Chapter 4 Quiz Practice

Refer to the exhibit. What is the maximum possible throughput between the PC and the server? 100 Mb/s 10 Mb/s 1000 Mb/s 128 kb/s

128 kb/s Refer to curriculum topic: 4.1.3The maximum throughput between any two nodes on a network is determined by the slowest link between those nodes.

What method is used to manage contention-based access on a wireless network? token passing CSMA/CA priority ordering CSMA/CD

CSMA/CA Refer to curriculum topic: 4.2.4Carrier sense multiple access with collision avoidance (CSMA/CA) is used with wireless networking technology to mediate media contention. Carrier sense multiple access with collision detection (CSMA/CD) is used with wired Ethernet technology to mediate media contention. Priority ordering and token passing are not used (or not a method) for media access control.

What is a characteristic of a WAN hub-and-spoke topology? It requires that every site be interconnected to each other through point-to-point links. All sites require a hub device that connects to a router. It requires that some of the branch sites be interconnected through point-to-point links. The branch sites are connected to a central site through point-to-point links.​

The branch sites are connected to a central site through point-to-point links.​ Refer to curriculum topic: 4.4.2A hub-and-spoke topology is a WAN version of the star topology in which a central site interconnects branch sites using point-to-point links. A mesh topology requires that every end system be interconnected to every other system using point-to-point links. A partial mesh is a variation of this topology, where some but not all end devices are interconnected. There is no topology where all the sites have to have hub devices that are connected to a router.

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 only has an Ethernet NIC. The end-user device requires a dedicated connection because of performance requirements. The end-user device needs mobility when connecting to the network. The end-user device area has a high concentration of RFI.

The end-user device needs mobility when connecting to the network. Refer to curriculum topic: 4.1.1When the end-user devices need mobility to connect to the network, wireless is recommended. If an end-user device only has an Ethernet NIC, the user will only be able to use Ethernet cabling. If RFI is an issue, wireless is not recommended. An end-user device that requires a dedicated connection for performance would perform better with a dedicated Ethernet cable.

Which statement describes a characteristic of the frame header fields of the data link layer? They all include the flow control and logical connection fields. Ethernet frame header fields contain Layer 3 source and destination addresses. They vary depending on protocols. They include information on user applications.

They vary depending on protocols. Refer to curriculum topic: 4.4.4All data link layer protocols encapsulate the Layer 3 PDU within the data field of the frame. However, the structure of the frame and the fields that are contained in the header vary according to the protocol. Different data link layer protocols may use different fields, like priority/quality of service, logical connection control, physical link control, flow control, and congestion control.

A network team is comparing topologies for connecting on a shared media. Which physical topology is an example of a hybrid topology for a LAN? extended star partial mesh ring bus

extended star Refer to curriculum topic: 4.4.3An extended star topology is an example of a hybrid topology as additional switches are interconnected with other star topologies. A partial mesh topology is a common hybrid WAN topology. The bus and ring are not hybrid topology types.

Which method of data transfer allows information to be sent and received at the same time? simplex multiplex half duplex full duplex

full duplex Refer to curriculum topic: 4.4.3

What type of cable is used to connect a workstation serial port to a Cisco router console port? crossover straight-through coaxial rollover

rollover Refer to curriculum topic: 4.2.2UTP cable wire pairs can be terminated in different configurations for use in different applications. To use a UTP cable for consoling into a Cisco router from a PC serial port, it must be terminated as a rollover or console cable.

Which is a function of the Logical Link Control (LLC) sublayer? to identify which network layer protocol is being used to provide data link layer addressing to define the media access processes that are performed by the hardware to accept segments and package them into data units that are called packets

to identify which network layer protocol is being used Refer to curriculum topic: 4.3.1Defining the media access processes that are performed by the hardware and providing data link layer addressing are functions of the MAC sublayer. The data link layer accepts Layer 3 packets and packages them into data units that are called frames.

What is the purpose of the OSI physical layer? controlling access to media performing error detection on received frames exchanging frames between nodes over physical network media transmitting bits across the local media

transmitting bits across the local media Refer to curriculum topic: 4.1.2The physical layer is responsible for transmitting the actual signals across the physical media as bits. Exchanging frames, controlling media access, and performing error detection are all functions of the data link layer.