Network Technologies Questions PDF

Here are some important questions and fill-in-the-blank questions to focus on for your exam based on this lecture content. **Important Short-Answer Questions** 1\. **What does RJ-45 stand for, and what is it used for?** RJ-45 stands for Registered Jack 45, and it is commonly used for Ethernet c...

Here are some important questions and fill-in-the-blank questions to focus on for your exam based on this lecture content. **Important Short-Answer Questions** 1\. **What does RJ-45 stand for, and what is it used for?** RJ-45 stands for Registered Jack 45, and it is commonly used for Ethernet connections. 2\. **Why are network protocols important?** Network protocols ensure effective communication between devices by defining how data is transmitted over a network. 3\. **What is the difference between bits and bytes?** Bits are the smallest unit of data, represented as 0 or 1, while a byte is a group of 8 bits. 4\. **What is the IEEE 802.3 standard?** IEEE 802.3 is the standard defining Ethernet for local area networks, established in 1983. 5\. **What are the types of Ethernet UTP cable standards, and how do they differ?** 10BASE-T uses 2 pairs, 100BASE-T uses 4 pairs, and 1000BASE-T uses all 4 pairs for higher speeds. 6\. **What is a straight-through cable used for?** It is used to connect different devices, such as a switch to a computer. 7\. **Explain the difference between single-mode and multimode fiber-optic cables.** Single-mode fiber has a narrow core, uses a single light mode, is suitable for longer distances, and is more expensive. Multimode fiber has a wider core, allows multiple light modes, is for shorter distances, and is less expensive. 8\. **List two advantages of fiber-optic cabling over UTP cabling.** Fiber-optic cabling has a longer maximum distance and is not vulnerable to EMI. **Fill-in-the-Blank Questions** 1\. **RJ-45** stands for **Registered Jack 45** and is commonly used for **Ethernet connections**. 2\. The **smallest unit of data** is a **bit**, represented as **0** or **1**. 3\. Ethernet is defined by the **IEEE 802.3** standard. 4\. **Unshielded Twisted Pair (UTP)** is used to protect against **electromagnetic interference (EMI)**. 5\. **Single-mode fiber** uses a **laser-based transmitter** and can cover longer distances than **multimode fiber**. 6\. A **straight-through cable** is used to connect **different devices** (e.g., switch to computer), while a **crossover cable** is used to connect **similar devices** (e.g., switch to switch). 7\. **Fiber-optic cables** have a **longer maximum distance** than UTP cables and are not vulnerable to **EMI**. 8\. The core of a **fiber-optic cable** is made of **fiberglass** and is surrounded by **cladding**, which reflects light.