PECNS ww

 0    164 fiche    pawelkabza
Télécharger mP3 Imprimer jouer consultez
 
question réponse
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
commencer à apprendre
true
A function of the TCP sequence number is: To inform the sender of the next expected chronological sequence number of the TCP segment
commencer à apprendre
false
A function of the TCP sequence number is: To reassemble IP fragments
commencer à apprendre
false
A function of the TCP sequence number is: To increment the hop count on all TCP segments
commencer à apprendre
false
A server port of UDP or TCP 53 is typically associated with what service?: HTTP
commencer à apprendre
false
A server port of UDP or TCP 53 is typically associated with what service?: DNS
commencer à apprendre
true
A server port of UDP or TCP 53 is typically associated with what service?: FTP
commencer à apprendre
false
A server port of UDP or TCP 53 is typically associated with what service?: RPC
commencer à apprendre
false
A TCP flag of RESET indicates: An intention to open a new TCP connection
commencer à apprendre
false
A TCP flag of RESET indicates: An intention to gracefully close and acknowledge the termination of both sides of the connection
commencer à apprendre
false
A TCP flag of RESET indicates: An intention to abort a TCP connection
commencer à apprendre
true
A TCP flag of RESET indicates: An intention to close the connection after all in-transit data is received
commencer à apprendre
false
A testbed is a bed that can be tested to see if it is comfortable
commencer à apprendre
false
A testbed is a platform for conducting rigorous, transparent, and replicable testing of scientific theories, computational tools and new technologies
commencer à apprendre
true
A testbed is the Spirent Test Center
commencer à apprendre
false
A testbed is a dedicated server that runs components of PlanetLab services
commencer à apprendre
false
A value of 6 in the protocol field of the IP header represents: An embedded protocol of ICMP follows the IP header
commencer à apprendre
false
A value of 6 in the protocol field of the IP header represents: An embedded protocol of UDP follows the IP header
commencer à apprendre
false
A value of 6 in the protocol field of the IP header represents: An embedded protocol of TCP follows the IP header
commencer à apprendre
true
A value of 6 in the protocol field of the IP header represents: An embedded protocol of TCP precedes the IP header
commencer à apprendre
false
Application nodes: maintain the set of network interface (e.g. eth0, wlan0) in the network node
commencer à apprendre
false
Application nodes: are often modeled as compound modules containing separate modules for queues, classes MAC, and PHY protocols
commencer à apprendre
false
Application nodes: are represented by compound modules which are connected to the network layer protocol other network interfaces in the wired case
commencer à apprendre
false
Application nodes: model the user behavior as well as the application program (e.g. browser), and the application layer protocol (e.g. HTTP)
commencer à apprendre
true
[!] ARP protocol: maps a network layer protocol address to a data link layer hardware address
commencer à apprendre
true
[!] ARP protocol: is used to provide secure connections across the Internet
commencer à apprendre
false
[!] ARP protocol: is used to resolve IP address to the corresponding Ethernt address
commencer à apprendre
false
[!] ARP protocol: is used to automatically provide IP addresses to network computers
commencer à apprendre
false
CSMA: stands for Computer Shared Medium Access
commencer à apprendre
false
CSMA: stands for Carrier Sense Multiple Access
commencer à apprendre
true
CSMA: is a protocol in which a node uses a token which gives transmission privilege on shared medium
commencer à apprendre
false
CSMA: is a protocol which a node verifies the absence of other traffic before transmitting on the shared transmission medium
commencer à apprendre
true
[!] CSMA/CA: stands for Computer Shared Medium Access with Collision Avoidance
commencer à apprendre
false
[!] CSMA/CA: stands for Carrier Sense Multiple Access with Collision Avoidance
commencer à apprendre
true
[!] CSMA/CA: is used to improve the performance of the CSMA
commencer à apprendre
false
[!] CSMA/CA: is a protocol which a node verifies the absence of other traffic before transmitting on the shred transmission medium
commencer à apprendre
true
EtherAppClient: is a module implementing the CSMA protocol
commencer à apprendre
false
EtherAppClient: is a module implementing an Ethernet application that only receives packets
commencer à apprendre
false
EtherAppClient: is a traffic generator the periodically sends messages (Ethernet frames)
commencer à apprendre
true
EtherAppClient: accepts connections from EtherAppServer on a specified port
commencer à apprendre
false
[!] EtherAppServer: is a module implementing the CSMA protocol
commencer à apprendre
false
[!] EtherAppServer: is a module implementing an Ethernet application that only receives packets
commencer à apprendre
false
[!] EtherAppServer: generates frames containing EthernetAppResp chunks
commencer à apprendre
true
[!] EtherAppServer: accepts connections on a specified port
commencer à apprendre
true
[!] INET supports: nodes mobility
commencer à apprendre
true
[!] INET supports: simulation visualization
commencer à apprendre
true
[!] INET supports: external frameworks
commencer à apprendre
true
[!] INET supports: Javascript plugins
commencer à apprendre
false
Ipv4NetworkConfigurator: supports manual routes and automatic routes
commencer à apprendre
true
