【单选题】
关于Measurement Gap描述错误的是（ ）。
A. EN-DC下，gap4～gap11可以用于支持Per-FR1？measurement？gap的UE
B. EN-DC下，网络可以配置？Per-UE？measurement？gap，也可以配置Per-FR？measurementgap
C. EN-DC下，支持per-UE？measurement？gap的UE，若同时用于NR和非NR邻区测量，可以用gap0～11
D. EN-DC下，LTE服务小区和NR服务小区(FR1)的同属于per FR1 measurement gap
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相关试题
【单选题】
5G网络关键性能指标中，高速移动性要求达到（ ）每小时。
A. 800KM
B. 100KM
C. 1000KM
D. 500KM
【单选题】
EN-DC情况下，UE的RRC状态是由（ ）决定的。
A. SCG
B. MCG
C. SN
D. MN
【单选题】
CDMA系统中的哪项关键技术是对抗多径效应的有效技术？ （ ）
A. 功率控制
B. 空间分集
C. 扩频通信
D. 软切换
【单选题】
CDMA手机停止异频搜索需要（ ）消息。
A. Candidate Frequency Search Control Message
B. Candidate Frequency Search Request Message
C. Candidate Frequency Search Report Message
D. Candidate Frequency Search Response Message
【单选题】
CDMA2000系统定义上行和下行都具备的信道为（ ）。
A. 同步信道
B. 导频信道
C. 业务信道
D. 寻呼信道
【单选题】
NFV的核心思想：软件和专业硬件解耦。（ ）
【单选题】
以下说法正确的是：（ ）
A. 频率增加，穿透损耗减小
B. 频率增加，穿透损耗增大
C. 频率增加，传播距离越远
D. 频率增加，绕射能力增强
【单选题】
下列关于天线的描述不正确的是： （ ）
A. 天线是能量转换装置
B. 天线是由一系列半波振子组成的
C. 天线是双向器件
D. 天线增益越高，主瓣越小，旁瓣越大
【单选题】
SDN的核心是：（ ）
A. 自动化
B. 控制与转发分离
C. 可编程性
D. 开发性
【单选题】
VoLTE呼叫空口及S1口信令流程(非SIP)的呼叫信令流程一般指的是主被叫UE都处于()态，这也是现网中最常见的呼叫应用场景。
A. RRC_DETACH
B. RRC_ATTACH
C. RRC_CONNECTED
D. RRC_IDLE
【单选题】
一个10W的功率信号，经过一个6dB衰减器之后,功率为（ ）。
A. 4W
B. 10W
C. 5W
D. 2.5W。
【单选题】
一般来说，射频同轴电缆线径越细，其单位长度最大损耗（ ）。
A. 越小
B. 越大
C. 基本不变
D. 不确定
【单选题】
以下哪些是EPC核心网网元SGW的功能?( )
A. SAE网络用户数据管理网元，提供鉴权和签约等功能，包含HLR功能；
B. SAE网络的边界网关，提供承载控制、计费、地址分配和非3GPP接入等功能，相当于传统的GGSN；
C. 负责无线资源管理，集成了部分类似2G、3G基站和基站控制器的功能；
D. LTE接入下的控制面网元，负责移动性管理功能
【单选题】
LTE FDD中，A3事件是指（ ）。
A. 服务小区差于门限
B. 服务区小区好于门限
C. 邻区好于服务小区一个偏置
D. 服务小区差于门限1，且邻区好于门限2
【单选题】
在LTE空口上使用以下哪个选项来标识UE？（ ）
A. IMSI
B. S-TMSI
C. C-RNTI
D. UE-RNTI
【单选题】
LTE中采用CP（Cyclic Prefix）的主要目的是( )。
A. 可以抵抗多径带来的ISI和ICI
B. 可以提高峰值速率
C. 可以减小系统时延
D. 可以降低PAPR
【单选题】
对于VOIP而言，一个20M小区最多可以调度( )用户
A. RLC rate = MAC rate×80%
B. RLC rate = MAC rate×90%
C. RLC rate = MAC rate×70%
D. RLC rate = MAC rate×60%
【单选题】
在对路测数据的分析操作中，（ ）一个很重要的功能，通过该功能，分析人员可以再现路测时的情况，帮助分析无线网络中存在的问题。
A. 数据合并
B. 回放
C. 切换数据流
D. 分析数据
【单选题】
TM7的应用场景是：( )。
A. 主要应用于单天线传输的场合
B. 主要用来提高小区的容量
C. 单流Beamforming，主要针对小区边缘，能够有效对抗干扰
D. 适合于小区边缘信道情况比较复杂，干扰较大的情况，有时候也用于高速的情况
【单选题】
下列哪个上行物理信道/信号可以同时承载HARQ和SRI（调度请求指示）信息( )。
A. PUCCH
B. PRACH
C. SRS
D. PUSCH
【单选题】
设置PDCCH信道是否使用发射分集的参数是（ ）
A. Transmit Diversity Indicator for Common Channel
B. Cell Open-loop Spatial Multiplexing Used Indicator
C. Cell transmit Diversity Used Indicator
D. Cell Closed-loop Spatial Multiplexing Used Indicator
【单选题】
对E-RAB Drop Rate的统计哪个计算方式是正确的？（ ）
A. Number of abnormally setup E-RAB / Number of successfully established E-RAB x 100%
B. Number of normally released E-RAB / Number of successfully established E-RAB x 100%
C. Number of abnormally released E-RAB / Number of successfully established E-RAB x 100%
D. 以上都不对
【单选题】
在4G网络中，下面哪个条件会触发TA更新？( )
