WorksheetsKisi-Kisi Sumatif Akhir Sekolah TKJ Kelas XI Semester 1
Total questions: 30
Worksheet time: 15mins
Choose the single best answer. The network topology in which every device connects to one main cable (backbone) is called the topology.
Bus
Star
Ring
Mesh
Choose the single best answer. The cabling standard used to directly connect two like devices (for example, PC to PC) is.
Straight-through
Crossover
Rollover
Coaxial
Choose the single best answer. In the OSI model, the layer responsible for defining IP addressing is.
Data Link layer
Network layer
Transport layer
Application layer
Choose the single best answer. The network device that connects two or more networks with different IP segments is.
Hub
Switch
Router
Repeater
Choose the single best answer. In IPv4 addressing, the IP address 192.168.1.1 belongs to class.
Class A
Class B
Class C
Class D
Choose the single best answer. The main difference between a Hub and a Switch is in.
Number of ports available
Frame forwarding mechanism based on MAC addresses
Type of cables supported
Physical size of the device
Choose the single best answer. The primary benefit of applying subnetting in computer networks is.
Improves security and efficient IP address utilization
Speeds up the computer’s CPU
Reduces file sizes on disk
Enhances video quality
Choose the single best answer. Wireless networks using IEEE 802.11g typically operate at the frequency.
900 MHz
2.4 GHz
5 GHz
60 GHz
Choose the single best answer. The transmission medium that uses light to send data and is immune to electromagnetic interference is.
Twisted-pair copper
Coaxial cable
Fiber-optic cable
Radio waves
Choose the single best answer. What is the maximum number of usable hosts in a subnet with netmask /27?
14
30
62
126
Choose the single best answer. A computer has IP address 172.16.5.10 /26. The network address of this subnet is.
172.16.5.0
172.16.5.64
172.16.5.128
172.16.5.192
Choose the single best answer. A technician needs 50 hosts in one subnet. Which subnet mask is most efficient to use?
/28
/27
/26
/25
Choose the single best answer. Given IP address 192.168.10.50 with subnet mask 255.255.255.240, the broadcast address is.
192.168.10.47
192.168.10.63
192.168.10.64
192.168.10.79
Choose the single best answer. A small office with 15 employees often experiences collisions and slow network performance. Which network device is most appropriate to replace the existing Hub?
Modem
Switch
Router
Wireless access point
Choose the single best answer. You need to connect two buildings 5 km apart with high data-transfer speed. Which cable type and topology are most suitable?
UTP with bus topology
Coaxial cable with ring topology
Fiber-optic cable with point-to-point topology
UTP with star topology
Select all correct answers. What are the main advantages of using a wired network compared to a wireless network?
Higher reliability and consistent performance
Lower latency for data transmission
Greater security from over‑the‑air eavesdropping by default
Improved mobility without physical cabling
Less susceptible to radio interference
Select all correct answers. Which items are disadvantages of wireless networks?
Signal interference from walls, devices, or other networks
Limited range that diminishes with obstacles
Greater exposure to unauthorized access if not secured properly
Requires extensive physical cabling between endpoints
Speed can drop as distance from the access point increases
Select all correct answers. In a star topology, which central device and common transmission medium are typically used?
Network switch as the central device
Hub as the central device
Twisted‑pair Ethernet (UTP) as the primary medium
Coaxial cable as the primary medium
Wireless access point as the central device
Select all correct answers. Straight‑through Ethernet cables are used in which connection scenarios?
Computer to network switch
Router to network switch
Computer to hub
Computer to computer without auto‑MDI/MDI‑X
Router to computer without auto‑MDI/MDI‑X
Select all correct answers. Which factors affect Wi‑Fi access point signal quality and coverage?
Transmit power settings of the access point
Antenna type, orientation, and gain
Channel selection and interference on the frequency band
Physical obstacles and building materials in the environment
Display resolution of connected client devices
Answer as a multiple‑choice item. A company needs 6 subnets from a single /24 network. Which subnet mask is most appropriate, and what are the network and broadcast addresses of the third subnet when the base network is 192.168.1.0/24?
Subnet mask 255.255.255.192; third subnet network 192.168.1.128, broadcast 192.168.1.191
Subnet mask 255.255.255.224; third subnet network 192.168.1.64, broadcast 192.168.1.95
Subnet mask 255.255.255.240; third subnet network 192.168.1.48, broadcast 192.168.1.63
Subnet mask 255.255.255.248; third subnet network 192.168.1.24, broadcast 192.168.1.31
Select all correct answers. On Windows, which steps are required to configure a static IP address so the computer connects to a local network?