Ipv4NetworkConfigurator: supports manual and automatic link configurations e.g. bandwidth, delays
commencer à apprendre
true
Ipv4NetworkConfigurator: assigns IPv4 addresses and sets up static routing for an IPv4 network
commencer à apprendre
true
Ipv4NetworkConfigurator: supports both manual and automatic address assignment
commencer à apprendre
true
[!] Ipv4RoutingTable: supports manual routes and automatic routes
commencer à apprendre
true
[!] Ipv4RoutingTable: supports manual and automatic link configurations e.g. bandwidth, delays
commencer à apprendre
false
[!] Ipv4RoutingTable: stores a routing table
commencer à apprendre
true
[!] Ipv4RoutingTable: supports both manual and automatic routes assignment
commencer à apprendre
true
Parameters applied to the simulation may be submitted in: configuration file, e.g. *ini
commencer à apprendre
true
Parameters applied to the simulation may be submitted in: topology file e.g. *ned
commencer à apprendre
true
Parameters applied to the simulation may be submitted in: in the simulation code *. cpp
commencer à apprendre
false
Parameters applied to the simulation may be submitted in: in the other way
commencer à apprendre
false
PhysicalEnvironment: arranges nodes in a physical environment
commencer à apprendre
false
PhysicalEnvironment: measures temperature of a physical environment
commencer à apprendre
false
PhysicalEnvironment: models the effect of a physical environment on radio signal propagation
commencer à apprendre
true
PhysicalEnvironment: defines a set of physical objects
commencer à apprendre
true
Results of the simulation are saved as: Arrays, lists and scalars
commencer à apprendre
false
Results of the simulation are saved as: Vectors, scalars and animations
commencer à apprendre
false
Results of the simulation are saved as: Vectors and scalars
commencer à apprendre
true
Results of the simulation are saved as: Arrays, vectors and lists
commencer à apprendre
false
Round-trip time (RTT): is the measurement of the time taken by an object to travel a distance through a medium
commencer à apprendre
false
Round-trip time (RTT): is the length of time it takes for a signal to travel in one direction
commencer à apprendre
false
Round-trip time (RTT): specifies the latency for a bit of data to travel across the network from on communication endpoint to another
commencer à apprendre
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
commencer à apprendre
true
StandardHost node contains the most common Internet protocols such as: LTE
commencer à apprendre
false
StandardHost node contains the most common Internet protocols such as: TCP
commencer à apprendre
true
StandardHost node contains the most common Internet protocols such as: UDP
commencer à apprendre
true
StandardHost node contains the most common Internet protocols such as: BGP
commencer à apprendre
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
commencer à apprendre
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
commencer à apprendre
false
TCP typically begins a session with: TCP is not connection oriented so no handshake is required
commencer à apprendre
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
commencer à apprendre
false
TcpBasicClientApp: accepts any number of incoming TCP connections
commencer à apprendre
false
TcpBasicClientApp: sends back the messages that arrive to it
commencer à apprendre
false
TcpBasicClientApp: is a client for a generic request-response style protocol over TCP
commencer à apprendre
true
TcpBasicClientApp: communicates with a server sessions
commencer à apprendre
true
TCPSinkAPP: listens on an TCP port, and sends back each received packet to its sender
commencer à apprendre
false
TCPSinkAPP: generates traffic for a TCP application
commencer à apprendre
false
TCPSinkAPP: accepts any number of incoming TCP connections, and discard whatever arrives on
commencer à apprendre
true
TCPSinkAPP: sinks TCP packets and leaves the others (e.g. TCP packets)
commencer à apprendre
false
[!] The DUT is a: device under test
commencer à apprendre
true
[!] The DUT is a: device UDP traffic
commencer à apprendre
false
[!] The DUT is a: driver urgent transfer
commencer à apprendre
false
[!] The DUT is a: Spirent Test Center interface
commencer à apprendre
false
The components of the testbed are: experimental subsystem
commencer à apprendre
true
The components of the testbed are: comfortable mattress
commencer à apprendre
false
The components of the testbed are: monitoring subsystem
commencer à apprendre
true
The components of the testbed are: wireless subsystem
commencer à apprendre
false
The following languages are used for description of a simulation: Protel
commencer à apprendre
false
The following languages are used for description of a simulation: VHDL
commencer à apprendre
false
The following languages are used for description of a simulation: Proto-C
commencer à apprendre
true
The following languages are used for description of a simulation: C/C++
commencer à apprendre
true
The ISO/OSI model consists of three layers.
commencer à apprendre
false
The ISO/OSI model consists of five layers.
commencer à apprendre
flase
The ISO/OSI model consists of seven layers.
commencer à apprendre
true
The ISO/OSI model consists of eight layers.
commencer à apprendre
false
The slice is a: set of allocated resources distributed across PlanetLab.
commencer à apprendre
true
The slice is a: set of allocated resources on a single PlanetLab node.
commencer à apprendre
false
The slice is a: physical location where PlanetLab nodes are located.
commencer à apprendre
false
The slice is a: dedicated server that runs components of PlanetLab services.
