多项选择题

A.A received IP packet is forwarded based on the IP des……

If an edge Label Switch Router （LSR） is properly configured，which three combinations are possible？（）

A.A received IP packet is forwarded based on the IP destination address and the packet is sent as an IP packet.
B.An IP destination exists in the IP forwarding table. A received labeled packet is dropped because the label is not found in the LFIB table.
C.There is an MPLS label-switched path toward the destination. A received IP packet is dropped because the destination is not found in the IP forwarding table.
D.A received IP packet is forwarded based on the IP destination address and the packet is sent as a labeled packet.
E.A received labeled IP packet is forwarded based upon both the label and the IP address.
F.A received labeled packet is forwarded based on the label. After the label is swapped，the newly labeled packet is sent.

<上一题目录下一题>

热门试题

单项选择题Whatarethefoursteps，intheircorrectorder，tomitigateawormattack？（）

A.contain，inoculate，quarantine，and treat
B.inoculate，contain，quarantine，and treat
C.quarantine，contain，inoculate，and treat
D.preparation，identification，traceback，and postmortem
E.preparation，classification，reaction，and treat
F.identification，inoculation，postmortem，and reaction

多项选择题Whichtwonetworkattackstatementsaretrue？（）

A.Access attacks can consist of password attacks，trust exploitation，port redirection，and man-in-the-middle attacks.
B.Access attacks can consist of UDP and TCP SYN flooding，ICMP echo-request floods，and ICMP directed broadcasts.
C.DoS attacks can be reduced through the use of access control configuration，encryption，and RFC 2827 filtering.
D.DoS attacks can consist of IP spoofing and DDoS attacks.
E.IP spoofing can be reduced through the use of policy-based routing.
F.IP spoofing exploits known vulnerabilities in authentication services， FTP services，and web services to gain entry to web accounts，confidential databases，and other sensitive information.

单项选择题Refer to the exhibit. What statement is true about the interface S1 0 on router R1？（）

A.Labeled packets can be sent over an interface.
B.MPLS Layer 2 negotiations have occurred.
C.IP label switching has been disabled on this interface.
D.None of the MPLS protocols have been configured on the interface.

多项选择题WhichtwostatementsdescribethefunctionsandoperationsofIDSandIPSsystems？（）

A.A network administrator entering a wrong password would generate a true-negative alarm.
B.A false positive alarm is generated when an IDS/IPS signature is correctly identified.
C.An IDS is significantly more advanced over IPS because of its ability to prevent network attacks.
D.Cisco IDS works inline and stops attacks before they enter the network.
E.Cisco IPS taps the network traffic and responds after an attack.
F.Profile-based intrusion detection is also known as "anomaly detection".

多项选择题Whichtwostatementsaboutcommonnetworkattacksaretrue？（）

A.Access attacks can consist of password attacks，trust exploitation，port redirection，and man-in-the-middle attacks.
B.Access attacks can consist of password attacks，ping sweeps，port scans，and man-in-the-middle attacks.
C.Access attacks can consist of packet sniffers，ping sweeps，port scans，and man-in-the-middle attacks.
D.Reconnaissance attacks can consist of password attacks，trust exploitation，port redirection and Internet information queries.
E.Reconnaissance attacks can consist of packet sniffers，port scans，ping sweeps，and Internet information queries.
F.Reconnaissance attacks can consist of ping sweeps，port scans，man-in-middle attacks and Internet information queries.