PECNS ww

 0    164 schede    pawelkabza
Scarica mp3 Stampa Gioca Testa il tuo livello
 
Domanda Risposta
A function of the TCP sequence number is: To associate a chronological number with each TCP segment, allowing the receiver to properly reorder the individual segments of data
inizia ad imparare
true
A function of the TCP sequence number is: To inform the sender of the next expected chronological sequence number of the TCP segment
inizia ad imparare
false
A function of the TCP sequence number is: To reassemble IP fragments
inizia ad imparare
false
A function of the TCP sequence number is: To increment the hop count on all TCP segments
inizia ad imparare
false
A server port of UDP or TCP 53 is typically associated with what service?: HTTP
inizia ad imparare
false
A server port of UDP or TCP 53 is typically associated with what service?: DNS
inizia ad imparare
true
A server port of UDP or TCP 53 is typically associated with what service?: FTP
inizia ad imparare
false
A server port of UDP or TCP 53 is typically associated with what service?: RPC
inizia ad imparare
false
A TCP flag of RESET indicates: An intention to open a new TCP connection
inizia ad imparare
false
A TCP flag of RESET indicates: An intention to gracefully close and acknowledge the termination of both sides of the connection
inizia ad imparare
false
A TCP flag of RESET indicates: An intention to abort a TCP connection
inizia ad imparare
true
A TCP flag of RESET indicates: An intention to close the connection after all in-transit data is received
inizia ad imparare
false
A testbed is a bed that can be tested to see if it is comfortable
inizia ad imparare
false
A testbed is a platform for conducting rigorous, transparent, and replicable testing of scientific theories, computational tools and new technologies
inizia ad imparare
true
A testbed is the Spirent Test Center
inizia ad imparare
false
A testbed is a dedicated server that runs components of PlanetLab services
inizia ad imparare
false
A value of 6 in the protocol field of the IP header represents: An embedded protocol of ICMP follows the IP header
inizia ad imparare
false
A value of 6 in the protocol field of the IP header represents: An embedded protocol of UDP follows the IP header
inizia ad imparare
false
A value of 6 in the protocol field of the IP header represents: An embedded protocol of TCP follows the IP header
inizia ad imparare
true
A value of 6 in the protocol field of the IP header represents: An embedded protocol of TCP precedes the IP header
inizia ad imparare
false
Application nodes: maintain the set of network interface (e.g. eth0, wlan0) in the network node
inizia ad imparare
false
Application nodes: are often modeled as compound modules containing separate modules for queues, classes MAC, and PHY protocols
inizia ad imparare
false
Application nodes: are represented by compound modules which are connected to the network layer protocol other network interfaces in the wired case
inizia ad imparare
false
Application nodes: model the user behavior as well as the application program (e.g. browser), and the application layer protocol (e.g. HTTP)
inizia ad imparare
true
[!] ARP protocol: maps a network layer protocol address to a data link layer hardware address
inizia ad imparare
true
[!] ARP protocol: is used to provide secure connections across the Internet
inizia ad imparare
false
[!] ARP protocol: is used to resolve IP address to the corresponding Ethernt address
inizia ad imparare
false
[!] ARP protocol: is used to automatically provide IP addresses to network computers
inizia ad imparare
false
CSMA: stands for Computer Shared Medium Access
inizia ad imparare
false
CSMA: stands for Carrier Sense Multiple Access
inizia ad imparare
true
CSMA: is a protocol in which a node uses a token which gives transmission privilege on shared medium
inizia ad imparare
false
CSMA: is a protocol which a node verifies the absence of other traffic before transmitting on the shared transmission medium
inizia ad imparare
