[多项选择]Which two statements are true about TCP communication?（）
A. The receiver acknowledges the final packet in each communications stream.
B. The receiver adds sequencing numbers to the packets received.
C. The sender adds sequencing numbers to the packets it sends.
D. The receiver acknowledges each packet it receives from the sending device.

[单项选择]Which of the following statements about communication by touch is true
A. Touch is not important as a means of communication.
B. There is no well-developed system of communication based on touch.
C. It is possible to communicate intelligently by touch alone.
D. Touch must accompany visual communication.

[多项选择]Which two statements are true about precedence values in policy?（） (Choose two.)
A. 1 is the default precedence.
B. A lower number is preferred.
C. A higher number is preferred.
D. 100 is the default precedence.

[多项选择]Which two statements are true about the duplexing of the backups taken by RMAN? （）(Choose two.)
A. It's only supported for the backups performed on the tape
B. It is not supported for backup operations that produce image copies
C. Duplex backups need a parallelism for the device to be equal to number of copies
D. Duplex backups can be performed to either disk or tape, but cannot be performed on tape and disk simultaneously

[多项选择]Which two statements are true about static routes in the Junos OS?（）
A. Static routes are defined at the [edit routing-instances] hierarchy.
B. Static routes must have a next hop defined.
C. Static routes remain in the routing table until you remove them or until they become inactive.
D. Static routes are learned by neighboring devices and added to their routing tables.

[多项选择]Which two statements are true about firewall filter configurations?（）
A. Multiple action modifiers can be included in the same term.
B. Only a single action modifier can be included in the same term.
C. The default term within a firewall filter uses the discard action.
D. The default term within a firewall filter uses the reject action.

[多项选择]Which two statements are true about the forwarding table?（）
A. The forwarding table lists each source protocol and preference for each destination.
B. The forwarding table contains only active routes.
C. The forwarding table is used to process transit packets.
D. The forwarding table is stored in compact flash.

[多项选择]Which two statements are true about the rendezvous poin t (RP) in a multicast network?（）
A. The multicast sources must register with the RP to form the multicast distribution tree.
B. An RP is required only in networks running Protocol Independent Multicast dense mode (PIM DM).
C. The multicast receivers must register with the RP to form the multicast distribution tree.
D. An RP is required only in networks running Protocol Independent Multicast sparse mode (PIM SM).
E. An RP is required only in networks running Protocol Independent Multicast sparse - dense mode (PIM - SDM).
F. To form the multicast distribution tree, the multicast sources register with and the receivers join the RP.

[多项选择]Which two statements are true about optical networks?（）
A. SONET and SDH both use time-division multiplexing.
B. An optical transport network system uses time-division multiplexing.
C. SONET and SDH both use wavelength-division multiplexing.
D. An optical transport network system uses wavelength-division multiplexing.

[多项选择]Which two statements are true about applying Host Checker at the realm level?（）
A. If Evaluate is checked then the client must pass policy to get the sign-in page.
B. If Evaluate is checked then the client can fail policy and still get the sign-in page.
C. If Require and Enforce is checked then the client must pass policy to get the sign-in page.
D. If Require and Enforce is checked then the client can fail policy and still get the sign-in page.

[多项选择]Which two statements are true about variable extent size support for large ASM files?（）
A. The metadata used to track extents in SGA is reduced.
B. Rebalance operations are completed faster than with a fixed extent size
C. An ASM Instance automatically allocates an appropriate extent size.
D. Resync operations are completed faster when a disk comes online after being taken offline.
E. Performance improves in a stretch cluster configuration by reading from a local copy of an extent.

[多项选择]Which two statements are true about Internet Group Management Protocol (IGMP) snooping?（）
A. IGMP snooping and Cisco Group Membership Protocol (CGMP) can be used simultaneously on a switch.
B. IGMP snooping a nd Cisco Group Membership Protocol (CGMP) were developed to help Layer 3 switches make intelligent forwarding decisions on their own.
C. IGMP snooping examines IGMP join/leave messages so that multicast traffic is forwarded only to hosts that sent an IG MP message toward the router.
D. IGMP snooping is an IP multicast constraining mechanism for Layer 2 switches.
E. IGMP snooping is enabled with the ip multicast - routing global configuration command.

[多项选择]Which two statements are true about encrypting RMAN backup?（）
A. The transparent encryption of backups uses the encryption wallet
B. The database uses the same encryption key for every encrypted backup
C. The password encryption of backups only uses the password while creating and restoring backup
D. If transparent encryption is configured, you cannot use the SET ENCRYPTION BY PASSWORD command to make password-protected backups.

[多项选择]Which two statements are true about IBGP neighbor relationships?（）
A. The BGP split - horizon rule specifies that routes learned via EBGP are never propagated to other IBGP peers.
B. The BGP split horizon rule specifies that routes learned via IBGP are never propagated to other IBGP peers.
C. A full - mesh IBGP requires that neighbor relationships be established between a ll BGP enabled routers in the autonomous system.
D. IBGP neighbors must be in different autonomous systems.
E. An EGP or static routing is required between IBGP neighbors.

[多项选择]Which two statements are true about the relationship between static NAT and proxy ARP? （）(Choose two.)
A. It is necessary to forward ARP requests to remote hosts.
B. It is necessary when translated traffic belongs to the same subnet as the ingress interface.
C. It is not automatic and you must configure it.
D. It is enabled by default and you do not need to configure it.

[多项选择]Which two statements are true about the Automatic Diagnostic Repository (ADR)?（）
A. The ADR base keeps all diagnostic information in binary format
B. SQL*Plus provides the ADRI script, which can be used to work with ADR
C. The ADR can be used for problem diagnosis only when the database is open
D. The ADR can be disabled by settting the DIAGNOSTIC_DEST parameter to null
E. The ADR can be used for problem diagnosis even when the database instance is down
F. The ADR base is shared across multiple instances