Open Network & Internet settings, edit adapter properties, and set a static IPv4 address, subnet mask, default gateway, and DNS servers
Assign an IP address that is within the LAN’s subnet and not already in use
Disable DHCP client service so the static configuration is applied
Restart the network adapter or renew interface to apply settings
Only change the computer name; IP configuration is not required
Explain the fundamental differences between the wireless security standards WEP and WPA2, and why WPA2 is the recommended standard today. Select all statements that are correct.
WEP uses RC4 with a short, reused initialization vector and static keys, making it vulnerable to key‑recovery attacks.
WPA2 uses AES‑CCMP with strong integrity protection and modern key management, greatly improving security over WEP.
WEP provides robust encryption through AES‑CCMP and mutual authentication by default.
WPA2 supports 802.1X/Enterprise to issue dynamic, per‑session keys that mitigate key reuse.
WEP rotates per‑packet keys using OFDMA and MU‑MIMO to resist eavesdropping in dense environments.
Analyze and compare two main advantages of Fiber Optic and Wireless (802.11ax) for delivering high‑speed internet in urban areas. Which option correctly identifies a key advantage of each technology?
Fiber Optic: very high bandwidth and immunity to electromagnetic interference; 802.11ax: high spectral efficiency with OFDMA/MU‑MIMO for dense deployments.
Fiber Optic: relies on shared radio channels to reduce cabling costs; 802.11ax: limited by copper attenuation over long distances.
Fiber Optic: susceptible to electrical noise but easy to splice with twisted pairs; 802.11ax: primarily increases speed by widening cable diameter.
Fiber Optic: optimized for short hops using CSMA/CD; 802.11ax: replaces switches to eliminate wired infrastructure.
A network administrator needs to connect 50 computers in one LAN and wants the device to filter traffic and minimize collisions. Which device should be used, and why?
Hub, because it repeats frames to all ports and ensures simple broadcast connectivity.
Switch, because it forwards frames based on MAC addresses, creates separate collision domains per port, and filters unnecessary traffic.
Router, because it connects different IP networks and broadcasts frames to reduce collisions.
Access point, because it concentrates all wired segments and uses CSMA/CD to prevent collisions.
Subnetting. Given network 192.168.1.0 with subnet mask /29 (block size 8), identify the subnet mask and the Network/Broadcast Address of the third subnet.
Subnet mask 255.255.255.248; Network 192.168.1.16; Broadcast 192.168.1.23
Subnet mask 255.255.255.240; Network 192.168.1.24; Broadcast 192.168.1.31
Subnet mask 255.255.255.248; Network 192.168.1.24; Broadcast 192.168.1.31
Subnet mask 255.255.255.252; Network 192.168.1.16; Broadcast 192.168.1.19
Subnetting. For a /29 subnet, determine the block size in host addresses per subnet.
8
4
16
32
Konfigurasi IP. Choose the correct ordered steps to set a static IPv4 address in Windows: open the appropriate settings, navigate to the adapter’s properties, select IPv4, enable manual IP, and enter IP, Subnet Mask, and Gateway.
Settings/Control Panel → Network and Sharing Center → Change Adapter Settings → Properties of the adapter → TCP/IPv4 → Use the following IP address → enter IP, Subnet Mask, Gateway
Open Command Prompt → ipconfig /all → Select adapter → TCP/IPv4 → Use DHCP → enter IP, Subnet Mask, Gateway
Settings/Control Panel → Device Manager → Network adapters → TCP/IPv6 → Automatic → enter IP, Subnet Mask, Gateway
Network and Sharing Center → Internet Options → LAN settings → TCP/IPv4 → Obtain an IP address automatically
Keamanan Nirkabel. Select all statements that correctly describe differences between WEP and WPA2 and the reason WPA2 is recommended.
WEP uses static, short keys and weaker encryption.
WPA2 uses stronger algorithms such as AES and supports dynamic keys.
WPA2 is recommended because it provides a much higher security level and is harder to crack.
WEP relies on dynamic per-session keys similar to WPA2.
WPA2 is weaker than WEP but easier to configure.
Perbandingan Teknologi. In an urban-area context, which option best contrasts two main advantages of Fiber Optic (FO) versus Wireless 802.11ax?
FO: very low latency and high reliability; Wireless 802.11ax: high mobility and ease of deployment
FO: high mobility; Wireless 802.11ax: lowest latency
FO: easiest to deploy; Wireless 802.11ax: limited coverage
FO: dependent on radio frequency; Wireless 802.11ax: immune to interference
