Cisco CCST-NETWORKING Online Practice Questions and Exam Preparation

Cisco CCST-NETWORKING Online Questions & Answers

• Question 11:

  DRAG DROP

  Move each network type from the list on the left to the correct example on the right.

  Select and Place:

  

  

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  Explanation/Reference:

  Two home office computers are connected to a switch by Ethernet cables. Three government buildings in the same city connect to a cable company over coaxial cables.

  A cell phone connects to a Bluetooth headset.

  A financial institution connects its branches through a telecommunications service provider.

  LAN (Local Area Network): Used for connecting devices within a small geographical area such as a single building or home. MAN (Metropolitan Area Network): Covers a larger geographical area than a LAN, typically a city or campus.

  PAN (Personal Area Network): Connects devices within the range of an individual person, such as connecting a phone to a Bluetooth headset. WAN (Wide Area Network): Spans large geographical areas, connecting multiple LANs across cities, countries, or continents.

  References:

  Network Types Overview: Cisco Networking Basics

  Understanding Different Network Types: Network Types Guide

• Question 12:

  Which two statements are true about the IPv4 address of the default gateway configured on a host? (Choose 2.)

  Note: You will receive partial credit for each correct selection.

  A. The IPv4 address of the default gateway must be the first host address in the subnet.
  B. The same default gateway IPv4 address is configured on each host on the local network.
  C. The default gateway is the Loopback0 interface IPv4 address of the router connected to the same local network as the host.
  D. The default gateway is the IPv4 address of the router interface connected to the same local network as the host.
  E. Hosts learn the default gateway IPv4 address through router advertisement messages.
  B. The same default gateway IPv4 address is configured on each host on the local network.
  D. The default gateway is the IPv4 address of the router interface connected to the same local network as the host.

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  Explanation/Reference:

  -Statement B: "The same default gateway IPv4 address is configured on each host on the local network." This is true because all hosts on the same local network (subnet) use the same default gateway IP address to send packets destined

  for other networks.

  -Statement D: "The default gateway is the IPv4 address of the router interface connected to the same local network as the host." This is true because the default gateway is the IP address of the router's interface that is directly connected to

  the local network.

  -Statement A: "The IPv4 address of the default gateway must be the first host address in the subnet." This is not necessarily true. The default gateway can be any address within the subnet range. -Statement C: "The default gateway is the

  Loopback0 interface IPv4 address of the router connected to the same local network as the host." This is not true; the default gateway is the IP address of the router's physical or logical interface connected to the local network.

  -Statement E: "Hosts learn the default gateway IPv4 address through router advertisement messages." This is generally true for IPv6 with Router Advertisement (RA) messages, but not typically how IPv4 hosts learn the default gateway

  address.

• Question 13:

  A help desk technician receives the four trouble tickets listed below. Which ticket should receive the highest priority and be addressed first?

  A. Ticket 1: A user requests relocation of a printer to a different network jack in the same office. The jack must be patched and made active.
  B. Ticket 2: An online webinar is taking place in the conference room. The video conferencing equipment lost internet access.
  C. Ticket 3: A user reports that response time for a cloud-based application is slower than usual.
  D. Ticket 4: Two users report that wireless access in the cafeteria has been down for the last hour.
  B. Ticket 2: An online webinar is taking place in the conference room. The video conferencing equipment lost internet access.

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  Explanation/Reference:

  When prioritizing trouble tickets, the most critical issues affecting business operations or high-impact activities should be addressed first. Here's a breakdown of the tickets:

  Ticket 1: Relocation of a printer, while necessary, is not urgent and does not impact critical operations.

  Ticket 2: An ongoing webinar losing internet access is critical, especially if the webinar is time-sensitive and involves multiple participants. Ticket 3: Slower response time for a cloud-based application is important but typically not as urgent as

  a complete loss of internet access for a live event. Ticket 4: Wireless access down in the cafeteria affects users but does not have the same immediate impact as a live webinar losing connectivity. Thus, the correct answer is B. Ticket 2: An

  online webinar is taking place in the conference room. The video conferencing equipment lost internet access.

  References:

  IT Help Desk Best Practices

  Prioritizing IT Support Tickets

• Question 14:

  Examine the following output:

  

  Which two conclusions can you make from the output of the tracert command? (Choose 2.)

  Note: You will receive partial credit for each correct answer.

  A. The trace successfully reached the www.cisco.com server.
  B. The trace failed after the fourth hop.
  C. The IPv6 address associated with the www.cisco.com server is 2600:1408: c400: 38d: : b33.
  D. The routers at hops 5 and 6 are offline.
  E. The device sending the trace has IPv6 address 2600:1408:c400:38d :: b33.
  A. The trace successfully reached the www.cisco.com server.
  C. The IPv6 address associated with the www.cisco.com server is 2600:1408: c400: 38d: : b33.