commencer à apprendre
false
The sliver is a: set of allocated resources distributed across PlanetLab.
commencer à apprendre
false
The sliver is a: slice (set of allocated resources) running on a specific node
commencer à apprendre
true
The sliver is a: set of allocated resources on a single PlanetLab node
commencer à apprendre
true
The sliver is a: physical location where PlanetLab nodes are located.
commencer à apprendre
false
The silver is a: dedicated server that runs components of PlanetLab services.
commencer à apprendre
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
commencer à apprendre
true
[!] The Stream Block is a: Spirent chassis
commencer à apprendre
false
[!] The Stream Block is a: router
commencer à apprendre
false
[!] The Stream Block is a: single stream on s single port
commencer à apprendre
false
The TCP is a |connection-oriented| protocol
commencer à apprendre
true
The TCP is a |reliable| protocol
commencer à apprendre
true
The TCP is a |both a and b| protocol
commencer à apprendre
true
The TCP is a |encypted| protocol
commencer à apprendre
false
The TCP is a |plain text| protocol
commencer à apprendre
false
The TCP is a |none of the above| protocol
commencer à apprendre
false
The TCP/IP model consists of |three| layers
commencer à apprendre
false
The TCP/IP model consists of |four| layers
commencer à apprendre
true
The TCP/IP model consists of |five| layers
commencer à apprendre
false
The TCP/IP model consists of |seven| layers
commencer à apprendre
false
To run the Omnet++ executable, you need an: omnetpp. ini
commencer à apprendre
true
To run the Omnet++ executable, you need an: omnetpp. inf
commencer à apprendre
false
To run the Omnet++ executable, you need an: omnetpp. txt
commencer à apprendre
false
To run the Omnet++ executable, you need an: omnetpp. vec
commencer à apprendre
false
Using the Stream Block Editor of the Spirent Test Center we can define: the Ethernet frame
commencer à apprendre
false
Using the Stream Block Editor of the Spirent Test Center we can define: the UDP header
commencer à apprendre
true
Using the Stream Block Editor of the Spirent Test Center we can define: the IPv4 header: the gateway in the UDP header
commencer à apprendre
true
Using the Stream Block Editor of the Spirent Test Center we can define: the destination MAC address in UDP header
commencer à apprendre
true
Using the Stream Block Editor of the Spirent Test Center we can define
commencer à apprendre
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
commencer à apprendre
false
UDPSink: generates traffic for a UDP application
commencer à apprendre
false
UDPSink: consumes and prints packets received from the UDP module
commencer à apprendre
true
UDPSink: sinks UDP packets and leaves the other (e.g. TCP packets)
commencer à apprendre
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
commencer à apprendre
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
commencer à apprendre
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
commencer à apprendre
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
commencer à apprendre
false
What is the function of a router?: It determines the entire route for an IP packet from source to destination host
commencer à apprendre
false
What is the function of a router?: It uses ARP to route the packet to the next hop
commencer à apprendre
false
What is the function of a router?: It uses DNS to route the packet to the next hop
commencer à apprendre
false
What is the function of a router?: It attempts to move the IP packet one hop closer to the destination
commencer à apprendre
true
What is the output of the Omnet++ simulation?: The simulation results are recorded into output scalar (. sca) file
commencer à apprendre
false
What is the output of the Omnet++ simulation?: The simulation results are recorded into output vector (. vec) file
commencer à apprendre
false
What is the output of the Omnet++ simulation?: The simulation results are recorded into output vector (. vec) and output scalar (. sca) files
commencer à apprendre
true
What is the output of the Omnet++ simulation?: none of the above
commencer à apprendre
false
[!] Which are predefined geographical (?) scales of network topologies?: world
commencer à apprendre
false
[!] Which are predefined geographical (?) scales of network topologies?: enterprise
commencer à apprendre
false
[!] Which are predefined geographical (?) scales of network topologies?: campus
commencer à apprendre
true
[!] Which are predefined geographical (?) scales of network topologies?: office
commencer à apprendre
true
Which of the following best characterizes TCP versus UDP (in most cases)?: TCP is less reliable and quicker
commencer à apprendre
false
Which of the following best characterizes TCP versus UDP (in most cases)?: TCP is slower, more reliable, and requires more overhead
commencer à apprendre
true
Which of the following best characterizes TCP versus UDP (in most cases)?: TCP is faster, more reliable, and more streamlined
commencer à apprendre
false
Which of the following best characterizes TCP versus UDP (in most cases)?: TCP is less reliable and connection-oriented
commencer à apprendre
false
Which topics were NOT covered by twelve pdf manuals available on the Platform?: TCP
commencer à apprendre
false
Which topics were NOT covered by twelve pdf manuals available on the Platform?: WiFi
commencer à apprendre
true
Which topics were NOT covered by twelve pdf manuals available on the Platform?: LTE
commencer à apprendre
true
Which topics were NOT covered by twelve pdf manuals available on the Platform?: Queuing disciplines
commencer à apprendre
false

Vous devez vous connecter pour poster un commentaire.