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Networking Fundamentals Flashcards
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Networking Fundamentals Flashcards
Networking Fundamentals Flashcards
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1
Question
What type of network media is appropriate for horizontal cabling structure?
Answer
Copper Cables
2
Question
Which network media is best for desktop PCs in an enterprise office?
Answer
Copper Cables
3
Question
What media is suitable for backbone cabling in an enterprise?
Answer
Fiber Optic
4
Question
Which media is ideal for long-haul networks?
Answer
Fiber Optic
5
Question
What network media supports guest access in a coffee shop?
Answer
Wireless
6
Question
Which media is appropriate for waiting rooms in a hospital?
Answer
Wireless
7
Question
What type of cabling is shown in a photograph of fiber optic cable and its connector?
Answer
fiber
8
Question
Which three factors influence differences in network throughput compared to bandwidth?
Answer
the amount of traffic that is currently crossing the network, the type of traffic that is crossing the network, the latency that is created by the number of network devices that the data is crossing
9
Question
What causes crosstalk within unshielded twisted-pair copper wire cable pairs?
Answer
the magnetic field around the adjacent pairs of wire
10
Question
What is a primary role of the Physical layer in transmitting data?
Answer
create the signals that represent the bits in each frame on to the media
11
Question
In addition to cable length, what two factors interfere with communication over UTP cables?
Answer
crosstalk, electromagnetic interference
12
Question
Which WAN topology provides high availability and connects some, but not all, remote sites?
Answer
partial mesh
13
Question
What are three ways media access control is used in networking?
Answer
Ethernet utilizes CSMA/CD., Media access control provides placement of data frames onto the media., Data link layer protocols define the rules for access to different media.
14
Question
What is contained in the trailer of a data-link frame?
Answer
error detection
15
Question
What is a characteristic of the LLC sublayer?
Answer
It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.
16
Question
Which statement is true about the CSMA/CD access method in Ethernet?
Answer
All network devices must listen before transmitting.
17
Question
Which media communication type does not require media arbitration in the data link layer?
Answer
full-duplex
18
Question
What type of communication rule describes CSMA/CD?
Answer
access method
19
Question
What three items are contained in an Ethernet header and trailer?
Answer
source MAC address, destination MAC address, error-checking information
20
Question
Which statement describes an extended star topology?
Answer
End devices connect to a central intermediate device, which in turn connects to other central intermediate devices.
21
Question
What method of memory buffering works best for switching from 1000BASE-T to 100Base-T?
Answer
shared memory buffering
22
Question
What is one advantage of cut-through switching over store-and-forward?
Answer
has a lower latency appropriate for high-performance computing applications
23
Question
What are two examples of the cut-through switching method?
Answer
fast-forward switching, fragment-free switching
24
Question
What is the auto-MDIX feature?
Answer
It enables a device to automatically configure an interface to use a straight-through or a crossover cable.
25
Question
In store-and-forward switching, what part of the Ethernet frame is used for error check?
Answer
CRC in the trailer
26
Question
In a network diagram with routers and PC, what is the destination MAC address leaving the web server to PC1?
Answer
00-60-2F-3A-07-BB
27
Question
What are two actions performed by a Cisco switch?
Answer
using the source MAC addresses of frames to build and maintain a MAC address table, utilizing the MAC address table to forward frames via the destination MAC address
28
Question
Which is a multicast MAC address?
Answer
01-00-5E-00-00-03
29
Question
Which switching method uses the CRC value in a frame?
Answer
store-and-forward
30
Question
When connecting two modern switches with straight-through cable, what three statements are correct?
Answer
The link between the switches will work at the fastest speed that is supported by both switches., The link between switches will work as full-duplex., The auto-MDIX feature will configure the interfaces eliminating the need for a crossover cable.