H12-211 : HCIA Routing & Switching : Part 21

H12-211 : HCIA Routing & Switching : Part 21

1. If the IPv4 address of a host on a local area network (LAN) is 192.168.1.1/30, which of the following destination IPv4 addresses can be carried in data packets that the host can decapsulate?

   • 192.168.1.1
   • 192.168.1.2 
   • 192.168.1.3
   • 255.255.255.255

2. Which of the following statements are true about the blackhole MAC address table?

   • Entries are manually configured and delivered to each interface card. The entries cannot be aged out.
   • After a device is reset, an interface card is hot swapped, or an interface card is reset, the saved entries on the device or interface card are not lost.
   • After a blackhole MAC address is configured on a device, the device discards packets whose source or destination MAC address is the blackhole MAC address. 
   • Blackhole MAC address entries can be used to filter out unauthorized users.

3. Which of the following fields exist in both IPv6 and IPv4 packet headers?

   • Source Address
   • Destination Address
   • Version
   • Next Header

4. Which of the following is/are the characteristic(s) of HDLC?

   • HDLC supports point-to-point links.
   • HDLC does not support IP address negotiation.
   • HDLC does not support authentication.
   • HDLC supports point-to-multipoint links.

5. Which of the following types of routes can be used by a router to establish a routing table?

   • Direct route 
   • Dynamic route
   • Static route 
   • Aggregated route

6. On the network shown in the figure, which of the following commands can be used to enable host A to successfully ping host B?

   

   • Router A : ip route-static 10.0.12.5 255.255.255.252 11.0.12.2
     Router B : ip route-static 10.0.12.1 255.255.255.252 11.0.12.1 
   • Router A : ip route-static 0.0.0.0 0.0.0.0 11.0.12.2
     Router B : ip route-static 0.0.0.0 0.0.0.0 11.0.12.1
   • Router A : ip route-static 0.0.0.0 0.0.0.0 11.0.12.1
     Router B : ip route-static 0.0.0.0 0.0.0.0 11.0.12.2
   • Router A : ip route-static 10.0.12.5 255.255.255.252 11.0.12.1
     Router B : ip route-static 10.0.12.1 255.255.255.252 11.0.12.2

7. Which of the following packets are OSPF packets?

   • HELLO
   • LSU
   • LSR
   • LSA

8. Which of the following port status may exist on an STP-enabled switch?

   • Forwarding
   • Listening
   • Discarding
   • Disabled

9. One of the reasons that segment routing (SR) is introduced is that traditional LDP has some restrictions.

   Which of the following statements about LDP restrictions are true?

   • LDP does not support automatic label allocation.
   • LDP supports path computation only based on IGP SPF (minimum cost), not based on traffic engineering.
   • LDP path computation depends on an IGP. If the IGP and LDP are not synchronized, black holes are generated, affecting services. 
   • LDP has 11 types of protocol packets, which greatly increases link bandwidth consumption and device CPU usage.

10. The following shows the command output on a router.

    Which of the following statements are true?

    display startup
    MainBoard:
    Startup system software: flash:/AR2220E-V200R007C00SPC600.cc
    Next startup system software: flash:/AR2220E-V200R007C00SPC600.cc
    Backup system software for next startup: null
    Startup saved-configuration file: flash:/vrpcfg.zip
    Next startup saved-configuration file: flash:/backup.zip
    Startup license file: null
    Next startup license file: null
    Startup patch package: null
    Next startup patch package: null
    Startup voice-files: null
    Next startup voice-files: null

    • The current VRP version file is the same as the VRP file for next startup.
    • The current VRP version file is different from the VRP file for next startup.
    • The current configuration file is the same as the configuration file for next startup. 
    • The current configuration file is different from the configuration file for next startup.

11. Which of the following statements about Ethernet sub-interfaces is/are true?

    • The sub-interface ID must be the same as the VLAN ID.
    • A sub-interface can be bound to multiple VLANs.
    • The sub-interface cannot be configured with an IP address. 
    • The IP addresses for sub-interfaces must not be on the same network segment.

12. Which of the following statements are true about the static MAC address table?

    • After a device is reset, an interface card is hot swapped, or an interface card is reset, the saved entries on the device or interface card are not lost. 
    • After an interface is statically bound to a MAC address, other interfaces discarded a packet whose source MAC address is the bound MAC address.
    • Each static MAC address entry can be bound only to one outbound interface.
    • You can check whether data is forwarded between two connected devices by checking the static MAC address entries.

13. On a network running Rapid Spanning Tree Protocol (RSTP), which of the following ports are in Discarding state when the topology is stable?

    • Root port
    • Designated port
    • Alternate port
    • Backup port