Question 1

Changing the SSID on the access point and disabling SSID broadcast is sufficient security for most wireless networks.

Accepted Answer

While changing the SSID and disabling SSID broadcast can add a layer of security, it is not sufficient on its own. Other security measures such as encryption, strong passwords, and limiting access to specific MAC addresses should also be implemented to ensure a secure wireless network.

Question 2

What has occurred when all routers in a network have accurate information after a change in the network?

Accepted Answer

Convergence refers to the process where all routers in the network have accurate information after a change in the network. This means that the network has stabilized and all routers are able to forward packets to their correct destinations without any issues. Delivery is a general term that refers to the successful transmission of packets from source to destination. Congestion is a condition where the network is overloaded with traffic, resulting in delays and packet loss. Concurrence refers to a situation where multiple events or processes are happening simultaneously.

Question 3

When a router's interface is configured to connect with a switch trunk port to route packets between VLANs, what is this called?

Accepted Answer

Connecting a router's interface to a switch trunk port to route packets between VLANs is commonly referred to as "router on a stick" configuration. A multi-homed router refers to a router that is connected to two or more networks, while dynamic and link-state routing are types of routing protocols.

Question 4

Which of the following is NOT a true statement regarding the function of a switch?

Accepted Answer

Switches determine the path based on the destination MAC address, not the IP address. IP addresses are used by routers for making forwarding decisions.

Question 5

Which switching method reads a minimum of 64 bytes of an Ethernet frame before forwarding the frame?

Accepted Answer

Fragment-free switching reads the first 64 bytes of the frame to ensure it is not a collision fragment before forwarding it. This method aims to balance the speed of cut-through switching with the error checking of store-and-forward switching by checking for collision fragments, which are typically smaller than 64 bytes.

Question 6

Which of the following combinations will you find in a switching table?

Accepted Answer

A switching table typically contains the MAC address of devices and the corresponding switch port number to which they are connected. This information is used by switches to forward network traffic directly to the intended recipient, without flooding the entire network. The other choices are not typically found in a switching table. Application/destination port numbers are used in transport layer protocols like TCP and UDP, and are not relevant at the data link layer where switches operate. IP addresses and next hop information are used in routing tables to determine the path for forwarding packets between networks, but switches only operate at the layer 2 level within a single network, so they do not make routing decisions.

Question 7

Which of the following is the fastest switching mode?

Accepted Answer

Cut-through switching mode forwards data immediately as soon as it reads the destination address without waiting for the complete frame to be received. Thus, it is the fastest switching mode among the given options. Fragment-free switching mode is a variant of cut-through switching mode that reads a few bytes of the frame before forwarding it to ensure that there are no transmission errors in the first 64 bytes of the frame. Store-and-forward switching mode reads the complete frame before forwarding it, which introduces higher latency. Auto-negotiate is not a switching mode; it is a protocol used to automatically configure network devices for optimal communication.

Question 8

More VLANs mean fewer logical networks, so the network is less complex.

Accepted Answer

More VLANs mean more logical networks, which can increase network complexity.

Question 9

What category of routing protocol is used to route packets between autonomous systems?

Accepted Answer

EGP (Exterior Gateway Protocol) is the category of routing protocol used to route packets between autonomous systems. EGP is an older protocol and has been replaced by BGP (Border Gateway Protocol), which is a type of path-vector routing protocol. Therefore, option C is the best choice.

Question 10

In which type of routing protocol is a router's routing table copied to neighboring routers to share internetwork information?

Accepted Answer

In distance-vector protocols, routers periodically exchange routing updates with their neighboring routers, and these updates contain the contents of their routing tables. This allows neighboring routers to learn about the best path to destinations in the internetwork. Examples of distance-vector protocols include Routing Information Protocol (RIP) and Interior Gateway Routing Protocol (IGRP).

Question 11

Your colleagues are discussing the operation of a device in which packets are routed between VLANs on the device rather than having to exit the device to be routed. What type of device are they most likely discussing?

Accepted Answer

A Layer 3 switch has the capability to route packets between VLANs internally, rather than having to send them out to a separate router for routing. This is known as inter-VLAN routing and can improve network performance by reducing the amount of traffic that needs to be routed externally. Access points and managed switches do not typically have the capability to perform inter-VLAN routing.

Question 12

What type of hacker uses a scanning device to find unsecured wireless networks and breaks into those networks?

Accepted Answer

A wardriver is a type of hacker who uses a scanning device to find unsecured wireless networks and breaks into those networks. White hat hackers are ethical hackers who use their skills to find vulnerabilities and enhance security. Script kiddies are inexperienced hackers who use tools created by others to break into systems without much knowledge. Phishers are hackers who use social engineering techniques to steal personal information.

Question 13

Routers can be used to control network access by inspecting the source and destination address information of packets.

Accepted Answer

Routers can use access control lists (ACLs) to inspect and filter packet traffic based on the source and destination IP addresses, as well as other packet header information. This enables routers to control which devices can access which parts of the network, helping to enhance network security and manage bandwidth usage.

Question 14

You have four switches, A, B, C, and D. Switch A is connected to Switch C and Switch B is connected to Switch D. Furthermore, Switch A and B are connected and Switch C and D are connected. One of the connections is in blocking mode. What protocol must be running on the switches?

Accepted Answer

The protocol that must be running on the switches is the Spanning Tree Protocol (STP), which is used to prevent loops and ensure redundancy in a network. One of the connections being in blocking mode indicates that STP has determined the best path for data to flow without causing a loop. RIP, SNMP, and NTP are all different protocols that serve different purposes and are not relevant to the given scenario.

Question 15

In general, what level of security should you use with your access points?

Accepted Answer

It is always recommended to use the most secure level of security that your systems support. This will ensure that your network and devices are properly protected and not vulnerable to attacks. Using an easier or less secure form of security can leave you open to potential security breaches and attacks.

Question 16

What command issued from a command prompt will display the routing table in Windows?

Accepted Answer

The command 'route print' is used to display the routing table in Windows. The other options 'route table', 'route delete', and 'route config' are not valid commands.

Question 17

Which of the following is NOT a function that would be found in a managed switch?

Accepted Answer

Transferring the switching table with neighboring switches is a function of a stacking switch, not a managed switch. Managed switches can perform the other functions listed.

Question 18

Which of the following is a common link-state routing protocol?

Accepted Answer

OSPF is a common link-state routing protocol, which is used to determine the shortest path for data packets in a network. RIPv2 and EIGRP are distance vector routing protocols, while BGP is a path vector routing protocol.

Question 19

All network switches require substantial configuration before they can be put into operation in a network.

Accepted Answer

While some network switches may require initial configuration, many modern switches are designed to be "plug-and-play", meaning they can be put into operation without requiring substantial configuration.

Question 20

A distance-vector protocol sends updates to its neighbors that include the contents of its routing table.

Accepted Answer

This is true for distance-vector protocols like RIP and EIGRP, which send periodic updates containing the entire routing table to neighboring routers.

Quiz 8: Network Hardware in Depth