A. TA定时周期超时
B. UE进入一个不在TA列表中的小区
C. 在UE的NAS信令中出现RRC连接错误
D. 以上所有选项
【单选题】
LTE的UE的小区重选的参数中，属于邻区关系参数的是：( )。
A. sintraSearch
B. qHyst
C. threshServingLow
D. qOffsetCell
【单选题】
TTI bundling 也称为子帧捆绑，是 LTE 系统中一种特殊的调度方式，它是针对处于小区边缘的 VoIP 用户而设计的。TTI bundling 仅用于( )
A. 下行
B. 上行
C. 上下行均用
D. 以上都不对
【单选题】
在LTE/EPC网络中，UE附着成功后移动性管理的状态是：( )。
A. ECMConnected
B. EMMRegistered
C. ECMActive
D. EMMDeregistered
【单选题】
AMR-WB编码帧长（ ）。
A. 10ms
B. 20ms
C. 40ms
D. 30ms
【单选题】
Handover流程是用户在哪个状态下进行的？( )
A. IDLE态
B. 连接状态
C. 任何状态
D. DEREGISTERED态
【单选题】
LTE载波聚合中的载波激活和去激活操作是通过( )层信令完成。
A. ?MAC
B. ?PHY
C. ?RLC
D. ?RRC
【单选题】
LTE优化初期我们对RSRP的覆盖要求应该是：RSRP大于等于-105dBm的采样点占所有采样点的比例应大于( )。
A. 0.9
B. 0.85
C. 0.95
D. 0.98
【单选题】
如果发起IMSI attach时，UE A的IMSI与另外一个UE B的IMSI重复，并且UE B已经attach，则核心网会（ ）
A. 拒绝UE A的attach，释放UE B的attach
B. 允许UE A的attach，释放UE B的attach
C. 允许UE A的attach，不释放UE B的attach
D. 拒绝UE A的attach，不释放UE B的attach
【单选题】
下列哪个不属于RRC_CONNECTED状态特征。（ ）
A. NAS配置UE指定的DRX
B. 网络控制移动性过程，例如切换
C. 邻区测量
D. E-UTRAN中存在UE的上下文
【单选题】
MGCF的主要功能是( )。
A. 完成IMS与PSTN及CS域用户面宽窄带承载互通及必要的Codec编解码变换
B. 为IMS到PSTN/CS的呼叫选择BGCF
C. 支持ISUP/BICC与SIP的协议交互及呼叫互通
D. 控制MRFP上的媒体资源
【单选题】
对于过覆盖优化，我们通常采取（）式，此举一来可以抑制过覆盖，同样也可以缓解灯下黑的状况。
A. 压下倾角
B. 更换波瓣宽度较大的天线
C. 抬下倾角
D. 增加发射功率
【单选题】
VoLTE的会话控制使用的是（ ）协议，而语音帧采用（ ）协议进行封装。
A. RTP, SIP
B. SIP,RTP
C. SDP, SIP
D. SIP, SDP
【单选题】
以下哪个场景下完成TAU后核心网会释放NAS信令连接？（ ）
A. IDLE态下发起的TAU，Active flag=1
B. IDLE态下发起的TAU，Active flag=0
C. CONNECTED下发起的TAU，Active flag=0
D. CONNECTED下发起的TAU，Active flag=1
【单选题】
有关UE完成初始化附着过程中，说法不正确的是（ ）
A. MME为UE建立默认承载
B. UE与MME建立MM上下文
C. UE获得网络侧分配的IP地址
D. UE一定要携带APN
【单选题】
在SIP协议中，INVITE消息的后续请求消息，除了不再经过I-CSCF外，是根据( )来沿首次请求的路径发送
A. Contact字段
B. Record-Route字段
C. Via字段
D. To字段
【单选题】
LTE的调度周期是多少？( )
A. 20ms
B. 40ms
C. 2ms
D. 1ms
推荐试题
【单选题】
On an ASA， which maps are used to identify traffic？___
A. Route maps
B. Policy maps
C. Class maps
D. Service maps
【单选题】
Which type of social engineering attack targets top executives？___
A. whaling
B. vishin
C. spear phishing ng
D. baiting
【单选题】
What is the minimum Cisco lOS version that supports zone-based firewalls？___
A. 12.1T
B. 15.1
C. 15.0
D. 124
【单选题】
In which type of attack does an attacker overwrite an entry in the CAM table to divert traffic destined to a legitimate host？___
A. DHCP spoofing
B. ARP spoofing
C. CAM table overflow
D. MAC spoofing
【多选题】
Which two attack types can be prevented with the impleme ntation of a Cisco IPS solution？___
A. DDos
B. man-in-the-middle
C. worms
D. ARP spoofing
E. VLAN hopping
【多选题】
choose four___
A. DHCP snooping ——————————blocks DHCP messages
B. Dynamic ARP inspection——————verifies IP-to-MAC traffic on untrusted ports
C. IP sources guard ——————————provides layer 2 interface security with ports ACLs
D. Port security————————————mitigates MAC-address spoofing at the access interface