true
[!] CSMA/CA: stands for Computer Shared Medium Access with Collision Avoidance
inizia ad imparare
false
[!] CSMA/CA: stands for Carrier Sense Multiple Access with Collision Avoidance
inizia ad imparare
true
[!] CSMA/CA: is used to improve the performance of the CSMA
inizia ad imparare
false
[!] CSMA/CA: is a protocol which a node verifies the absence of other traffic before transmitting on the shred transmission medium
inizia ad imparare
true
EtherAppClient: is a module implementing the CSMA protocol
inizia ad imparare
false
EtherAppClient: is a module implementing an Ethernet application that only receives packets
inizia ad imparare
false
EtherAppClient: is a traffic generator the periodically sends messages (Ethernet frames)
inizia ad imparare
true
EtherAppClient: accepts connections from EtherAppServer on a specified port
inizia ad imparare
false
[!] EtherAppServer: is a module implementing the CSMA protocol
inizia ad imparare
false
[!] EtherAppServer: is a module implementing an Ethernet application that only receives packets
inizia ad imparare
false
[!] EtherAppServer: generates frames containing EthernetAppResp chunks
inizia ad imparare
true
[!] EtherAppServer: accepts connections on a specified port
inizia ad imparare
true
[!] INET supports: nodes mobility
inizia ad imparare
true
[!] INET supports: simulation visualization
inizia ad imparare
true
[!] INET supports: external frameworks
inizia ad imparare
true
[!] INET supports: Javascript plugins
inizia ad imparare
false
Ipv4NetworkConfigurator: supports manual routes and automatic routes
inizia ad imparare
true
Ipv4NetworkConfigurator: supports manual and automatic link configurations e.g. bandwidth, delays
inizia ad imparare
true
Ipv4NetworkConfigurator: assigns IPv4 addresses and sets up static routing for an IPv4 network
inizia ad imparare
true
Ipv4NetworkConfigurator: supports both manual and automatic address assignment
inizia ad imparare
true
[!] Ipv4RoutingTable: supports manual routes and automatic routes
inizia ad imparare
true
[!] Ipv4RoutingTable: supports manual and automatic link configurations e.g. bandwidth, delays
inizia ad imparare
false
[!] Ipv4RoutingTable: stores a routing table
inizia ad imparare
true
[!] Ipv4RoutingTable: supports both manual and automatic routes assignment
inizia ad imparare
true
Parameters applied to the simulation may be submitted in: configuration file, e.g. *ini
inizia ad imparare
true
Parameters applied to the simulation may be submitted in: topology file e.g. *ned
inizia ad imparare
true
Parameters applied to the simulation may be submitted in: in the simulation code *. cpp
inizia ad imparare
false
Parameters applied to the simulation may be submitted in: in the other way
inizia ad imparare
false
PhysicalEnvironment: arranges nodes in a physical environment
inizia ad imparare
false
PhysicalEnvironment: measures temperature of a physical environment
inizia ad imparare
false
PhysicalEnvironment: models the effect of a physical environment on radio signal propagation
inizia ad imparare
true
PhysicalEnvironment: defines a set of physical objects
inizia ad imparare
true
Results of the simulation are saved as: Arrays, lists and scalars
inizia ad imparare
false
Results of the simulation are saved as: Vectors, scalars and animations
inizia ad imparare
false
Results of the simulation are saved as: Vectors and scalars
inizia ad imparare
true
Results of the simulation are saved as: Arrays, vectors and lists
inizia ad imparare
false
Round-trip time (RTT): is the measurement of the time taken by an object to travel a distance through a medium
inizia ad imparare
false
Round-trip time (RTT): is the length of time it takes for a signal to travel in one direction
inizia ad imparare
false
Round-trip time (RTT): specifies the latency for a bit of data to travel across the network from on communication endpoint to another
inizia ad imparare
false
Round-trip time (RTT): is the amount of time it takes for a signal to be sent plus the amount of time for acknowledgement of the signal having been received