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  Explanation/Reference:

  -Statement A: "The trace successfully reached the www.cisco.com server." This is true as indicated by the "Trace complete" message at the end, showing that the trace has reached its destination. -Statement C: "The IPv6 address associated

  with the www.cisco.com server is 2600:1408:c400:38d::b33." This is true because the final hop in the trace, which is the destination, has this IPv6 address.

  -Statement B: "The trace failed after the fourth hop." This is incorrect as the trace continues beyond the fourth hop, despite some intermediate timeouts. -Statement D: "The routers at hops 5 and 6 are offline." This is not necessarily true. The

  routers might be configured to not respond to traceroute requests.

  -Statement E: "The device sending the trace has IPv6 address 2600:1408:c400:38d::b33."

  This is incorrect; this address belongs to the destination server, not the sender.

  References:

  -Understanding Traceroute: Traceroute Guide

• Question 15:

  HOTSPOT

  You plan to use a network firewall to protect computers at a small office.

  For each statement about firewalls, select True or False.

  Note: You will receive partial credit for each correct selection.

  Hot Area:

  

  

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  Explanation/Reference:

  A firewall can direct all web traffic to a specific IP address. A firewall can block traffic to specific ports on internal computers. A firewall can prevent specific apps from running on a computer.

  Directing Web Traffic: Firewalls can manage traffic redirection using NAT and port forwarding rules to route web traffic to designated servers or devices within the network.

  Blocking Specific Ports: Firewalls can enforce security policies by blocking or allowing traffic based on port numbers, ensuring that only permitted traffic reaches internal systems.

  Application Control: While firewalls manage network traffic, preventing applications from running typically requires software specifically designed for endpoint protection and application management.

  References:

  Understanding Firewalls: Firewall Capabilities

  Network Security Best Practices: Network Security Guide

• Question 16:

  A support technician examines the front panel of a Cisco switch and sees 4 Ethernet cables connected in the first four ports. Ports 1, 2, and 3 have a green

  LED. Port 4 has a blinking green light.

  What is the state of the Port 4?

  A. Link is up with cable malfunctions.
  B. Link is up and not stable.
  C. Link is up and active.
  D. Link is up and there is no activity.
  C. Link is up and active.

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  Explanation/Reference:

  On a Cisco switch, a port with a blinking green LED typically indicates that the port is up (active) and is currently transmitting or receiving data. This is a normal state indicating active traffic on the port.

  -A. Link is up with cable malfunctions: Usually indicated by an amber or blinking amber light.

  -B. Link is up and not stable: Not typically indicated by a green blinking light.

  -D. Link is up and there is no activity: Would be indicated by a solid green light withoutblinking.

  Thus, the correct answer is C. Link is up and active.

  References:

  -Cisco Switch LED Indicators

  -Cisco Ethernet Switch LED Patterns

• Question 17:

  What is the purpose of assigning an IP address to the management VLAN interface on a Layer 2 switch?

  A. To enable the switch to act as a default gateway for the attached devices
  B. To enable the switch to resolve URLs for the attached the devices
  C. To enable the switch to provide DHCP services to other switches in the network
  D. To enable access to the CLI on the switch through Telnet or SSH
  D. To enable access to the CLI on the switch through Telnet or SSH

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  Explanation/Reference:

  The primary purpose of assigning an IP address to the management VLAN interface on a Layer 2 switch is to facilitate remote management of the switch. By configuring an IP address on the management VLAN, network administrators can

  access the switch's Command Line Interface (CLI) remotely using protocols such as Telnet or Secure Shell (SSH). This allows for convenient configuration changes, monitoring, and troubleshooting without needing physical access to the

  switch1.

  References:

  -Understanding the Management VLAN

  -Cisco - VLAN Configuration Guide

  -Remote Management of Switches

  Assigning an IP address to the management VLAN interface (often the VLAN 1 interface by default) on a Layer 2 switch allows network administrators to remotely manage the switch using protocols such as Telnet or SSH. This IP address

  does not affect the switch's ability to route traffic between VLANs but provides a means to access and configure the switch through its Command Line Interface (CLI).

  -A: The switch does not act as a default gateway; this is typically a function of a Layer 3 device like a router.

  -B: The switch does not resolve URLs; this is typically a function of DNS servers.

  -C: The switch can relay DHCP requests but does not typically provide DHCP services

  itself; this is usually done by a dedicated DHCP server or router.

  Thus, the correct answer is D. To enable access to the CLI on the switch through Telnet or SSH.

  References :

  -Cisco VLAN Management Overview

  -Cisco Catalyst Switch Management

• Question 18:

  DRAG DROP

  Examine the connections shown in the following image. Move the cable types on the right to the appropriate connection description on the left. You may

  use each cable type more than once or not at all.

