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NEW QUESTION # 53
At the egress of an enterprise campus network, which of the following technologies can the administrator deploy to allow only specific private IP addresses to access the Internet?
Answer: C
Explanation:
At the enterprise campus network egress, the technology used to control which private IP addresses can access the Internet is NAT, typically combined with ACLs. NAT performs address translation for private IPs to public IPs and can be configured with policies to restrict which internal addresses are allowed to be translated and forwarded to the Internet. SSH, FTP, and AAA are not used for traffic forwarding control at the network egress.
NEW QUESTION # 54
Which of the following IP addresses cannot be configured for a host by default?
Answer: D
Explanation:
The address 224.0.0.1/24 cannot be configured as a normal host IP address by default because it belongs to the Class D multicast address range . IPv4 multicast addresses range from 224.0.0.0 to 239.255.255.255 and are reserved for multicast group communication rather than assignment to host interfaces as ordinary unicast addresses. Therefore, option D is correct.
The other three options are all private unicast address ranges and can be configured on hosts in private networks. 10.0.0.1/8 belongs to the 10.0.0.0/8 private range, 172.16.1.1/16 belongs to the 172.16.0.0/12 private range, and 192.168.1.1/24 belongs to the 192.168.0.0/16 private range. These are commonly used in enterprise and campus networks. HCIA-Datacom teaches that host IP address planning must distinguish between unicast, multicast, loopback, broadcast, and other special-purpose ranges. Multicast addresses identify multicast groups and are processed differently by hosts and network devices, so they are not valid default host addresses for ordinary end-to-end IP communication.
NEW QUESTION # 55
Four links between two switches establish an Eth-Trunk in manual mode, and the bandwidth of each link is 1 Gbit/s. One of the links fails. Which of the following statements are true about this scenario? (Select all that apply)
Answer: A,B
Explanation:
In an Eth-Trunk working in manual mode, multiple physical member links are bundled into one logical interface to provide higher bandwidth and link redundancy. If one of four 1 Gbit/s member links fails, the Eth-Trunk does not go down as long as at least one valid member link remains active. Therefore, statement A is correct. Since one link has failed and three member links remain available, the total available bandwidth becomes 3 Gbit/s, so statement B is also correct.
NEW QUESTION # 56
In the 802.11 standard, the 2.4 GHz frequency band is divided into 14 overlapping, staggered 20 MHz channels, numbered from 1 to 14.
Answer: A
Explanation:
The IEEE 802.11 channel plan for the 2.4 GHz ISM band defines channels numbered 1 through 14, with adjacent channel center frequencies separated by 5 MHz. Because a traditional 20 MHz Wi-Fi channel occupies substantially more spectrum than the 5 MHz center-frequency spacing, neighboring channels overlap. This is why WLAN planning normally uses a limited set of non-overlapping or minimally overlapping channels, such as 1, 6, and 11 in many regulatory domains. The fact that fourteen channel numbers exist in the standard does not mean that every country permits operation on every one of them.
Regulatory domains restrict the usable subset; for example, channel 14 is not generally available worldwide and has historically been associated with specific Japanese operation. Huawei APs apply the configured regulatory domain to determine which channels may actually be selected. The statement concerns the standard channelization itself rather than regional permission to use every channel. On that basis, the statement is TRUE and option A is correct.
NEW QUESTION # 57
R1 has two equal-cost routes to 10.0.12.0/24 after the following commands are configured.
[R1] ip route-static 10.0.12.0 24 10.0.12.2 preference 60
[R1] ip route-static 10.0.12.0 24 10.0.21.2 preference 60
Answer: B
Explanation:
The source key marks this statement TRUE, but the topology makes that answer technically incorrect. R1 is shown with interface address 10.0.12.1/24, which automatically installs a directly connected route to 10.0.12.0
/24. On Huawei VRP, a direct route has preference 0, whereas a static route has preference 60 unless another value is configured. The two commands do configure two static routes with the same preference, and equal- preference static routes can support load balancing when they are the best routes to a destination. Here, however, both static routes are for the same prefix that R1 already owns as a connected network. The direct route has a higher priority because its preference value is smaller, so it is selected in the active IP routing table instead of the two preference-60 static routes. Therefore the assertion that R1 has two active equal-cost routes to 10.0.12.0/24 is FALSE as the question and exhibit are written. The verified answer is B, and the original source key A should be corrected.
NEW QUESTION # 58
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