Lesson 7 Flashcards
Which network topology uses a central hub or controller?
- Bus
- Ring
- Mesh
- Star
- Point-to-point
star
Consider a number of computers are in a network, and one computer crashes. In which of the following network topologies will the entire network also go down?
- Bus
- Ring
- Mesh
- Tree
- Star
ring
Which of the following is an example of network topology?
- Circle
- Nova
- Bus
- Branched
- Train
bus
The tree network topology is a special type of _____ topology.
- bus
- mesh
- star
- star bus hybrid
- ring
star bus hybrid
Which network topology would be used to directly connect every computer in an office to every other computer in the office, using a one-to-one cabling method?
- Tree
- Ring
- Bus
- Mesh
- Star
mesh
In a _____ topology network, all the devices are connected back to a central hub or switch.
- star
- mesh
- logical
- bus
star
Ethernet is an example of which kind of signal topology?
- shared media access
- token-based access
- switch based
- wireless
shared media access
The _____ topology of a network describes how devices are connected via actual cabling, wireless connectivity, etc.
- electrical
- logical
- physical
- diagram
physical
A wireless network for Internet access in a large building is typically connected in a _____ topology.
- logical
- ring
- mesh
- physical
mesh
The _____ of a network describes how the connections appear to the end user or how signals are passed across the network.
- logical topology
- protocol suite
- signal pattern
- physical topology
logical topology
In star-wired ring hybrid topology, a failure in one of the nodes of the main ring topology can lead to a breakdown of the entire hybrid network. What can be done to ensure the network does not fail in such a case?
- Adding more nodes to the ring topology
- Making the basic star topology to have additional nodes
- Adding additional star topologies onto the ring for further capacity
- Making the ring topology to be bidirectional
Making the ring topology to be bidirectional
What is a star-wired ring hybrid topology?
- It’s structured in different levels as a hierarchical tree
- It’s set of star topologies are connected by a ring topology as the adjoining topology
- It’s made up of a set of star topologies interconnected by a central bus topology
- It’s a four quadrant ring topology that’s interconnected with a hierarchical ring topology
It’s set of star topologies are connected by a ring topology as the adjoining topology
What is a single point of failure in a hybrid network topology?
- It is a situation where the interconnecting channel of a hybrid network topology fails
- It is a component of a hybrid network topology which causes a total network failure.
- It is a basic topology that has failed
- It is a situation where every basic topology of the Hybrid topology fails at the same time leading to packet loss
It is a basic topology that has failed
How are the inherent weaknesses of star, ring, and bus topologies addressed in a hybrid topology?
- The weaknesses cannot be overcome and must be addressed through coding processes
- When a combination of two or more of the basic topologies is made into a hybrid network topology, the weaknesses of a given topology is addressed by another
- When a combination of two or more basic topologies is made into a hybrid network topology, the weakness simply cease to exist
- There are no inherent weaknesses of basic topologies like star, ring, and bus topologies since they’ve already been addressed
When a combination of two or more of the basic topologies is made into a hybrid network topology, the weaknesses of a given topology is addressed by another
Which of the following is NOT a major reason why we should consider implementing a hybrid network topology as opposed to a basic topology?
- To accommodate future network growth
- To address the challenges of a specific network topology
- To conform to standard ISO requirements
- To isolate specific networks in the hybrid network
To conform to standard ISO requirements
Four types of backbone networks are _____.
- Serial, Distributed, Collapsed and Parallel networks
- Distributed, Collage, Series and Parallel networks
- Serial, Collapsed, Distributed and Paramount networks
- Series, Collapsed, Distributed and Parallel networks
Serial, Distributed, Collapsed and Parallel networks
One of the main disadvantages of the collapsed backbone is the _____.
- failure of duplicate connections
- susceptibility of complete system failure if the sub network fails
- system easily collapses under data transmission congestion
- susceptibility to complete system failure if the backbone router fails
susceptibility to complete system failure if the backbone router fails
Parallel backbone networks differ from collapsed backbone networks in that parallel backbone components are implemented with _____.
- duplicate concurrent switches to the high level backbone routers
- duplicate concurrent connections to the high level backbone routers
- duplicate concurrent connections to the low level backbone routers
- single concurrent switches to the high level backbone routers
duplicate concurrent connections to the high level backbone routers
A _____ network cannot be applied at enterprise level due to its high susceptibility to faults.
- Serial backbone
- Distributed backbone
- Parallel backbone
- Collapse backbone
Serial backbone
What is a backbone network?
- the parallel backup network incorporated into enterprise designs
- a low capacity connectivity infrastructure that forms the backup link to the different sub networks connected to it
- the infrastructure designed as a backup to the main network infrastructure
- a high capacity connectivity infrastructure that forms the main link to the different sub networks connected to it
a high capacity connectivity infrastructure that forms the main link to the different sub networks connected to it
What is network switching?
- The process of channeling data messages or data packets received from any number of input ports to another designated port that will transmit the data to its desired destination
- The process of labeling network hops from any number of input ports to another designated port
- A switching device that controls the volume of network traffic in a system
- The process of channeling network routers received from any number of input ports to another designated port that will transmit the router to its desired destination
The process of channeling data messages or data packets received from any number of input ports to another designated port that will transmit the data to its desired destination
The label in multi-protocol label switching contains _____.
- complete routing table information
- the ingress and exit router information
- the routers ingress and egress routing information
- information on the predefined path for the packets to reach their destination
information on the predefined path for the packets to reach their destination
In MPLS switching, the routing decision is made _____.
- by the exit routing device and forms the predefined path for ingress
- when the path is set up across the network
- at each network hop
- by the first routing device and forms the predefined path for subsequent routers
by the first routing device and forms the predefined path for subsequent routers
One characteristic of MPLS switching is that it _____.
- prevents network congestion
- prevent multiple network hops
- is very inefficient
- has little control on network traffic
prevents network congestion
The difference between circuit switching and packet switching is _____.
- with circuit switching the whole message is transmitted as one using a dedicated path, while with packet switching the message is broken down into small components called packets
- circuit switching is more vulnerable to network congestion than packet switching
- with circuit switching the message components takes independent paths to their final destination, while with packet switching the message takes one path to the final destination
- circuit switching uses destination labels, while packet switching uses routing labels
with circuit switching the whole message is transmitted as one using a dedicated path, while with packet switching the message is broken down into small components called packets
The Frame Check Sequence (FCS) within an Ethernet frame serves to _____.
- Detect corrupted data
- Identify the transmitting device
- Meet the VoIP needs over the channel
- Detect data collision
Detect corrupted data
What Ethernet Standard Specification is suitable for a network requiring 100 Mbps speed and 2000 max cable distance?
- 10 GBase - LX4
- 100 Base - TX
- 10 GBase - SW
- 100 Base - FX
100 Base - FX
Padding data is required within an Ethernet frame to _____.
- fulfill minimum field length requirement
- initiate a transmission queue
- hold the Pad Mac Address
- synchronize frame transmission
fulfill minimum field length requirement
Ethernet usually permits each node in the network to transmit data packets at any time which can cause _____.
- Error correction
- Multiple Access
- Data collision
- Data re-transmission
Data collision
Ethernet is the _____.
- LAN technology that dictates geographical specifications of networks worldwide
- Unit of data which is carried by an Ethernet Link by the Network Access layer
- LAN technology that dictates the technical specifications of hardware for connectivity
- Protocol which which waits for the channel to be idle then transmits data
LAN technology that dictates the technical specifications of hardware for connectivity