inizia ad imparare
true
StandardHost node contains the most common Internet protocols such as: LTE
inizia ad imparare
false
StandardHost node contains the most common Internet protocols such as: TCP
inizia ad imparare
true
StandardHost node contains the most common Internet protocols such as: UDP
inizia ad imparare
true
StandardHost node contains the most common Internet protocols such as: BGP
inizia ad imparare
false
TCP typically begins a session with: The three-way handshake of client to server with SYN set, the server response of SYN/ACK, and the client acknowledgement of ACK
inizia ad imparare
true
TCP typically begins a session with: The three-way handshake of server to client with SYN set, the clientresponse of SYN/ACK, and the server acknowledgement of ACK
inizia ad imparare
false
TCP typically begins a session with: TCP is not connection oriented so no handshake is required
inizia ad imparare
false
TCP typically begins a session with: A handshake consisting of the client request to the server with SYN set and a server response of a SYN
inizia ad imparare
false
TcpBasicClientApp: accepts any number of incoming TCP connections
inizia ad imparare
false
TcpBasicClientApp: sends back the messages that arrive to it
inizia ad imparare
false
TcpBasicClientApp: is a client for a generic request-response style protocol over TCP
inizia ad imparare
true
TcpBasicClientApp: communicates with a server sessions
inizia ad imparare
true
TCPSinkAPP: listens on an TCP port, and sends back each received packet to its sender
inizia ad imparare
false
TCPSinkAPP: generates traffic for a TCP application
inizia ad imparare
false
TCPSinkAPP: accepts any number of incoming TCP connections, and discard whatever arrives on
inizia ad imparare
true
TCPSinkAPP: sinks TCP packets and leaves the others (e.g. TCP packets)
inizia ad imparare
false
[!] The DUT is a: device under test
inizia ad imparare
true
[!] The DUT is a: device UDP traffic
inizia ad imparare
false
[!] The DUT is a: driver urgent transfer
inizia ad imparare
false
[!] The DUT is a: Spirent Test Center interface
inizia ad imparare
false
The components of the testbed are: experimental subsystem
inizia ad imparare
true
The components of the testbed are: comfortable mattress
inizia ad imparare
false
The components of the testbed are: monitoring subsystem
inizia ad imparare
true
The components of the testbed are: wireless subsystem
inizia ad imparare
false
The following languages are used for description of a simulation: Protel
inizia ad imparare
false
The following languages are used for description of a simulation: VHDL
inizia ad imparare
false
The following languages are used for description of a simulation: Proto-C
inizia ad imparare
true
The following languages are used for description of a simulation: C/C++
inizia ad imparare
true
The ISO/OSI model consists of three layers.
inizia ad imparare
false
The ISO/OSI model consists of five layers.
inizia ad imparare
flase
The ISO/OSI model consists of seven layers.
inizia ad imparare
true
The ISO/OSI model consists of eight layers.
inizia ad imparare
false
The slice is a: set of allocated resources distributed across PlanetLab.
inizia ad imparare
true
The slice is a: set of allocated resources on a single PlanetLab node.
inizia ad imparare
false
The slice is a: physical location where PlanetLab nodes are located.
inizia ad imparare
false
The slice is a: dedicated server that runs components of PlanetLab services.
inizia ad imparare
false
The sliver is a: set of allocated resources distributed across PlanetLab.
inizia ad imparare
false
The sliver is a: slice (set of allocated resources) running on a specific node
inizia ad imparare
true
The sliver is a: set of allocated resources on a single PlanetLab node
inizia ad imparare
true
The sliver is a: physical location where PlanetLab nodes are located.
inizia ad imparare
false
The silver is a: dedicated server that runs components of PlanetLab services.