【多选题】
choose four___
A. Step1————————run the system setup wizard
B. Step2————————add an authentication realm
C. Step3————————configure identity management
D. Step4————————configure directory group
【多选题】
What are two advanced features of the Cisco AMp solution for endpoints ___
A. contemplation
B. foresight
C. sandboxing
D. reputation
E. reflection
【多选题】
Which two characteristics of RADIUS are true？___
A. It encrypts only the password between user and server.
B. It uses TCP ports 1812/1813
C. It uses UDP ports 1812/1813.
D. It uses UDP port 49
E. It uses TCP port 49
【多选题】
What are two challenges of using a network-based IPS？ ___
A. It is unable to determine whether a detected attack was successful
B. It requires additional storage and proce ssor capacity on syslog servers
C. As the network expands， it requires you to add more sensors.
D. It is unable to detect attacks across the entire network
E. It must support multiple operating systems.
【多选题】
What are two default be haviors of the traffic on a zone-based firewall？___
A. Traffic within the self -zone uses an im plicit deny all.
B. All traffic between zones is implicitly blocked
C. Communication is allowed between interfadAss that are members of the same zone
D. Communication is blocked between interfaces that are members of the same zone
E. The CBAC rules that are configured on router interfaces apply to zone interfaces
【多选题】
Which two advantages does the on-premise model for MDM deployment have over the cloud-based model？___
A. The on-premise model is easier and faster to de ploy than the cloud-based model
B. The on-premise model is more scalable than the cloud-based model
C. The on-premise model is generally less expensive than the cloud-based model
D. The on-premise model generally has less latency than the cloud- based model.
E. The on-premise model provides more control of the MDM solution than the cloud
【多选题】
Which two actions can an end usts take to manage a lost or stolen device in Cisco ISE？ ___
A. Activate Cisco ISE End point Protection Services to quarantine the device.
B. Add the mac address of the device to a list of blacklisted devices
C. Force the device to be locked with a PIN
D. Request revocation of the digital certificate of the device.
E. Reinstate a device that the user previously marked as lost or stolen
【多选题】
Which two problems can arise when a proxy firewall serves as the gateway between networks？___
A. It can prevent content caching
B. It can limit application support
C. It is unable to prevent direct connections to other networks
D. It can cause reduced throughput.
E. It is unable to provide antivirus protection
【多选题】
When using the Adaptive Security Device Manager（ASDM）， which two methods are available to add a new root certificate？___
