Final exam 1ste helft Flashcards
(60 cards)
What is a characteristic of a fault tolerant network?
a network that protects confidential information from unauthorized access a network that can expand quickly to support new users and applications without impacting the performance of the service delivered to existing users a network that supports a mechanism for managing congestion and ensuring reliable delivery of content to all users a network that recovers quickly when a failure occurs and depends on redundancy to limit the impact of a failure
a network that recovers quickly when a failure occurs and depends on redundancy to limit the impact of a failure
Three bank employees are using the corporate network. The first employee uses a web browser to view a company web page in order to read some announcements. The second employee accesses the corporate database to perform some financial transactions. The third employee participates in an important live audio conference with other corporate managers in branch offices. If QoS is implemented on this network, what will be the priorities from highest to lowest of the different data types?
financial transactions, audio conference, web page audio conference, financial transactions, web page audio conference, web page, financial transactions financial transactions, web page, audio conference
audio conference, financial transactions, web page*
What is a benefit of using cloud computing in networking?
End users have the freedom to use personal tools to access information and communicate across a business network. Network capabilities are extended without requiring investment in new infrastructure, personnel, or software. Technology is integrated into every-day appliances allowing them to interconnect with other devices, making them more ‘smart’ or automated. Home networking uses existing electrical wiring to connect devices to the network wherever there is an electrical outlet, saving the cost of installing data cables.
Network capabilities are extended without requiring investment in new infrastructure, personnel, or software.*
What is the function of the shell in an OS?
It interacts with the device hardware. It interfaces between the users and the kernel. It provides dedicated firewall services. It provides the intrusion protection services for the device.
It interfaces between the users and the kernel.*
Which connection provides a secure CLI session with encryption to a Cisco switch?
a console connection an AUX connection a Telnet connection an SSH connection
an SSH connection
A network technician is attempting to configure an interface by entering the following command: SanJose(config)# ip address 192.168.2.1 255.255.255.0. The command is rejected by the device. What is the reason for this?
The command is being entered from the wrong mode of operation. The command syntax is wrong. The subnet mask information is incorrect. The interface is shutdown and must be enabled before the switch will accept the IP address.
The command is being entered from the wrong mode of operation.*
An administrator uses the Ctrl-Shift-6 key combination on a switch after issuing the ping command. What is the purpose of using these keystrokes?
to restart the ping process to interrupt the ping process to exit to a different configuration mode to allow the user to complete the command
to interrupt the ping process*
On which switch interface would an administrator configure an IP address so that the switch can be managed remotely?
FastEthernet0/1 VLAN 1 vty 0 console 0
VLAN 1
What protocol is responsible for controlling the size of segments and the rate at which segments are exchanged between a web client and a web server?
TCP IP HTTP Ethernet
TCP
What is an advantage to using a protocol that is defined by an open standard?
A company can monopolize the market. The protocol can only be run on equipment from a specific vendor. An open standard protocol is not controlled or regulated by standards organizations. It encourages competition and promotes choices.
It encourages competition and promotes choices.
What are two benefits of using a layered network model? (Choose two.)
It assists in protocol design. It speeds up packet delivery. It prevents designers from creating their own model. It prevents technology in one layer from affecting other layers. It ensures a device at one layer can function at the next higher layer.
It assists in protocol design.
It prevents technology in one layer from affecting other layers.
Which two OSI model layers have the same functionality as two layers of the TCP/IP model? (Choose two.)
data link
network
physical
session
transport
network
transport
Which name is assigned to the transport layer PDU?
bits
data
frame
packet
segment
segment
A network engineer is measuring the transfer of bits across the company backbone for a mission critical database application. The engineer notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)
the amount of traffic that is currently crossing the network the sophistication of the encapsulation method applied to the data 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 the bandwidth of the WAN connection to the Internet the reliability of the gigabit Ethernet infrastructure of the backbone
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
A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized?
presentation layer network layer physical layer data link layer
physical layer
Which type of UTP cable is used to connect a PC to a switch port?
console rollover crossover straight-through
straight-through
What is a characteristic of UTP cabling?
cancellation cladding immunity to electrical hazards woven copper braid or metallic foil
cancellation
What are two characteristics of fiber-optic cable? (Choose two.)
It is not affected by EMI or RFI. Each pair of cables is wrapped in metallic foil. It combines the technique of cancellation, shielding, and twisting to protect data. It typically contains 4 pairs of fiber-optic wires. It is more expensive than UTP cabling is.
It is not affected by EMI or RFI.
It is more expensive than UTP cabling is.
What is a characteristic of the LLC sublayer?
It provides the logical addressing required that identifies the device. It provides delimitation of data according to the physical signaling requirements of the medium. It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media. It defines software processes that provide services to the physical layer.
It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.
A network team is comparing physical WAN topologies for connecting remote sites to a headquarters building. Which topology provides high availability and connects some, but not all, remote sites?
mesh partial mesh hub and spoke point-to-point
partial mesh
What method is used to manage contention-based access on a wireless network?
CSMA/CD priority ordering CSMA/CA token passing
CSMA/CA
What are the three primary functions provided by Layer 2 data encapsulation? (Choose three.)
error correction through a collision detection method session control using port numbers data link layer addressing placement and removal of frames from the media detection of errors through CRC calculations delimiting groups of bits into frames conversion of bits into data signals
data link layer addressing
detection of errors through CRC calculations
delimiting groups of bits into frames
What will a host on an Ethernet network do if it receives a frame with a destination MAC address that does not match its own MAC address?
It will discard the frame. It will forward the frame to the next host. It will remove the frame from the media. It will strip off the data-link frame to check the destination IP address.
It will discard the frame.
What are two examples of the cut-through switching method? (Choose two.)
store-and-forward switching
fast-forward switching
CRC switching
fragment-free switching
QOS switching
fast-forward switching
fragment-free switching
