NEW
Font size
Worksheetscisco SAYA
Total questions: 67
Worksheet time: 34mins
The main high-bandwidth connectivity methods used by medium and large enterprises:
DSL
PointToPoint
T1
Bus
cable modem
The main high-bandwidth connectivity methods used by medium and large enterprises
T3
PointToPoint
Bus
DSL
cable modem
Using the ping command, you can determine:
IP address of the router closest to the end device
number of routers between source and destination devices
default gateway address
the average time it takes for a packet to reach its destination and for the response to return to its origin
the average time each router takes to respond between source and destination devices
Command Line Utilities for Diagnosing Problems at Layer 3
DNS
ping
packet sniffer
CLI
Telnet
Command Line Utilities for Diagnosing Problems at Layer 3
CLI
DNS
ipconfig
Telnet
packet sniffer
Physical layer functions of the OSI model
signal generation
packet routing
data encapsulation in frames
adding a hardware address
data sharing
What is included in a logical topology map?
wireless signal coverage area
network data path
physical location of intermediate devices
location of cable lines
location of the wiring closet and access point
What is included in a logical topology map?
location of the wiring closet and access point
wireless signal coverage area
location of cable lines
physical location of intermediate devices
device names and Layer 3 addressing information
A type of network topology that allows you to see which end devices are connected to which intermediate devices and which media is being used:
logical
physical
bus
ring
star
By placing network equipment in the telecommunications bay, rather than at the user's workplace, the following advantages can be achieved:
higher transmission speed
centralized node management
enhanced physical security
less electricity consumption.
greater resistance against hacking attempts
A common name for all computers connected to a network that are directly involved in network communication:
server
host
intermediate device
router
client
Carriers that are used in the transmission of data by light pulses
copper cable
coaxial cable
twisted pair
wireless connection
Classful IP addresses describe the following statements:
Only class A addresses have high bits of 100.
Reading the first bit allows you to determine the class to which the address belongs.
3 out of 5 address classes are reserved for multicast and experimental use.
The number of bits used to identify nodes depends on the class of the network.
The host portion of a class C address can be up to 24 bits.
Classful IP addresses describe the following statements:
Reading the first bit allows you to determine the class to which the address belongs.
All subnets on a network have the same size..
Only class A addresses have high bits of 100.
The host portion of a class C address can be up to 24 bits.
3 out of 5 address classes are reserved for multicast and experimental use.
Cisco Non-Volatile Memory (NVRAM):
contains the current configuration file
used to store the password encryption key.
used to store data in the absence of power
used to store the routing table
used to store the ARP table
User EXEC mode:
In this mode, you can configure the interfaces and protocols of the router.
The global configuration mode can be accessed using the enable command.
All router commands are available.
All aspects of the router configuration are available in this mode.
It is the default mode when you first start an unconfigured router..
A network attack that slows down or crashes hardware and software:
Virus, worm or trojan virus
Denial of service attack.
Zero Day or Zero Hour
Firewall
Spyware
A way to create a secure connection for remote workers
Virus, worm or trojan virus
Denial of service attack.
Virtual Private Network (VPN)
Zero Day or Zero Hour
Firewall
What is used to block unauthorized access to the network..
Denial of service attack
Virtual Private Network (VPN)
Firewall
Virus, worm or trojan virus
Zero Day or Zero Hour
A network attack that occurs on the first day a vulnerability is known
Zero Day or Zero Hour
Firewall
Virtual Private Network (VPN)
Denial of service attack
Virus, worm or trojan virus
Malicious code running on user devices
Zero Day or Zero Hour
Virus, worm or trojan virus
Firewall
Virtual Private Network (VPN)
Denial of service attack
A type of software installed on a computer that secretly collects information about websites visited by computer users.
Virtual Private Network (VPN)
Firewall
Zero Day or Zero Hour
Spyware
Denial of service attack.
A type of network that provides secure access to corporate systems for vendors, customers, and employees.
intranet
Extranet
Internet
Virtual Private Network (VPN)
Extended network
A network trend that allows users to access company network resources from their personal laptops and smartphones.
Extranet
Cloud computing
BYOD
VPN
intranet
A network trend that allows users to access company network resources from their personal laptops and smartphones.
