Đề thi chứng chỉ quốc tế nghề cơ bản về công nghệ mạng - Các câu hỏi cơ bản - Đề 2
Thông tin tài liệu:
Nội dung trích xuất từ tài liệu:
Đề thi chứng chỉ quốc tế nghề cơ bản về công nghệ mạng - Các câu hỏi cơ bản - Đề 2 CCNA – Basic Questions 2 Here you will find answers to Basic Questions – Part 2 Question 1 What are some of the advantages of using a router to segment the network? (Choose two) A. Filtering can occur based on Layer 3 information. B. Broadcasts are eliminated. C. Routers generally cost less than switches. D. Broadcasts are not forwarded across the router. E. Adding a router to the network decreases latency. Answer: A D Question 2 Which of the following statements describe the network shown in the graphic? (Choose two) A. There are two broadcast domains in the network. B. There are four broadcast domains in the network. C. There are six broadcast domains in the network. D. There are four collision domains in the network. E. There are five collision domains in the network. F. There are seven collision domains in the network. Answer: A F Explanation Only router can break up broadcast domains so in the exhibit there are 2 broadcast domains: from e0 interface to the left is a broadcast domain and from e1 interface to the right is another broadcast domain -> A is correct. Both router and switch can break up collision domains so there is only 1 collision domain on the left of the router (because hub doesn’t break up collision domain) and there are 6 collision domains on the right of the router (1 collision domain from e1 interface to the switch + 5 collision domains for 5 PCs in Production) -> F is correct. Question 3 Refer to the exhibit. The two connected ports on the switch are not turning orange or green. What would be the most effective steps to troubleshoot this physical layer problem? (Choose three) A. Ensure that the Ethernet encapsulations match on the interconnected router and switch ports. B. Ensure that cables A and B are straight-through cables. C. Ensure cable A is plugged into a trunk port. D. Ensure the switch has power. E. Reboot all of the devices. F. Reseat all cables. Answer: B D F Explanation The ports on the switch are not up indicating it is a layer 1 (physical) problem so we should check cable type, power and how they are plugged in. Question 4 For what two purposes does the Ethernet protocol use physical addresses? (Choose two) A. to uniquely identify devices at Layer 2 B. to allow communication with devices on a different network C. to differentiate a Layer 2 frame from a Layer 3 packet D. to establish a priority system to determine which device gets to transmit first E. to allow communication between different devices on the same network F. to allow detection of a remote device when its physical address is unknown Answer: A E Explanation Physical addresses or MAC addresses are used to identify devices at layer 2 -> A is correct. MAC addresses are only used to communicate on the same network. To communicate on different network we have to use Layer 3 addresses (IP addresses) -> B is not correct; E is correct. Layer 2 frame and Layer 3 packet can be recognized via headers. Layer 3 packet also contains physical address -> C is not correct. On Ethernet, each frame has the same priority to transmit by default -> D is not correct. All devices need a physical address to identify itself. If not, they can not communicate -> F is not correct. Question 5 Refer to the exhibit. Two buildings on the San Jose campus of a small company must be connected to use Ethernet with a bandwidth of at least 100 Mbps. The company is concerned about possible problems from voltage potential difference between the two buildings. Which media type should be used for the connection? A. UTP cable B. STP cable