Review Materi Wireless Router

WLAN stands for Wireless LAN. This term refers to a local area network that uses wireless communication technology to connect devices within a limited area, such as a home, office, or campus. Unlike a wired LAN, which requires physical cables to connect devices, a WLAN allows devices to connect wirelessly through radio waves or infrared signals. This technology provides flexibility and convenience for users, allowing them to access the network and the internet without being restricted by physical cables.

The correct answer is 802.11. This is the standard that is used to define WLAN (Wireless Local Area Network). It specifies the protocols and technologies that are used for wireless communication in local area networks. The 802.11 standard is commonly known as Wi-Fi and it provides high-speed wireless connectivity for devices such as laptops, smartphones, and tablets.

The correct answer is 802.11x. The other options listed (802.11, 802.11a, and 802.11g) are all valid standards for WLAN (Wireless Local Area Network). However, 802.11x is not a specific standard. It is often used as a placeholder or generic term to refer to any variant or extension of the 802.11 standard, such as 802.11b, 802.11n, or 802.11ac.

Gelombang radio digunakan untuk mentransmisikan data dari sumber ke tujuan dalam jaringan wireless LAN. Gelombang radio adalah sinyal elektromagnetik yang dapat dikirim melalui udara tanpa menggunakan kabel tembaga atau tegangan listrik. Dalam jaringan wireless LAN, data dikirim melalui gelombang radio yang ditangkap oleh antena pada perangkat wireless dan kemudian diterima oleh antena pada perangkat tujuan. Gelombang radio memungkinkan komunikasi nirkabel antara perangkat-perangkat dalam jaringan LAN tanpa harus terhubung dengan kabel fisik.

An Access Point is a device that connects clients to a network wirelessly. It acts as a central hub for wireless communication, allowing multiple devices to connect to the network simultaneously. Unlike a hub or switch, an Access Point is specifically designed for wireless connections and does not require any physical cables to connect clients to the network. Therefore, an Access Point is the correct answer for connecting clients to a network wirelessly.

The statement is true because SSID (Service Set Identifier) is a unique identifier that is used to differentiate client devices on a wireless network. It helps in distinguishing one wireless network from another and allows devices to connect to the correct network.

Higher frequency radio waves are more easily absorbed by obstacles such as walls, making 802.11a susceptible to poor performance due to interference.

The correct answer is 2.4 GHz. The question is asking about the frequency band used in 802.11n equipment. 802.11n is a Wi-Fi standard that operates in the 2.4 GHz frequency band. This frequency band is commonly used for Wi-Fi networks and offers good coverage and compatibility with a wide range of devices. The 5 GHz frequency band is also used in Wi-Fi networks, but it is associated with newer standards like 802.11ac and offers higher data transfer speeds but shorter range compared to the 2.4 GHz band.

Multiple access points on a network can indeed share the same SSID. This allows devices to seamlessly roam between different access points without needing to manually switch networks. By using the same SSID, devices can connect to the access point with the strongest signal or least congestion, enhancing the overall network performance and user experience.

The correct answer is 11 Mbps. The maximum data rate that can be accommodated on the 802.11b standard is 11 Mbps. This standard, also known as Wi-Fi 1, operates in the 2.4 GHz frequency range and uses direct-sequence spread spectrum (DSSS) modulation. It was one of the earliest Wi-Fi standards and provided a significant improvement over its predecessor, 802.11a, which had a maximum data rate of 2 Mbps. However, it has been largely replaced by newer standards like 802.11n and 802.11ac, which offer much higher data rates.

Setelah Node A mengirim RTS ke Node B, proses selanjutnya adalah Node B membalas dengan CTS. RTS (Request to Send) digunakan oleh Node A untuk meminta izin kepada Node B untuk mengirim data. Node B kemudian mengirimkan CTS (Clear to Send) sebagai balasan kepada Node A, yang menandakan bahwa Node B siap menerima data yang akan dikirim oleh Node A. Setelah menerima CTS, Node A dapat mengirim data ke Node B. Jadi, jawaban yang benar adalah Node B membalas dengan CTS.

The correct answer is 5 GHz. The 802.11a standard uses a frequency band of 5 GHz. This frequency band offers higher data rates and less interference compared to the 2.4 GHz band used by other standards like 802.11b/g. By operating in the 5 GHz band, 802.11a can provide faster and more reliable wireless connections.

The correct answer is DSSS. DSSS stands for Direct Sequence Spread Spectrum, which is a modulation technique used in the 802.11b standard. This technique spreads the signal over a wide frequency range using a pseudorandom code, making it more resistant to interference and improving the overall reliability of the wireless communication.

The International Organization for Standardization (ISO) is a global organization that develops and publishes international standards for various industries. It does not specifically focus on WLAN standards. On the other hand, ITU-R, IEEE, and Wi-Fi Alliance are organizations that play a significant role in influencing and developing WLAN standards.

Hidden node is not a form of network security threat. Unauthorized access, man in the middle attack, and denial of service are all common threats to wireless network security. Hidden node refers to a situation where a wireless node is unable to detect other nodes in the network due to physical obstacles or distance. While this can cause communication issues, it is not a deliberate security threat.

The correct order for the join process in wireless devices is Probing-Authentication-Association. First, the device sends out a probe request to search for available networks. Then, it goes through the authentication process to verify its identity with the network. Finally, it associates with the network by exchanging information and establishing a connection. This sequence ensures that the device finds and connects to the correct network securely.

The correct answer is BSA. In WLAN, the coverage area of a Basic Service Set (BSS) is known as BSA. BSS is a group of wireless devices that are connected to the same wireless network and can communicate with each other. BSA refers to the geographical area covered by this group of devices, such as a room, a building, or a specific location.

The statement that equipment on the 5 GHz band has better range than the 2.4 GHz band is false. In reality, the 2.4 GHz band has a better range compared to the 5 GHz band. This is because lower frequency signals, such as those in the 2.4 GHz band, can penetrate obstacles like walls more effectively, allowing for a wider coverage area. The higher frequency signals in the 5 GHz band, on the other hand, are more easily absorbed by obstacles, resulting in a shorter range.

The given answer "Pishing" is incorrect because it is a misspelling of the term "Phishing". Phishing refers to a type of cyber attack where attackers attempt to trick individuals into revealing sensitive information, such as passwords or credit card details, by disguising themselves as trustworthy entities. Unauthorized access to a wireless network can be performed by Hackers (Crackers), Employees, or War Drivers.

Adhoc mode allows two or more devices to communicate directly with each other without the need for an access point. In this mode, the devices form a temporary network, also known as an independent basic service set (IBSS). This type of network is useful in situations where there is no existing infrastructure or access point available, such as in ad hoc meetings or temporary setups.

The statement that the ACK signal sent by the destination node to the source node indicates that the destination node is ready to receive data is false. In the TCP/IP protocol, the ACK signal is sent by the destination node to acknowledge the successful receipt of data from the source node. It does not indicate the readiness of the destination node to receive data.

The statement that the CTS signal sent by the destination node to the source node is to inform that the destination node has received the data sent by the source node is false. The CTS signal, also known as Clear to Send, is a signal used in network communication protocols to indicate that the channel is clear and the sender can transmit data. It is not used to acknowledge the receipt of data.