WorksheetsCN-I MCQ test
Total questions: 117
Worksheet time: 1hrs 1mins
When data is encoded as pulses of light, which media is being used to transmit the data?
Wireless
Fiber optic
Copper
Co-axial
Which connection physically connects the end device to the network?
Port
Interface
NIC
IP
What type of network must a home user access in order to do online shopping
Local Area Network
Internet
Intranet
Extranet
Physical management port that provides out-of-band access to a Cisco device is
Console
Telnet
SSH
Aux
Which command is used to move from user EXEC mode to privileged EXEC mode?
configure terminal
Interface fa0/1
Enable
ctrl+z
What is the command to assign the name “Sw-CP08” to a switch?
host name Sw-CP08
name Sw-CP08
devicename Sw-CP08
hostname Sw-CP08
How is the privileged EXEC mode access secured on a switch
enable secret class
secret class
service password-encryption
enable class
8. Which command encrypts all plaintext passwords access on a switch
enable secret
Login
Secret
service password-encryption
9. To access the switch remotely, an IP address and a subnet mask must be configured on?
SVI
• Physical Interface
Console
• Interface G0/1
10. What is the general term that is used to describe a piece of data at any layer of a networking model?
Frame
Protocol Data Unit
Segment
Packet
11. What process is used to place one message inside another message for transfer from the source to the destination?
Flow Control
Access Control
Encapsulation
Decoding
12. What is the name of PDU in Network Layer
Frame
Segment
Packet
Bit
13. Which media uses patterns of microwaves to represent bits?
Copper
Wireless
Fiber-Optic
Coaxial
14.Which is the most common networking media?
UTP
STP
Fiber Optic
Coaxial
15.Which connector is usually terminated with UTP cable?
BNC
Straight-Tip Connector
Subscriber Connector
RJ-45
Which of the following fiber-optic cable types use lasers in a single stream as a data light source transmitter?
Multimode
Fibermode
single-mode
copper
Which of the following wireless standards is best suited for industrial and IoT environments?
Zigbee
WiMAX
Wi-Fi
Bluetooth
Which of the following wireless standards is used for Personal Area Networks (PANs)
Zigbee
WiMAX
Wi-Fi
Bluetooth
IPv4 address is divided into four sections called?
Octet
Bits
Hextet
Binary
The number of bits in each IPv4 octet is?
128 bits
48 bits
8 bits
32 bits
Which is the binary equivalent to the 192?
10100000
11000000
10000011
11100000
Which is the binary equivalent to the 168?
10100000
10101010
10010011
10101000
Which is the decimal equivalent to the 11100000?
192
168
240
224
MAC Address and IPv6 are represented in which number system?
Hexadecimal
Decimal
Binary
Octel
What is another name for the OSI data link layer?
Layer 1
Layer 2
Layer 3
Layer 4
Device addresses in Data link layer are referred to as?
Physical Address
Logical Address
IP Address
IPv6 Address
What is the size of a MAC Adress?
128 bit
48 bit
64 bit
32 bit
What is examined an Ethernet Switch to make a forwarding decision
MAC Address Table
Routing Table
IP Address Table
VLAN Table
The MAC address table is sometimes referred to as?
Routing Table
IP Address Table
VLAN Table
Content addressable memory(CAM) table
. What feature automatically negotiates the best speed and duplex setting between interconnecting devices?
Auto-MDIX
Autobots
Auto negotiation
autotune
Which OSI layer sends segments to be encapsulated in an IPv4 or IPv6 packet
Data link layer
Network layer
Transport layer
Session layer
Which field is used to detect corruption in the IPv4 header?
Header Checksum
Time to Live
Protocol
Differentiated Services
What is the command used on a Cisco IOS router to view the routing table
netstat –r
route print
show ip route
show routing table
This type of route is also known as a gateway of last resort?
