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H3C GB0-191-ENU Exam Syllabus Topics:

H3C Constructing Small - and Medium - Sized Enterprise Network Sample Questions:

1. The correct statement about the STP protocol is ______. (Multiple choice)

A) The default priority value of the H3C Ethernet switch is 32768
B) The BridgeID value is a combination of the priority of the bridge and the MAC address of the bridge. The front is the priority, and the back is the MAC address.
C) The smaller the priority value, the lower the priority
D) The one with the higher BridgeID value will be selected as the root bridge
E) When the priority is the same, the smaller the MAC address, the higher the priority

2. A customer’s MSR router is connected to the Internet through the WAN interface S1/0, and to the office network through the LAN interface GE0/0. At present, office network users can access the Internet normally.
Add the following ACL configuration on the router:
firewall enable
firewall default deny
# acl number 3003
rule 0 deny icmp
rule 5 permit tcp destination-port eq 20
#
interface GigabitEthernet0/0
firewall packet-filter 3000 inbound
firewall packet-filter 3000 outbound
So ______ .

A) ICMP packets sent to the Internet initiated by office network users are prohibited by the router from passing
B) FTP traffic to the Internet initiated by the office network user is allowed to pass through the router, and all other packets are prohibited from passing through the router
C) Telnet packets initiated by office network users to reach the router GE0/0 can pass through normally
D) The FTP traffic initiated by the office network user to the router can pass through normally

3. It is the ______ of the OSI reference model that provides end-to-end reliable data transmission and flow control.

A) Session layer
B) Presentation layer
C) Transport layer
D) Network layer

4. The correct statement below is ______. (Multiple choice)

A) DSU (Data Service Unit): refers to a device used in digital transmission, which can adapt the physical layer interface on the DTE device to communication facilities such as T1 or E1. The data service unit is also responsible for signal timing and other functions. It is usually mentioned together with CSU and is called CSU/DSU.
B) DCE (Data Circuit Terminating Equipment, data communication equipment or data circuit terminal equipment) equipment and its connection with the communication network constitute the user network interface of the network terminal. It provides a physical connection to the network for forwarding traffic, and provides a clock signal for synchronizing data transmission between DCE equipment and DTE equipment.
C) CSU (Channel Service Unit): A digital interface device that connects end users with the local digital telephone loop. Usually it and DSU are collectively referred to as CSU/DSU. CSU equipment includes computers, protocol translators, and demultiplexers. DTE equipment includes these
D) DTE (Data Terminal Equipment, data terminal equipment) equipment refers to the equipment located at the user end of the user network interface, it can be used as a source, a sink, or both at the same time. Data terminal equipment is connected to a data network through a data communication device (for example, a modem), and usually uses a clock signal generated by the data communication device. Modems and interface cards are examples of DTE devices. Is an example of a DCE device

5. Xiao L is a senior IP network expert, determined to develop a new dynamic routing protocol. Which of the following should be included in the working process of a routing protocol? (multiple choice) (multiple choice)

A) Found neighbors
B) Maintain and update routing
C) Switch routing
D) Calculate route

Solutions: