WorksheetsСетевые технологии и протоколы
Total questions: 42
Worksheet time: 21mins
Which command assigns an IP address to a router interface?
ip set 10.0.0.1 255.255.255.0
ip address 10.0.0.1 255.255.255.0
interface ip address 10.0.0.1 255.255.255.0
address 10.0.0.1 255.255.255.0
Which of the following protocols operate at the transport layer of the OSI model?
TCP
UDP
IP
HTTP
What does the double colon :: in an IPv6 address represent?
Placeholder for the subnet identifier
Abbreviation for a consecutive group of zero blocks
Loopback address
Gateway address
What is the purpose of the ICMP protocol?
Routing data between different networks
Sending error messages and operational information about network interactions
Managing IP address assignments
Establishing secure communication channels
What protocol is used for dynamically assigning IP addresses to devices on a network?
DNS
DHCP
HTTP
ICMP
At which level of the OSI model is end-to-end communication and error recovery provided?
Data Link
Network
Transport
Application
What protocol is used by devices for dynamic discovery of a device's MAC address in a network?
ARP (Address Resolution Protocol)
DNS
ICMP
HTTP
The router receives a packet intended for the IP address 192.168.1.100, but does not have the corresponding MAC address in its ARP cache. What does the router do next?
The router sends an ARP request to find the MAC address of 192.168.1.100.
The router drops the packet.
The router forwards the packet to all other devices on the network.
The router assigns a default MAC address to the packet.
How to enable the router interface?
start interface
no shutdown
enable interface
activate interface
What is the difference between a private IP address and a public IP address?
A private IP address can be used on the Internet, while a public IP address cannot.
A private IP address is used for communication within a local network, while a public IP address is used for communication over the Internet.
A private IP address is faster than a public IP address.
A private IP address is automatically assigned by a router.
What does the ping command test?
Throughput
Network connectivity
Encryption strength
MAC address resolution
What device connects multiple networks and determines the best path for data?
Switch
Hub
Router
Repeater
What is the default gateway?
IP address of the router used to access external networks
MAC address of the local host
IP address of the DNS server
Broadcast address
What is the purpose of NAT (Network Address Translation)?
Translate domain names to IP addresses
Allow private IP addresses to interact with public networks
Provide encryption for network traffic
Switch traffic between VLANs
What type of cable is used for directly connecting two switches?
Console cable
Straight cable
Crossover cable
Coaxial cable
Which layer of the OSI model is responsible for routing?
Data Link
Network
Transport
Application
Which device operates at layer 2 of the OSI model?
Router
Switch
Modem
Repeater
What is a MAC address?
IP address assigned by DHCP
Hardware address
Which device operates at layer 2 of the OSI model?
Router
✅ Switch
Modem
Repeater
What is a MAC address?
IP address assigned by DHCP
✅ Hardware address assigned to the network card
Routing table entry
Domain name
What is the purpose of DNS?
Encrypt data
✅ Translate domain names to IP addresses
Assign IP addresses
Resolve MAC addresses
What does the tracert command show?
MAC address of the host
✅ The path that packets take to reach their destination
Current ARP table
Default gateway IP address
What type of address is 127.0.0.1?
Broadcast address
Public IP
✅ Loopback address
Multicast address
What protocol is used for secure access to a remote device?
Telnet
FTP
✅ SSH
SMTP
What does a switch use to forward frames?
IP address
✅ MAC address
Port number
Subnet mask
Which device segments broadcast domains and increases the number of collisions?
✅ Switch
Hub
Router
Bridge
What is the purpose of VLAN?
Assign MAC addresses
Encrypt traffic
✅ Create logical broadcast domains within a switch
Block ARP requests
What command shows the current routing table on a Cisco router?
show config
✅ show ip route
show interfaces
route table
What command would you use to save the current configuration on a Cisco device?
✅ copy running-config startup-config
save configuration
write configuration
save configuration
What protocol does a host use to request its IP from the DHCP server?
ARP
✅ DHCP Discover
ICMP
IP request
What is the function of a subnet mask?
✅ To determine the network and host parts of an IP address
To assign IP addresses to clients
To store routing information
To hide private IP addresses
Which of the following is a valid private IP address?
8.8.8.8
172.16.5.4
✅ 192.168.0.10
1.1.1.1
What does TTL mean in the packet header?
✅ Time to live
Transmission to level
Time per cycle
End transmission line
What is the maximum number of hosts in a /24 subnet?
128
✅ 254
256
512
What is the main function of a firewall?
Assign IP addresses
✅ Control incoming and outgoing traffic based on rules
Connect networks
Switch frames
What command is used to enter interface configuration mode on a router?
enable interface
✅ interface [name]
config-if
set interface
What is the purpose of the command show ip interface brief?
Show MAC addresses
✅ Show a summary of interface statuses and IP addresses
Show routing protocols
Show DNS settings
What protocol is used for sending email?
POP3
IMAP
✅ SMTP
FTP
What type of cable is used from a PC to a switch?
Crossover
✅ Straight
Rollover
Fiber optic
What address is used for broadcasting in IPv4?
192.168.0.1
255.255.0.0
✅ 255.255.255.255
0.0.0.0
What port number is used for HTTP?
FTP
DNS
✅ HTTP
SSH
Which protocol resolves a domain name to an IP address?
ARP
SMTP
FTP
✅ DNS