inizia ad imparare
false
[!] The Stream Block is a: “summary” definition, it can represent a single stream on a single port, or 1000s of stream across 100s ports
inizia ad imparare
true
[!] The Stream Block is a: Spirent chassis
inizia ad imparare
false
[!] The Stream Block is a: router
inizia ad imparare
false
[!] The Stream Block is a: single stream on s single port
inizia ad imparare
false
The TCP is a |connection-oriented| protocol
inizia ad imparare
true
The TCP is a |reliable| protocol
inizia ad imparare
true
The TCP is a |both a and b| protocol
inizia ad imparare
true
The TCP is a |encypted| protocol
inizia ad imparare
false
The TCP is a |plain text| protocol
inizia ad imparare
false
The TCP is a |none of the above| protocol
inizia ad imparare
false
The TCP/IP model consists of |three| layers
inizia ad imparare
false
The TCP/IP model consists of |four| layers
inizia ad imparare
true
The TCP/IP model consists of |five| layers
inizia ad imparare
false
The TCP/IP model consists of |seven| layers
inizia ad imparare
false
To run the Omnet++ executable, you need an: omnetpp. ini
inizia ad imparare
true
To run the Omnet++ executable, you need an: omnetpp. inf
inizia ad imparare
false
To run the Omnet++ executable, you need an: omnetpp. txt
inizia ad imparare
false
To run the Omnet++ executable, you need an: omnetpp. vec
inizia ad imparare
false
Using the Stream Block Editor of the Spirent Test Center we can define: the Ethernet frame
inizia ad imparare
false
Using the Stream Block Editor of the Spirent Test Center we can define: the UDP header
inizia ad imparare
true
Using the Stream Block Editor of the Spirent Test Center we can define: the IPv4 header: the gateway in the UDP header
inizia ad imparare
true
Using the Stream Block Editor of the Spirent Test Center we can define: the destination MAC address in UDP header
inizia ad imparare
true
Using the Stream Block Editor of the Spirent Test Center we can define
inizia ad imparare
Using the Stream Block Editor of the Spirent Test Center we can define
UDPSink: listens on an UDP port, and sends back each received packet to its sender
inizia ad imparare
false
UDPSink: generates traffic for a UDP application
inizia ad imparare
false
UDPSink: consumes and prints packets received from the UDP module
inizia ad imparare
true
UDPSink: sinks UDP packets and leaves the other (e.g. TCP packets)
inizia ad imparare
true
What is a typical response from a host that receives a UDP packet on a non-listening port?: A UDP reset flag set to the sender
inizia ad imparare
false
What is a typical response from a host that receives a UDP packet on a non-listening port?: A UDP FIN flag set to the sender
inizia ad imparare
false
What is a typical response from a host that receives a UDP packet on a non-listening port?: An ICMP port unreachable message to the sender
inizia ad imparare
true
What is a typical response from a host that receives a UDP packet on a non-listening port?: A UDP port unreachable message to the sender
inizia ad imparare
false
What is the function of a router?: It determines the entire route for an IP packet from source to destination host
inizia ad imparare
false
What is the function of a router?: It uses ARP to route the packet to the next hop
inizia ad imparare
false
What is the function of a router?: It uses DNS to route the packet to the next hop
inizia ad imparare
false
What is the function of a router?: It attempts to move the IP packet one hop closer to the destination
inizia ad imparare
true
What is the output of the Omnet++ simulation?: The simulation results are recorded into output scalar (. sca) file
inizia ad imparare
false
What is the output of the Omnet++ simulation?: The simulation results are recorded into output vector (. vec) file
inizia ad imparare
false
What is the output of the Omnet++ simulation?: The simulation results are recorded into output vector (. vec) and output scalar (. sca) files
inizia ad imparare
true
What is the output of the Omnet++ simulation?: none of the above
inizia ad imparare
false
[!] Which are predefined geographical (?) scales of network topologies?: world
inizia ad imparare
false
[!] Which are predefined geographical (?) scales of network topologies?: enterprise
inizia ad imparare
false
[!] Which are predefined geographical (?) scales of network topologies?: campus
inizia ad imparare
true
[!] Which are predefined geographical (?) scales of network topologies?: office
inizia ad imparare
true
Which of the following best characterizes TCP versus UDP (in most cases)?: TCP is less reliable and quicker
inizia ad imparare
false
Which of the following best characterizes TCP versus UDP (in most cases)?: TCP is slower, more reliable, and requires more overhead
inizia ad imparare
true
Which of the following best characterizes TCP versus UDP (in most cases)?: TCP is faster, more reliable, and more streamlined
inizia ad imparare
false
Which of the following best characterizes TCP versus UDP (in most cases)?: TCP is less reliable and connection-oriented
inizia ad imparare
false
Which topics were NOT covered by twelve pdf manuals available on the Platform?: TCP
inizia ad imparare
false
Which topics were NOT covered by twelve pdf manuals available on the Platform?: WiFi
inizia ad imparare
true
Which topics were NOT covered by twelve pdf manuals available on the Platform?: LTE
inizia ad imparare
true
Which topics were NOT covered by twelve pdf manuals available on the Platform?: Queuing disciplines
inizia ad imparare
false

Devi essere accedere per pubblicare un commento.