A. Use sCep
B. Install from SFTP server
C. Install from a file
D. Use Https
E. Use LDAP
【多选题】
Which two are considered basic security principles？___
A. Accountability
B. Redundancy
C. High Availabilit
D. Integrity
E. Confidentiality
【多选题】
Which two roles of the Cisco WSA are true？___
A. IPS
B. firewall
C. antispam
D. web proxy
E. URL filter
【单选题】
Which next-generation encryption algorithm supports four variants？___
A. SHA-2
B. SHA-1
C. MD5
D. HMAC
【单选题】
What aims to remove the abil ity to deny an action？___
A. Non-Repudiation
B. Accountability
C. Integrity
D. Deniability
【单选题】
Which statements about the native VLAN is true ？___
A. It is susceptible to VLAN hopping attacks.
B. It is the Cisco recommended VLAN for switch-management traffic
C. It is most secure when it is a ssigned to vLAn 1.
D. It is the cisco-recomme nded vlan for user traffic
【单选题】
There are two versions of IKE:IKEv1 and IKEv2. Both IKEv1 and IKEv2 protocols operate in phases IKEv1 operates in two phases. IKEv2 operates in how many phases？___
【单选题】
What does the dh group refer to？___
A. length of key for hashing C
B. length of key for encryption
C. tunnel lifetime key
D. length of key for key exchange
E. length of key for authentication
【单选题】
Which path do you follow to enable aaa through the SDM ？___
A. Configure Tasks > AAA
B. Configure > Addition Authentication > AAA
C. Configure > AAA
D. Configure > Additional Tasks > AAA
E. Configure Authentication > AAA
【单选题】
which technology cloud be used on top of an MPLS VPN to add confidentiality ？___
A. IPsec
B. 3DES
C. AES
D. SSL
【单选题】
Which term is most closely aligned with the basic purpose of a SIEM solution? ___
A. Non-Repudiation
B. Accountability
C. Causality
D. Repudiation
【单选题】
You have just deployed SNMPv3 in your environment， Your manager asks you to make sure that our SNMP agents can only talk to the SNMP Manager. What would you configure on your SNMI agents to satisfy this request？___
A. A SNMP View containing the SNMP managers
B. Routing Filter with the SNMP managers in it applied outbound
C. A standard ACL containing the SNMP managers applied to the SNMP configuration
D. A SNMP Group containing the SNMP managers
【单选题】
Which feature prevents loops by moving a nontrunking port into an errdisable state when a BPDU is received on that port？___
A. BPDU filte
B. DHCP snooping
C. BPDU guard
D. Port Fast
【单选题】
Which command enables port security to use sticky MAC addresses on a switch？___
A. switchport port-security violation restrict
B. switchport port-security mac-address sticky
C. switchport port-security violation protect
D. switchport port-security
【单选题】
When you edit an IPS subsignature， what is the effect on the parent signature and the family of subsignatures？___
A. The change applies to the parent signature and the entire family of subsignatures
B. The change applies to the parent signature and the subsignature that you edit
C. The change applies only to subsignatures that are numbered sequentially after the subsignature that you edit
D. Other signatures are unaffected， the change applies only to the subsignature that you dit
【单选题】
Which type of mechanism does Cisco FirePOWER de ploy to protect ag detected moving across other networks？___
A. antivirus scanning
B. policy-based
C. reputation-based
D. signature-based
【单选题】
What action must you take on the ise to blacklist a wired device？___
A. Locate the switch through which the device is connected and push an a cl restricting all access by the device
B. Issue a CoA request for the de vice's mac address to each access switch in the network
C. Revoke the device's certificate so it is unable to authenticate to the network
D. Add the device's MAc address to a list of black listed devices
【单选题】
Which type of firewall can perform deep packet inspection？___
A. packet-filtering firewall
B. stateless firewall
C. application firewall
D. personal firewall
【单选题】
What is the main purpose of Control Plane Policing？___
A. to prevent exhaustion of route-proce ssor resources
B. to organize the egress packet queues
C. to define traffic classes
D. to maintain the policy map
【单选题】
Which attack can be prevented by OSPF authentication？___
A. smurf attack
B. IP spoofing attack
C. denial of service attack
D. buffer overflow attack
【单选题】
What is the best definition of hairpinning？___
A. ingress traffic that traverses the outbound interface on a device
B. traffic that enters one interface on a device and that exits through another interface
C. traffic that enters and exits a device through the same interface
D. traffic that tunnels through a device interface
【单选题】
Which SNMPv3 security level provides authentication using HMAC with MD5， but does not use encryption？___
A. authPriv
B. authNo Priv
C. noAuthNoPriv
D. NoauthPriv
【单选题】
You have implemented a dynamic blacklist， using security intelligence to block illicit network activity. However， the blacklist contains several approved connections that users must access for usiness pur poses. Which action can you take to retain the blacklist while allowing users to access the approve d sites？___
A. Create a whitelist and manually add the approved addresses.
B. Disable the dynamic blacklist and deny the specif ic address on a whitelist while permitting the others
C. Edit the dynamic blacklist to remove the approved addresses
D. Disable the dynamic blacklist and create a static blacklist in its place
【单选题】
When connecting to an external resource,you must change a source IP address to use one IP address from a range of 207.165.201.1 to 207.165.1.30. Which option do you implement ?___
A. dynamic source NAT that uses an IP ad dress as a mapped source
B. static destination NAT that uses a subnet as a real de stination
C. dynamic source NAT that uses a range as a mapped source
D. static destination NAT that uses a subnet as a real source
【单选题】
Refer to the exhibit. 【nat（ins，any）dynamic interface】Which ty pe of NaT is configured on a Cisco ASA？___
A. dynamic NAT
B. source identity NAT
C. dynamic PAT
D. identity twice NAT
【单选题】
Which mitigation technology for web-based threats prevents the removal of confidential data from the network？___
A. CTA
B. DCA
C. AMP
D. DLP
