber period of time The measure of usable data transferred over a given period of time
the amount of data that can flow from one place to another in a given amount of time