Cloud computing
BYOD
Extranet
VPN
intranet
ISP
a protocol that defines the method of interaction between computers on a local network.
a network device that combines the functionality of several different network devices into one.
an organization that develops standards for cables and wires in networking.
An organization that provides an opportunity for individuals and businesses to connect to the Internet.
A protocol that defines network security requirements.
A network characteristic that allows a network to rapidly expand to support new users and applications without compromising the efficiency of serving existing ones.
scalability
quality of service
availability
reliability
consistency
> A device that performs the function of determining the path that messages should take through internetworks.
router
DSL - modem
web server
firewall
IPS
Command log functions
Calling previously entered commands.
View a list of commands entered during the previous session.
Calling up to 15 command lines by default.
Save router settings.
Save command lines in a log for future reference.
Modes and interfaces that can be password protected to restrict access to the Cisco IOS or its segments.
ip address configuration mode
Virtual Terminals (VTY)
user EXEC configuration save mode
Ethernet interface
user EXEC mode
Static routes describe
They require manual reconfiguration to implement network changes.
They are defined in the routing table with the prefix C
They are created in interface customization mode.
They automatically become the default gateway on the router.
They are automatically updated when the interface is reconfigured or disabled.
The local DNS server is responsible for the following tasks
converting names to IP addresses for internal hosts.
dynamic IP address assignment
support for a large number of cached DNS records
Internet service provider server support
forwarding all name conversion requests to root servers on the internet
OSI and TCP/IP models:
The OSI network layer is comparable to the Internet layer of the TCP/IP model.
The TCP/IP model is based on eight layers, and the OSI model is based on four layers
The two lower layers of the TCP/IP model form the lower layer of the OSI model.
The TCP/IP model is a theoretical model, and the OSI model is based on real protocols.
The TCP/IP model defines protocols for connecting physical networks.
OSI and TCP/IP models:
The TCP/IP model is based on four layers, and the OSI model is based on seven layers.
The OSI session layer is comparable to the Internet layer of the TCP/IP model.
The two lower layers of the TCP/IP model form the lower layer of the OSI model.
The TCP/IP model is a theoretical model, and the OSI model is based on real protocols.
The TCP/IP model defines protocols for connecting physical networks.
The package parameters will be the same for each session when a node interacts with multiple applications on the same server
IP address and MAC address
MAC address and session number
IP address and session number
IP address and port number
MAC address and port number
Network Reliability Characteristics
Reliability is measured by the number of applications used on the network.
Redundant hardware provides increased reliability.
The higher the MTTR (Mean Time to Repair), the higher the reliability.
Fault tolerance is a measure of reliability.
The ISP guarantees the same level of reliability to all subscribers.
Description of the FTP protocol
The FTP client starts the data transfer using the active connection.
The protocol interpreter performs the data transfer function.
It uses the well-known port 23.
The protocol requires two connections between the client and the server.
FTP servers open a well-known port on the client computer.
Default subnet mask for address 172.32.18.222
255.255.255.0
255.0.0.0
255.255.0.0
255.255.255.254
255.255.255.255
A class C network address can start with a high order binary number:
110
000
001
010
011
Subnet mask for network address 172.16.4.8/18
255.255.240.0
255.255.0.0
255.255.192.0
255.255.248.0
255.255.255.0
The number of IP addresses that can be assigned to end devices on a network with a subnet mask of 255.255.255.248.
30
6
126
254
510
For a subnet with at least 20 host addresses, use the subnet mask.
255.255.255.240
255.255.255.192
255.255.255.0
255.255.255.224
255.255.255.248
Feature that provides scalability of network devices
fixed number of interfaces
modularity
simplicity of repair
low maintenance requirements
low cost
Internet bandwidth speed units.
bytes per second
bits per second
Hertz
megabyte per second
packets per second
The host is having trouble connecting to the server at 192.168.100.2. The statement that best describes the output of the ping command, as shown in the image
The server has no return path to the node.
Server is disabled.
Some packets reach their destination.
Two routers on the path are not responding to pings.
Echo request services are not supported on the destination.