  

  Select and Place:

  

  

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  Explanation/Reference:

  Based on the image description provided, here are the cable types matched with the appropriate connection descriptions:

  Connects Switch S1 to Router R1 Gi0/0/1 interfaceCable Type: = Straight-through UTP Cable

  Connects Router R2 Gi0/0/0 to Router R3 Gi0/0/0 via underground conduitCable Type : = Fiber Optic Cable

  Connects Router R1 Gi0/0/0 to Router R2 Gi0/0/1Cable Type: = Crossover UTP Cable Connects Switch S3 to Server0 network interface cardCable Type: = Straight-through UTP Cable

  The choices are based on standard networking practices where:

  Straight-through UTP cablesare typically used to connect a switch to a router or a network interface card.

  Fiber optic cablesare ideal for long-distance, high-speed data transmission, such as connections through an underground conduit.

  Crossover UTP cablesare used to connect similar devices, such as router-to-router connections.

  These matches are consistent with the color-coded cables in the image: green for switch connections, yellow for router-to-router connections within the same rack, and blue for inter-rack connections. The use of these cables follows the Ethernet cabling standards.

  Connects Switch S1 to Router R1 Gi0/0/1 interface:

  Connects Router R2 Gi0/0/0 to Router R3 Gi0/0/0 via underground conduit:

  Connects Router R1 Gi0/0/0 to Router R2 Gi0/0/1:

  Connects Switch S3 to Server0 network interface card:

  Straight-through UTP Cable: Used to connect different devices (e.g., switch to router, switch to server).

  Crossover UTP Cable: Used to connect similar devices directly (e.g., router to router, switch to switch).

  Fiber Optic Cable: Used for long-distance and high-speed connections, often between buildings or data centers.

  References:

  Network Cable Types and Uses: Cisco Network Cables Understanding Ethernet Cabling: Ethernet Cable Guide

• Question 19:

  In the network shown in the following graphic, Switch1 is a Layer 2 switch.

  

  PC-A sends a frame to PC-C. Switch1 does not have a mapping entry for the MAC address of PC-C. Which action does Switch1 take?

  A. Switch1 queries Switch2 for the MAC address of PC-C.
  B. Switch1 drops the frame and sends an error message back to PC-A.
  C. Switch1 floods the frame out all active ports except port G0/1.
  D. Switch1 sends an ARP request to obtain the MAC address of PC-C.
  B. Switch1 drops the frame and sends an error message back to PC-A.

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  Explanation/Reference:

  In a network, when a Layer 2 switch (like Switch1) receives a frame destined for a MAC address that is not in its MAC address table, it performs a flooding operation. This means the switch will send the frame out of all ports except the port on

  which the frame was received. This flooding ensures that if the destination device is connected to one of the other ports, it will receive the frame and respond, allowing the switch to learn its MAC address. A. Switch1 queries Switch2 for the

  MAC address of PC-C: This does not happen in Layer 2 switches; they do not query other switches for MAC addresses. A. Switch1 drops the frame and sends an error message back to PC-A: This is not the default behavior for unknown

  unicast frames. D. Switch1 sends an ARP request to obtain the MAC address of PC-C: ARP is used by devices to map IP addresses to MAC addresses, not by switches to find unknown MAC addresses.

  Thus, the correct answer is B. Switch1 floods the frame out all active ports except port G0/1.

  References:

  Cisco Layer 2 Switching Overview

  Switching Mechanisms (Cisco)

• Question 20:

  Which wireless security option uses a pre-shared key to authenticate clients?

  A. WPA2-Personal
  B. 802.1x
  C. 802.1q
  D. WPA2-Enterprise
  A. WPA2-Personal

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  Explanation/Reference:

  WPA2-Personal, also known as WPA2-PSK (Pre-Shared Key), is the wireless security option that uses a pre-shared key to authenticate clients. This method is designed for home and small office networks and doesn't require an

  authentication server. Instead, every user on the network uses the same key or passphrase to connect.

  References:

  -What is a Wi-Fi Protected Access Pre-Shared Key (WPA-PSK)?

  -Exploring WPA-PSK and WiFi Security

  =========================

  -WPA2-Personal: This wireless security option uses a pre-shared key (PSK) for authentication. Each client that connects to the network must use this key to gain access. It is designed for home and small office networks where simplicity and

  ease of use are important.

  -WPA2-Enterprise: Unlike WPA2-Personal, WPA2-Enterprise uses 802.1x authentication with an authentication server (such as RADIUS) and does not rely on a pre-shared key. -802.1x: This is a network access control protocol for LANs,

  particularly wireless LANs. It provides an authentication mechanism to devices wishing to attach to a LAN or WLAN. -802.1q: This is a networking standard that supports VLAN tagging on Ethernet networks and is not related to wireless

  security.

  References:

  Cisco Documentation on WPA2 Security: Cisco WPA2 Understanding Wireless Security: Wireless Security Guide