CCST Networking(100-150)
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| Exam Code |
100-150 |
| Exam Name |
CCST Networking |
| Questions |
300 Questions Answers With Explanation |
| Update Date |
May 1, 2025 |
Sample Questions
Question 1:
Which device operates at Layer 2 of the OSI model and is used to forward frames based on MAC addresses?
A. Router
B. Switch
C. Firewall
D. Hub
Correct Answer: B
Explanation: A switch operates at Layer 2 (Data Link) and forwards frames based on MAC addresses.
Question 2:
What is the main function of the DHCP protocol?
A. To encrypt data in transit
B. To assign IP addresses automatically
C. To resolve domain names to IP addresses
D. To monitor network traffic
Correct Answer: B
Explanation: DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses to devices on a network.
Question 3:
Which protocol is used to securely access a remote device via a command-line interface?
A. Telnet
B. FTP
C. SSH
D. SNMP
Correct Answer: C
Explanation: SSH (Secure Shell) provides a secure way to access remote devices over an unsecured network.
Question 4:
What is the default subnet mask for a Class C IPv4 address?
A. 255.0.0.0
B. 255.255.0.0
C. 255.255.255.0
D. 255.255.255.255
Correct Answer: C
Explanation: Class C IP addresses use the default subnet mask 255.255.255.0.
Question 5:
Which type of address is FE80::1?
A. Global unicast
B. Multicast
C. Loopback
D. Link-local
Correct Answer: D
Explanation: IPv6 addresses starting with FE80::/10 are link-local addresses used for communication on the same local link.
Question 6:
Which command is used to test network connectivity between two devices?
A. nslookup
B. tracert
C. ping
D. ipconfig
Correct Answer: C
Explanation: The ping command tests the reachability of a host on an IP network.
Question 7:
What is the function of a router in a network?
A. Filter traffic based on port numbers
B. Assign MAC addresses to devices
C. Forward packets between different networks
D. Amplify electrical signals
Correct Answer: C
Explanation: Routers operate at Layer 3 (Network) and forward packets between different IP networks.
Question 8:
Which protocol translates domain names into IP addresses?
A. SMTP
B. DNS
C. HTTP
D. DHCP
Correct Answer: B
Explanation: DNS (Domain Name System) translates human-readable domain names to IP addresses.
Question 9:
Which Wi-Fi security protocol is the most secure for home use?
A. WEP
B. WPA
C. WPA2
D. WPA3
Correct Answer: D
Explanation: WPA3 is the latest and most secure Wi-Fi encryption standard.
Question 10:
Which topology connects each device to a central hub or switch?
A. Bus
B. Ring
C. Mesh
D. Star
Correct Answer: D
Explanation: In a star topology, all devices are connected to a central hub or switch.
Question 11:
What type of IP address is 192.168.0.1?
A. Public
B. Broadcast
C. Private
D. Multicast
Correct Answer: C
Explanation: 192.168.0.1 falls in the private IP address range defined for internal use.
Question 12:
What is the primary purpose of a firewall?
A. Allocate IP addresses
B. Boost Wi-Fi signal
C. Filter network traffic
D. Store DNS entries
Correct Answer: C
Explanation: Firewalls monitor and filter incoming and outgoing network traffic based on security rules.
Question 13:
Which layer of the OSI model ensures reliable delivery of packets?
A. Network
B. Data Link
C. Transport
D. Application
Correct Answer: C
Explanation: The Transport layer (Layer 4) provides reliable data delivery using TCP.
Question 14:
What does NAT stand for in networking?
A. Network Address Translation
B. Network Access Transfer
C. Node Access Table
D. Name Allocation Tracker
Correct Answer: A
Explanation: NAT allows private IP addresses to be mapped to a public IP address for Internet access.
Question 15:
Which cable type is commonly used in Ethernet networks?
A. Coaxial
B. Fiber optic
C. Twisted pair (UTP)
D. HDMI
Correct Answer: C
Explanation: Unshielded Twisted Pair (UTP) is the most common cable used in Ethernet networks.
Question 16:
Which command displays a device’s IP configuration on Windows?
A. netstat
B. ping
C. ipconfig
D. nslookup
Correct Answer: C
Explanation: ipconfig displays IP settings like IP address, subnet mask, and default gateway.
Question 17:
What is the maximum number of host IP addresses in a /24 subnet?
A. 254
B. 256
C. 128
D. 512
Correct Answer: A
Explanation: A /24 subnet has 256 total addresses, but 2 are reserved (network and broadcast), so 254 are usable.
Question 18:
Which protocol is used to send emails?
A. POP3
B. IMAP
C. SMTP
D. FTP
Correct Answer: C
Explanation: SMTP (Simple Mail Transfer Protocol) is used for sending email messages.
Question 19:
Which IP version uses a 128-bit address format?
A. IPv4
B. IPv6
C. DHCP
D. TCP
Correct Answer: B
Explanation: IPv6 uses 128-bit addresses, while IPv4 uses 32-bit.
Question 20:
Which tool is used to determine the path a packet takes to a destination?
A. ipconfig
B. tracert
C. arp
D. telnet
Correct Answer: B
Explanation: tracert (or traceroute on Linux/macOS) shows the path packets take to reach a target.
Question 21:
What is the loopback IP address in IPv4?
A. 192.168.1.1
B. 127.0.0.1
C. 10.0.0.1
D. 255.255.255.0
Correct Answer: B
Explanation: 127.0.0.1 is the IPv4 loopback address used to test local networking.
Question 22:
Which device connects two different networks together?
A. Switch
B. Hub
C. Access Point
D. Router
Correct Answer: D
Explanation: A router connects different networks and forwards data between them.
Question 23:
Which protocol is used for secure file transfers over SSH?
A. FTP
B. FTPS
C. SFTP
D. HTTP
Correct Answer: C
Explanation: SFTP (SSH File Transfer Protocol) uses SSH for secure file transfer.
Question 24:
Which protocol does HTTPS use for encryption?
A. SSL/TLS
B. FTP
C. UDP
D. ARP
Correct Answer: A
Explanation: HTTPS uses SSL/TLS to encrypt communication between web browsers and servers.
Question 25:
What port number does DNS typically use?
A. 80
B. 53
C. 443
D. 110
Correct Answer: B
Explanation: DNS typically uses port 53 for both TCP and UDP.
Question 26:
Which network topology provides the highest redundancy?
A. Star
B. Mesh
C. Bus
D. Ring
Correct Answer: B
Explanation: In a mesh topology, every device is connected to every other device, offering high redundancy.
Question 27:
Which OSI layer deals with MAC addressing?
A. Physical
B. Network
C. Data Link
D. Transport
Correct Answer: C
Explanation: The Data Link layer (Layer 2) handles MAC addressing and frame transmission.
Question 28:
Which technology is used to segment a physical network into multiple logical networks?
A. DNS
B. DHCP
C. VLAN
D. NAT
Correct Answer: C
Explanation: VLANs (Virtual LANs) allow a single physical network to be divided into multiple logical segments.
Question 29:
Which wireless standard operates on the 5 GHz band and supports high-speed data transfer?
A. 802.11a
B. 802.11b
C. 802.11n
D. 802.11ac
Correct Answer: D
Explanation: 802.11ac supports high-speed wireless communication in the 5 GHz band.
Question 30:
What is the purpose of ARP (Address Resolution Protocol)?
A. To find a MAC address from an IP address
B. To assign IP addresses
C. To resolve domain names
D. To test DNS servers
Correct Answer: A
Explanation: ARP maps an IP address to its corresponding MAC address on a local network.
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CCST Networking(100-150)
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