Static route
Remote route
Default route
Directly connected route
Where is the ARP table stored on a device
ROM
Flash
NVRAM
RAM
Which command could be used on a Cisco router to view its ARP table?
arp –a
arp –d
show arp table
show ip arp
Which protocol is used to determine the MAC address of a known destination device with IPv4 address
DHCP
ARP
DNS
ND
Which protocol is used to determine the MAC address of a known destination device with IPv6 address?
DHCP
ARP
DNS
ND
Which command is used to move from privileged EXEC mode to Global Configuration mode?
configure terminal
Interface fa0/1
enable
ctrl+z
Which command is used to activate the interface?
Shutdown
on
no Shutdown
activate
What is used when the host wants to send a packet to a device on another network?
next hop address
default route
default gateway
routing table
Which command is used to configure an IPv4 default gateway on a switch
default-gateway
default-router
ip gateway
ip default-gateway
Host-A has the IPv4 address and subnet mask 10.5.4.100 255.255.255.0. What is the network address of Host-A?
10.0.0.0
10.5.0.0
10.5.4.0
10.5.4.255
Host-A has the IPv4 address and subnet mask 172.16.4.100 255.255.0.0. What is the network address of Host-A?
172.0.0.0
172.16.0.0
172.16.4.0
172.16.4.100
What is the size of the IPv4 Address?
32 bit
48 bit
128 bit
64 bit
What is used to determine the network and host portions of a given IP Address
Bits
Octet
Subnet Mask
Hextet
What is a less cumbersome method used to identify a Subnet Mask Address
Bits
Octet
Hextet
Prefix length
What are the common blocks of addresses used by most organizations to assign IPv4 addresses to internal hosts.Private Addresses
Private Addresses
Public Addresses
Link-Local Addresses
Loopback Addresses
Which address used by Windows DHCP clients to self-configure when no DHCP servers are available
Private Addresses
Public Addresses
Link-Local Addresses
Loopback Addresses
127.0.0.0/8 Addresses are called?
Private Addresses
Public Addresses
Link-Local Addresses
Loopback Addresses
What is the prefix length notation for the subnet mask 255.255.255.224?
/25
/28
/26
/27
How many valid host addresses are available on an IPv4 subnet that is configured with a /26 mask?
62
254
190
192
Which subnet mask would be used if 5 host bits are available?255.255.255.240
255.255.255.240
255.255.255.0
255.255.255.224
255.255.255.128
A network administrator subnets the 192.168.10.0/24 network into subnets with /26 masks. How many equal-sized subnets are created?
8
16
1
4
What subnet mask is represented by the slash notation /20?
255.255.240.0
255.255.255.248
255.255.255.0
255.255.255.192
How many usable IP addresses are available on the 192.168.1.0/27 network
256
30
32
16
Which subnet mask would be used if exactly 4 host bits are available?
255.255.255.224
255.255.255.240
255.255.255.248
255.255.255.128
If a network device has a mask of /26, how many IP addresses are available for hosts on this network
64
32
14
62
What does the IP address 172.17.4.250/24 represent?
Host Address
Network Address
Multicast Address
Broadcast Address
If a network device has a mask of /28, how many IP addresses are available for hosts on this network?
254
16
14
62
What is the recommended prefix length for most IPv6 subnets
/32
/48
/64
/128
Which part of a GUA is assigned by the ISP?
Gobal Routing Prefix
Gobal Routing Prefix and Subnet ID
Prefix
RIR Prefix
Which type of IPv6 unicast address is not routable between networks?
Unique Local Address
GUA
Embedded IPv4 Address
LLA
What type of IPv6 address begins with fe80?
GUA
LLA
Multicast Address
Incorrect Address
Which protocol is used by IPv4 and IPv6 to provide error messaging?
ICMP
DHCP
ARP
NDP
Which utility uses the Internet Control Messaging Protocol (ICMP)?
ping
NTP
RIP
DNS
What kind of threat is described when a threat actor sends you a virus that can reformat your hard drive?
