Free 350-801 Practice Test Questions 2026

SNMPv3

Explanation
SNMP (Simple Network Management Protocol) is used to monitor and manage network devices in Cisco collaboration deployments. Of the listed versions, SNMPv3 provides security features including authentication, message integrity, and encryption. By contrast, SNMPv1 and SNMPv2c use community strings and do not encrypt management traffic.

Correct Option

B. SNMPv3
SNMPv3 supports different security levels. To encrypt SNMP management traffic, configure the authPriv security level, which provides both authentication and privacy (encryption). Authentication alone (authNoPriv) does not encrypt the data.

Incorrect Options

- A. SNMPv1 —
Uses community strings and does not provide encryption.

- C. SNMPv2 —
The option is imprecise; the commonly deployed SNMPv2c version does not provide encryption.

- D. SNMPv2c —
Uses community-based security, with no built-in encryption of management traffic.

Reference
- Cisco — Secure Simple Network Management Protocol

Hardware MTP on Cisco IOS Software

Software MTP on Cisco Unified Communication Manager

Explanation
The key concept is transrating, which changes the packetization interval while keeping the same codec. Here, both endpoints use G.711 μ-law, but Endpoint A sends 20 ms packets and Endpoint B requires 30 ms packets. This is a packetization mismatch, not a codec mismatch, so the call needs an MTP capable of repacketizing the media. Cisco documentation explains that this operation requires DSP resources rather than a software-only MTP.

Correct Options

A. Hardware MTP on Cisco IOS Software
A hardware MTP on a Cisco IOS voice gateway uses DSP resources to normalize the different G.711 packetization intervals. It can receive 20 ms packets and send 30 ms packets while preserving the codec.

B. Software MTP on Cisco Unified Communications Manager
This is the other expected exam answer. Cisco documentation notes that Unified CM's terminology for MTP resources can differ from the implementation terminology used on gateways. In particular, Cisco describes certain hardware MTP resources as “software MTP” from the Unified CM perspective.

Incorrect Options

- C. Software MTP on Cisco IOS Software —
A software-only IOS MTP does not provide the DSP-based repacketization required for this packetization mismatch.

- D. Software transcoder on Cisco Unified Communications Manager —
Transcoding converts between codecs; both endpoints already use G.711 μ-law.

- E. Hardware transcoder on Cisco IOS Software —
A transcoder is primarily for codec conversion. The issue here is different packetization intervals, so an MTP is the appropriate resource.

Reference
- Cisco Unified Communications Manager and Cisco IOS Interoperability Guide — Media Resources

An network device is blocking TCP port 5060 from the SIP phone to the Cisco UCM.
This device must be reconfigured to allow traffic from the IP phone.

Explanation
The key concept is transrating, which changes the packetization interval while keeping the same codec. Here, both endpoints use G.711 μ-law, but Endpoint A sends 20 ms packets and Endpoint B requires 30 ms packets. This is a packetization mismatch, not a codec mismatch, so the call needs an MTP capable of repacketizing the media. Cisco documentation explains that this operation requires DSP resources rather than a software-only MTP.

Correct Options

A. Hardware MTP on Cisco IOS Software
A hardware MTP on a Cisco IOS voice gateway uses DSP resources to normalize the different G.711 packetization intervals. It can receive 20 ms packets and send 30 ms packets while preserving the codec.

B. Software MTP on Cisco Unified Communications Manager
This is the other expected exam answer. Cisco documentation notes that Unified CM's terminology for MTP resources can differ from the implementation terminology used on gateways. In particular, Cisco describes certain hardware MTP resources as “software MTP” from the Unified CM perspective.

Incorrect Options

- C. Software MTP on Cisco IOS Software —
A software-only IOS MTP does not provide the DSP-based repacketization required for this packetization mismatch.

- D. Software transcoder on Cisco Unified Communications Manager —
Transcoding converts between codecs; both endpoints already use G.711 μ-law.

- E. Hardware transcoder on Cisco IOS Software —
A transcoder is primarily for codec conversion. The issue here is different packetization intervals, so an MTP is the appropriate resource.

Reference
- Cisco Unified Communications Manager and Cisco IOS Interoperability Guide — Media Resources

Secure reverse proxy firewall travelsal connectivity

the ability for remote users and their devices to access and consume enterprise
collaboration applications and services

Explanation
Cisco Expressway Mobile and Remote Access (MRA) enables remote users and supported collaboration endpoints to access enterprise collaboration services without requiring a VPN. Expressway-C and Expressway-E work together to provide secure firewall traversal, while Unified CM continues to provide call control and related services. Cisco's official documentation describes both features in options B and E exactly as core MRA capabilities.

Correct Options

B. Secure reverse proxy firewall traversal connectivity
Expressway provides secure traversal through the enterprise firewall. Expressway-E acts as the external-facing edge, while Expressway-C establishes a secure traversal connection and proxies endpoint registration to Unified CM.

E. The ability for remote users and their devices to access and consume enterprise collaboration applications and services
MRA lets supported remote users access services such as voice, video, messaging, presence, and provisioning without first connecting through a VPN.

Incorrect Options

- A. VPN-based enterprise access for a subset of Cisco Unified IP Phone models —
MRA is designed to provide access without requiring a VPN; it is not a VPN-based access feature.