Host A is unable to connect to the web server at 192.168.100.2. Based on the output of the tracert command, the cause of the problem is most likely
Router A
Router F
Router B
Router C
Router D
A network utility that helps determine the location of network problems and the routers through which the packet passes
tracert
ping
ipconfing
netstat
nslookup
Function of the transport layer of the OSI model
formatting and encoding data for transmission
converting data into bits for transmission
routing data between networks
Ensuring reliable data transmission over the network using TCP
transferring data to the next device with a direct connection
Level 1 issue causing loss of Internet connection
wrong default gateway
invalid subnet mask
interruption of the network cable connection
invalid MAC address
faulty printer cable
The type of twisted-pair cable used between each device in the figure
A= crossover, B= straight through, C= straight through, D= crossover, E= crossover
A= straight through, B= straight through, C= straight through, D= crossover, E= console
A= console, B= straight through, C= crossover, D= crossover, E= straight through
A= console, B=straight through, C= straight through, D=crossover, E= crossover
A= console, B= crossover, C= crossover, D= straight through, E= straight through
Meaning of the statement: “The goal of communication system availability is five-9k.”
An idle time of .00001% is invalid.
The network must be available 99.999% of the time.
Five percent of all network costs cover 99% of user requirements.
The most critical time in terms of network availability is from 9:00 am to 5:00 pm five days a week.
The optimal time for network maintenance is from 17:00 to 09:00 five days a week.
The total number of combinations of eight bits in an 8-bit binary number
254
128
256
255
1024
Convert decimal number 231 to its binary equivalent.
11100101
11110110
11011011
11110010
11100111
Given a class C IP address and a default subnet mask, select the number of usable ports?
255
254
256
510
512
Broadcast network address for class C address 192.168.32.0 with default subnet mask
192.168.32.255
192.168.32.255
192.168.0.255
192.168.32.0
192.168.32.254
Company XYZ uses the network address 192.168.4.0 and the mask 255.255.255.224 to create subnets. The maximum number of usable hosts per subnet is:
24
14
30
6
8
The maximum number of host addresses per network provided by the IPv4 class:
Class A
Class B
Class C
Class D
Class E
Which IPv4 class provides the largest number of networks?
Class A
Class C
Class B
Class E
Class D
The statement that provides a shared IP address
Shared IP addresses must be unique throughout the Internet.
Shared addresses cannot be used on a private network.
Shared addresses can only be duplicated on the local network.
Shared IP addresses should only be unique within the local network.
Network administrators are free to choose any public address to use on network devices that have access to the Internet.
Number of bits in an IPv6 address
128
64
94
192
256
Range of first octet in class B address
128 to 191
127 to 191
127 to 192
128 to 192
128 to 255
The range of IP addresses that can be assigned to hosts connected to the Fa0/0 interface of Router1 with IP address 192.168.1.65/27 to access external networks.
from 192.168.1.0 to 192.168.1.95
from 192.168.1.66 to 192.168.1.94
from 192.168.1.66 to 192.168.1.96
from 192.168.1.0 to 192.168.1.127
from 192.168.1.66 to 192.168.1.128
The network administrator uses a laptop to configure Switch X with a default gateway through the switch's console port. The VLAN 1 interface of the switch is assigned the IP address 192.168.5.68/26. To assign a default gateway to the switch, the administrator must run the command:
X(config)#ip default-gateway 192.168.5.126
X(config)#ip default-gateway 192.168.5.1
X(config)#ip default-gateway 192.168.5.190
X(config)#ip route 0.0.0. 0 0.0.0.0 192.168.5.192
X(config)#ip route 192.168.5.0 255.255.255.192 192.168.5.1
The SYST LED on the Catalyst 2960 switch reports a POST fault.
lights up permanently in yellow
flashes yellow rapidly.
flashes green rapidly
lights up in solid green
lights constantly in red
To save time, IOS commands can be entered partially and then terminated with a key or key combination
Tab
Ctrl-P
Ctrl-N
Up Arrow
Right arrow
Purpose of the routing protocol.
Allows the router to share information about known networks with other routers.
Used to create and maintain ARP tables.
Provides a segmentation method and reassembles data packets.
Allows the administrator to create a network addressing scheme.
Provides a procedure for encrypting and decrypting data into bits for packet forwarding.
Correct matching of protocol and port number
HTTP - 80
DNS - 25
FTP - 110
POP3 - 25
SMTP - 80
