单选题Which statement is correct about logical units on Juniper Router interfaces?（）A Logical units are used only when a Layer 2 identifier is present such as a VLANB A logical unit of 0 is required when using a frame-relay DLCIC A logical unit is always req

第1题：

第2题：

Which three statements about the secure domain router are true？（）

• A、The logical router can span across chassis.
• B、The fabric and system controller module are shared by all logical routers.
• C、Each logical router has a distinct fabric and system controller module
• D、The logical router can share a route processor
• E、The logical router cannot share a route processor

第3题：

第4题：

Which of the following explains the relationship between a physical and logical partition?（）

• A、A physical partition is hosted on one or more logical partitions. A logical partition is used when describing storage.
• B、A logical partition is hosted on one or more physical partitions. A physical partition is used when describing storage.
• C、A physical partition is used when describing only a SCSI or SAS disk. A logical partition is used when describing a SAN LUN.
• D、A logical partition is used when describing only a SATA or SAS disk. A physical partition is used when describing RAID or mirrored arrays.

第5题：

Overlay Transport Virtualization （OTV） provides an overlay that enables Layer 2 connectivity between separate Layer 2 domains， while keeping these domains independent and preserving the fault isolation， resiliency， and load-balancing benefits of an IP-based interconnection. Which statements are true about OTV Adjacency Server？（）

• A、 Adjacency Server is required when OTV is deployed with unicast-only transport.
• B、 Adjacency Server is required when OTV is deployed with multicast-enabled transport.
• C、 Each OTV device wishing to join a specific OTV logical overlay needs to first register with the Adjacency Server.
• D、 Each OTV device trying to join a specific OTV logical overlay needs to be configured as an Adjacency Server.

第6题：

第7题：

Which statement is true about logical units?（）

• A、Logical units are similar to VLANs used by other vendors.
• B、A logical unit is required for transit interfaces.
• C、Frame Relay encapsulation supports one logical unit.
• D、Link speed and duplex are configured in the logical unit properties.

第8题：

第9题：

All of the following are attributes that can be specified when creating a logical volume EXCEPT:（）

• A、Number of logical partitions
• B、Disk where logical volume will reside
• C、Size of the logical volume control block
• D、Position of the logical volume on the disk

第10题：

A system administrator has backed up the datavg volume group using the savevg command. There are several raw logical volumes and some unmounted jfs filesystems in datavg. Which of the following statements is true about this backup?（）

• A、The volume group and all logical volumes will be recreated. All raw and jfs filesystms will be backed up and restored.
• B、This backup will be bootable and the volume group and all jfs logical volumes will be recreated.
• C、This backup will not be bootable and the restorevg command is used to restore only the mounted and non-raw logical volumes. It will not recreate any logical volumes that are raw or unmounted.
• D、The volume group and all logical volumes information is archived and will be recreated. The raw and unmounted filesystems will not be backed up and therefore not restored.