Data loss or Manipulation
Disruption of Service
Identify theft
information theft
Which device controls traffic between two or more networks to help prevent unauthorized access?
AAA Server
Firewall
ESA/WSA
IPS
Which device is used by other network devices to authenticate and authorize management access?
AAA Server
Firewall
ESA/WSA
IPS
Which benefit does SSH offer over Telnet for remotely managing a router?
Connection via multiple VTY lines
Encryption
Authorization
TCP usage
Which factor must be considered when selecting network devices?
Color
Console Connections
Cost
Elasticity
What is required to maintain a high degree of reliability and eliminate single points of failure?
Accessibility
Expandability
Integrity
Redundancy
What is required to classify traffic according to priority?
IP Addressing Scheme
Quality of Service(QoS)
Routing
Which command is used to check the speed, duplex, media type and other Layer1 and Layer2 details of a switch port?
show interfaces
show mac-address-table
show ip interface brief
show running-config
What is the first action in the boot sequence when a switch is powered on
load boot loader software
load a power-on self-test program
load the default CISCO IOS software
Low-Level CPU initialization
What type of Ethernet cable would be used to connect one switch to another switch when neither switch supports the auto-MDIX feature?
Rollover
Coaxial
Straight-Through
Crossover
Which type of address does a switch use to build the MAC address table?
Source IP Address
Source MAC Address
Destination IP Address
Destination MAC Address
Which network device can be used to eliminate collisions on an Ethernet network?
Hub
Router
Firewall
Switch
Which network device can be used to eliminate collisions on an Ethernet network?
Hub
Router
Firewall
Switch
Which network device can serve as a boundary to divide a Layer 2 broadcast domain?
Access point
Router
Ethernet bridge
Ethernet Hub
Which action is performed by a client when establishing communication with a server via the use of UDP at the transport layer?
The client sets the window size for the session.
The client sends an ISN to the server to start the 3-way handshake
The client randomly selects a source port number.
The client sends a synchronization segment to begin the session.
Which transport layer feature is used to guarantee session establishment?
UDP ACK flag
TCP 3-way handshake
UDP sequence number
TCP port number
What is the complete range of TCP and UDP well-known ports?
0 to 255
0 to 1023
256 – 1023
1024 – 49151
What is a socket?
the combination of the source and destination IP address and source and destination Ethernet address
the combination of a source IP address and port number or a destination IP address and port number
the combination of the source and destination sequence and acknowledgment numbers
the combination of the source and destination sequence numbers and port numbers
A PC is downloading a large file from a server. The TCP window is 1000 bytes. The server is sending the file using 100-byte segments. How many segments will the server send before it requires an acknowledgment from the PC
1 segment
10 segments
100 segments
1000 segments
Which factor determines TCP window size?
the amount of data to be transmitted
the number of services included in the TCP segment
the amount of data the destination can process at one time
the amount of data the source is capable of sending at one time
What does a client do when it has UDP datagrams to send?
It just sends the datagrams.
It queries the server to see if it is ready to receive data.
It sends a simplified three-way handshake to the server
It sends to the server a segment with the SYN flag set to synchronize the conversation
Which three fields are used in a UDP segment header? (Choose three.)
Window Size
Length
Source Port
Acknowledgment Number
Checksum
What are two roles of the transport layer in data communication on a network? (Choose two.)
identifying the proper application for each communication stream
tracking the individual communication between applications on the source and destination hosts
providing frame delimiting to identify bits making up a frame
performing a cyclic redundancy check on the frame for errors
What information is used by TCP to reassemble and reorder received segments?
port numbers
sequence numbers
acknowledgment numbers
fragment numbers
Which flag in the TCP header is used in response to a received FIN in order to terminate connectivity between two network devices?
FIN
ACK
SYN
RST
Which protocol or service uses UDP for a client-to-server communication and TCP for server-to-server communication?