C. Coaxial cable D. Fiber optic cable Answer: D Explanation Because the company has problem about voltage potential difference between the two buildings so they should connect via fiber optic cable which uses light pulses to transmit information instead of using electronic pulses. Question 6 Which command can be used from a PC to verify the connectivity between host that connect through path? A. tracert address B. ping address C. arp address D. traceroute address Answer: A Explanation To check the connectivity between a host and a destination (through some networks) we can use both “tracert” and “ping” commands. But the difference between these 2 commands is the “tracert” command can display a list of near-side router interfaces in the path between the source and the destination. Therefore the best answer in this case is A – tracert address. Note: “traceroute” command has the same function of the “tracert” command but it is used on Cisco routers only, not on a PC. Question 7 Refer to the exhibit. A network engineer is troubleshooting an internet connectivity problem on the computer. What causing the problem? A. wrong DNS server B. wrong default gateway C. incorrect IP address D. incorrect subnet mask Answer: C Explanation The IP address of the PC (192.168.11.2/24) is not on the same network with its gateway 192.168.1.1 -> C is correct. Question 8 How many broadcast domains are shown in the graphic assuming only the default vlan is configured on the switches? A. one B. six C. twelve D. two Answer: A Explanation Only router can break up broadcast domains but in this exhibit no router is used so there is only 1 broadcast domain. For your information, there are 7 collision domains in this exhibit (6 collision domains between hubs & switches + 1 collision between the two switches). Question 9 Refer to the exhibit. PC> tracert 10.16.176.23 Tracing route to 10.16.176.23 over a maximum of 30 hops 1 31 ms 31 ms 32ms 172.16.182.1 2 62 ms 62 ms 62 ms 192.1681.6 3 93 ms 92 ms 34 ms 192.168.1.10 4 125 ms 110ms 125ms 10.16.176.23 Trace complete. Host A has tested connectivity to a remote network. What is the default gateway for host A? A. 172.16.182.1 B. 192.168.1.1 C. 10.16.176.1 D. 192.168.1.6 Answer: A Explanation It will li ...
Tìm kiếm theo từ khóa liên quan:
đề thi trắc nghiệm chứng chỉ nghề quốc tế CCNA các câu hỏi cơ bản về công nghệ mạng chứng chỉ nghề công nghệ mạng cơ bản đề thi chứng chỉ quốc tế mạng cơ bản đề thi chứng chỉ nghề CCNA đề thi chứng chỉ quốc tế CNNATài liệu cùng danh mục:
-
70 trang 358 0 0
-
61 trang 283 0 0
-
Tài liệu về Cấu Hình Switch Cơ Bản
9 trang 198 0 0 -
46 trang 175 0 0
-
Top 10 chứng chỉ CNTT quan trọng nhất hiện nay
6 trang 138 0 0 -
349 trang 121 0 0
-
Chứng chỉ quốc tế nào cần thiết cho các ứng viên CNTT
8 trang 120 0 0 -
Chapter 6 Inter – VLAN Routing
29 trang 120 0 0 -
BÀI 3. CÁC PHƯƠNG PHÁP KIỂM THỬ
24 trang 119 0 0 -
159 trang 112 0 0
Tài liệu mới:
-
Khảo sát tình trạng dinh dưỡng trước mổ ở người bệnh ung thư đại trực tràng
9 trang 20 0 0 -
94 trang 17 0 0
-
Tham vấn Thanh thiếu niên - ĐH Mở Bán công TP Hồ Chí Minh
276 trang 18 0 0 -
Kết hợp luân phiên sóng T và biến thiên nhịp tim trong tiên lượng bệnh nhân suy tim
10 trang 17 0 0 -
Đề thi giữa học kì 1 môn Ngữ văn lớp 9 năm 2024-2025 có đáp án - Trường THCS Nguyễn Trãi, Thanh Khê
14 trang 20 0 0 -
Đánh giá hiệu quả giải pháp phát triển thể chất cho sinh viên Trường Đại học Kiến trúc Hà Nội
8 trang 17 0 0 -
Tỉ lệ và các yếu tố liên quan đoạn chi dưới ở bệnh nhân đái tháo đường có loét chân
11 trang 18 0 0 -
39 trang 18 0 0
-
Đề thi học kì 1 môn Tiếng Anh lớp 6 năm 2024-2025 có đáp án - Trường TH&THCS Quang Trung, Hội An
6 trang 18 1 0 -
Tôm ram lá chanh vừa nhanh vừa dễRất dễ làm, nhanh gọn mà lại ngon. Nhà mình
7 trang 18 0 0