Questions and Answers (1 / 3)
Operating systems and networks - Set 1
1.
What is a characteristic of a fault tolerant network?
a network that recovers quickly when a failure occurs and depends on redundancy to limit the impact of a failure
2.
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?
audio conference, financial transactions, web page
3.
What is a benefit of using cloud computing in networking?
Network capabilities are extended without requiring investment in new infrastructure, personnel, or software
4.
What is the function of the shell in an OS
It interfaces between the users and the kernel
5.
Which connection provides a secure CLI session with encryption to a Cisco switch?
an SSH connection
6.
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
7.
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 interrupt the ping process
8.
Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator uses a console connection to connect to the switch, which password is needed to access user EXEC mode?
pytanie 8
9.
On which switch interface would an administrator configure an IP address so that the switch can be managed remotely?
VLAN 1
10.
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
11.
What is an advantage to using a protocol that is defined by an open standard?
It encourages competition and promotes choices
12.
What are two benefits of using a layered network model? (Choose two.)
It assists in protocol design., It prevents technology in one layer from affecting other layers.
13.
Which two OSI model layers have the same functionality as two layers of the TCP/IP model? (Choose two.)
network, transport
14.
Which name is assigned to the transport layer PDU?
segment
15.
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 type of traffic that is crossing the network, the latency that is created by the number of network devices that the data is crossing
16.
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?
physical layer
17.
Which type of UTP cable is used to connect a PC to a switch port?
straight-through
18.
A network administrator is measuring the transfer of bits across the company backbone for a mission critical financial application. The administrator notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)
bylo
19.
What is a characteristic of UTP cabling?
cancellation
20.
What are two characteristics of fiber-optic cable? (Choose two.)
It is not affected by EMI or RFI., It is more expensive than UTP cabling is.
21.
What is a characteristic of the LLC sublayer?
It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.
22.
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?
partial mesh
23.
What method is used to manage contention-based access on a wireless network?
CSMA/CA
24.
What are the three primary functions provided by Layer 2 data encapsulation? (Choose three.)
data link layer addressing, detection of errors through CRC calculations, delimiting groups of bits into frames
25.
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
26.
What are two examples of the cut-through switching method? (Choose two.)
fast-forward switching, fragment-free switching
27.
What are two actions performed by a Cisco switch? (Choose two.)
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.
Which frame forwarding method receives the entire frame and performs a CRC check to detect errors before forwarding the frame?
store-and-forward switching
29.
Refer to the exhibit. If host A sends an IP packet to host B, what will the destination address be in the frame when it leaves host A?
pytanie 29
30.
What addresses are mapped by ARP?
destination MAC address to a destination IPv4 address
31.
What information is added during encapsulation at OSI Layer 3?
source and destination IP address
32.
What are two services provided by the OSI network layer? (Choose two.)
encapsulating PDUs from the transport layer, routing packets toward the destination
33.
Refer to the exhibit. The network administrator for a small advertising company has chosen to use the 192.168.5.96/27 network for internal LAN addressing. As shown in the exhibit, a static IP address is assigned to the company web server. However, the web server cannot access the Internet. The administrator verifies that local workstations with IP addresses that are assigned by a DHCP server can access the Internet, and the web server is able to ping local workstations. Which component is incorrectly configured?
pytanie 33
34.
Why does a Layer 3 device perform the ANDing process on a destination IP address and subnet mask?
to identify the network address of the destination network
35.
What are two functions of NVRAM? (Choose two.)
to retain contents when power is removed, to store the startup configuration file
36.
Refer to the exhibit. What will be the result of entering this configuration the next time a network administrator connects a console cable to the router and no additional commands have been entered?
pytanie 36
37.
What is the dotted decimal representation of the IPv4 address 11001011.00000000.01110001.11010011?
203.0.113.211
38.
What are three characteristics of multicast transmission? (Choose three.)
A single packet can be sent to a group of hosts., Multicast transmission can be used by routers to exchange routing information., Routers will not forward multicast addresses in the range of 224.0.0.0 to 224.0.0.255
39.
What are the three ranges of IP addresses that are reserved for internal private use? (Choose three.)
10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16
40.
What purpose does NAT64 serve in IPv6?
It converts IPv6 packets into IPv4 packets.
41.
What is the most compressed representation of the IPv6 address 2001:0000:0000:abcd:0000:0000:0000:0001?
2001:0:0:abcd::1
42.
Which range of link-local addresses can be assigned to an IPv6-enabled interface?
FE80::/10
43.
Which three addresses are valid public addresses? (Choose three.)
198.133.219.17, 128.107.12.117, 64.104.78.227
44.
Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct? (Choose two.)
pytanie 44
45.
What type of IPv6 address is FE80::1?
link-local
46.
How many valid host addresses are available on an IPv4 subnet that is configured with a /26 mask?
62
47.
A site administrator has been told that a particular network at the site must accommodate 126 hosts. Which subnet mask would be used that contains the required number of host bits?
255.255.255.128
48.
A network administrator wants to have the same subnet mask for three subnetworks at a small site. The site has the following networks and numbers of devices:
Subnetwork A: IP phones – 10 addresses
Subnetwork B: PCs – 8 addresses
Subnetwork C: Printers – 2 addresses
What single subnet mask would be appropriate to use for the three subnetworks?
255.255.255.240
49.
How many hosts are addressable on a network that has a mask of 255.255.255.248?
6
50.
Which subnet would include the address 192.168.1.96 as a usable host address?
192.168.1.64/26