HTTP
FTP
DNS
SMTP
What kind of port must be requested from IANA in order to be used with a specific application?
registered port
private port
dynamic port
source port
Which type of VLAN is assigned to 802.1Q trunk ports to carry untagged traffic?
Default
Native
Data
Management
In which memory location are the VLAN configurations of normal range VLANs stored on a Catalyst switch?
Flash
RAM
ROM
NVRAM
On a Cisco switch, where is extended range VLAN information stored
Startup configuration file
NVRAM
flash
running configuration file (A)
What is the default native vlan set in trunk?
VLAN 1
VLAN 99
VLAN 1002
NOT set by default
What is the default switchport mode for Cisco Catalyst switches?
Access
Trunk
Dynamic auto
Dynamic desirable
When configuring a router as part of a router-on-a-stick inter-VLAN routing topology, where should the IP address be assigned?
To the interface
To the subinterface
To the VLAN
To the SVI
What is the meaning of the number 10 in the encapsulation dot1Q 10 native router subinterface command??
The subnet number
The VLAN ID
The interface number
The subinterface number
What operational mode should be used on a switch port to connect it to a router for router-on-a-stick inter-VLAN routing?
Trunk
Dynamic desirable
Access
Dynamic auto
While configuring inter-VLAN routing on a multilayer switch, a network administrator issues the no switchport command on an interface that is connected to another switch. What is the purpose of this command?
To provide an access link that tags VLAN traffic
To provide a static trunk link
To create a switched virtual interface
To create a routed port for a single network
. What device is elected by the Spanning Tree Algorithm? All other switches determine a single leastcost path to this device
Root bridge
Dedicated bridge
Default gateway
Core Switch
The root bridge will be the switch with the:
Lowest bridge ID (A)
Highest bridge ID
Lowest port priority
Highest port priority
The sum of individual port costs along the path from the switch to the root bridge is known as the:
Least cost path
shortest path cost
Best path cost
Root path cost (A)
How often does a switch send a BPDU?
Every 2 seconds
Every 15 seconds
Every 20 seconds
Only when there is a change in the topology
Which PAgP interface mode will initiate negotiation with other interfaces
On
Desirable
Auto
Passive
When EtherChannel is implemented, multiple physical interfaces are bundled into which type of logical connection?
VLAN interface
Port Channel
Loopback
Interface range
As a DHCPv4 client lease is about to expire, what is the message that the client sends the DHCP server?
DHCPREQUEST
DHCPACK
DHCPDISCOVER
DHCPOFFER
What is the destination IP address when an IPv4 host sends a DHCPDISCOVER message?
255.255.255.255
192.168.1.1
224.0.0.1
0.0.0.0
Which is a DHCPv4 address allocation method that assigns IPv4 addresses for a limited lease period?
Manual allocation
Dynamic allocation
Automatic allocation
Pre-allocation
Which address does a DHCPv4 server target when sending a DHCPOFFER message to a client that makes an address request?
Client hardware address
Gateway IP address
Client IP address
Broadcast MAC address
Which ICMPv6 message is sent by a host in an attempt to locate an online IPv6enabled router to obtain IPv6 addressing information?
Neighbor Advertisement(NA
Neighbor Solicitation(NS)
Router Solicitation(RS)
Router Advertisement(RA)
What method is used by a host to verify an IPv6 address is unique on the local network before assigning that address to an interface?
ARP
DAD
PING
SLAAC
What UDP port do DHCPv6 clients use to send DHCPv6 messages
67
68
546
547
An IPv6-enabled router is to acquire its IPv6 GUA from a DHCPv6 server. Which interface configuration command should be configured on client router?
IPv6 address autoconfig
IPv6 address auto config
IPv6 address dhcp
IPv6 address dhcpv6
In FHRP terminology, what represents a set of routers that present the illusion of a single router to hosts?
Virtual router
Forwarding router
Standby router
Default gateway