- C. Register third-party SIP or H.323 devices on Cisco UCM without requiring VPN —
Third-party SIP or H.323 endpoints may register to Expressway-C and interoperate with Unified CM through a SIP trunk, but this is distinct from the two core MRA features described in the question.

- D. Cisco IP Phones access the enterprise through VPN —
This describes VPN-based connectivity rather than MRA's secure traversal approach.

Reference
- Cisco Expressway — MRA Overview

Option A

Explanation
The users dial 9 followed by a 10-digit number, but the Cisco Unified Border Element (CUBE) sends all 11 digits to the PSTN provider. Since the provider accepts only 10 digits, CUBE must remove the leading 9 from the called number before forwarding the call. Cisco IOS supports this through voice translation rules and an outgoing translation profile applied to the appropriate dial peer.

Correct Option

A. Option A — assuming the exhibit's configuration matches the required leading-digit removal.

The required logic is equivalent to:

voice translation-rule 9

rule 1 /^9\(.*\)/ /\1/

!

voice translation-profile STRIP-9

translate called 9

!

dial-peer voice voip

translation-profile outgoing STRIP-9

For example, 92125551212 becomes 2125551212, so the PSTN receives the required 10 digits.

Incorrect Options
I can't reliably identify the exact differences among options B, C, and D without reading the configuration text in the exhibit. The correct configuration must remove only the leading 9 from the called number on the outbound CUBE dial peer.

Reference
- Cisco — Understand IOS and IOS XE Call Routing

XML

Explanation
Extensible Messaging and Presence Protocol (XMPP) is an open-standard protocol for real-time messaging and presence information. It is based on Extensible Markup Language (XML), which structures the messages and data exchanged between clients and servers. XMPP is widely associated with instant messaging and presence services, including collaboration platforms.

Correct Option

C. XML
XMPP uses XML streams and XML stanzas to exchange structured information, including messages, presence updates, and request-response data.

Incorrect Options

- A. JSON —
A common data-interchange format, but not the basis of XMPP.

- B. SIP —
A signaling protocol used to establish, modify, and terminate communication sessions.

- D. HTTP —
A web application protocol that can transport some XMPP implementations, but it is not the foundation of XMPP.

Reference
- IETF RFC 6120 — Extensible Messaging and Presence Protocol (XMPP): Core

Regions

Explanation
Cisco Unified Communications Manager (CUCM) uses Regions to determine the maximum audio and video bit rates for calls between endpoints. The region configuration defines bandwidth limits for calls within the same region and between different regions. CUCM uses these limits when negotiating the media capabilities of a call.

Correct Option

C. Regions
Administrators configure the Maximum Session Bit Rate for Video Calls in the Region configuration. This setting limits the maximum video bandwidth CUCM allows when endpoints establish a video call.

Navigation: Cisco Unified CM Administration → System → Region Information → Region. Configure the relevant region relationship and its maximum video call bit rate.

Incorrect Options

- A. Partitions —
Control which directory numbers and route patterns are reachable through a Calling Search Space; they do not set video bandwidth.

- B. Locations —
Manage the total bandwidth available across network links for Call Admission Control (CAC), rather than defining the maximum video bit rate for a region relationship.

- D. Transformations —
Modify calling or called party numbers; they do not control media bandwidth.

Reference
- Cisco Unified CM Feature Configuration Guide — Video Telephony

codec pass-through

Explanation
The correct answer is C. codec pass-through.

Cisco IOS DSP-farm profiles can provide Media Termination Point (MTP) or transcoding services. By configuring codec pass-through on a supported MTP or transcoding profile, the resource operates as a software MTP without performing codec conversion. This pass-through mode allows it to handle video and data media streams in addition to audio.

Correct Option

C. codec pass-through
This command is entered in DSP-farm profile configuration mode. It enables pass-through behavior so the resource can process video media streams instead of being limited to ordinary audio handling.

Incorrect Options

- A. maximum sessions hardware 50 —
Configures the maximum number of hardware sessions; it does not enable video pass-through.

- B. video codec h264 —
H.264 specifies a video codec for supported video conferencing or transcoding profiles, but it does not enable generic media pass-through.

- D. associate application Cisco Unified Border Element —
Associates an application with a resource profile; it does not enable video-stream processing.

Reference
- Cisco IOS Voice Command Reference — codec (DSP farm profile)

Define Cluster Fully Qualified Domain Name in Enterprise Parameters.

Explanation
Cisco Unified Communications Manager (CUCM) can accept SIP calls addressed using a URI such as sip:2001@cucmpub.cisco.com when the URI's host portion matches a configured Cluster Fully Qualified Domain Name (CFQDN). This parameter tells CUCM which domain names identify the cluster for incoming SIP URI routing. It is configured under Enterprise Parameters, not under individual server settings.

Correct Option

D. Define Cluster Fully Qualified Domain Name in Enterprise Parameters.
Navigate to Cisco Unified CM Administration → System → Enterprise Parameters → Cluster Fully Qualified Domain Name.

Add cucmpub.cisco.com to the configured FQDNs. CUCM can then recognize the host portion of the SIP URI as belonging to its cluster and route the numeric user portion (2001) according to the local dial plan.

Incorrect Options

- A. Define Cluster Fully Qualified Domain Name under Servers —
Server configuration identifies CUCM nodes and their server names; the cluster-wide URI domain is configured separately.
- B. Change the Destination Address to an FQDN on the SIP trunk —
The SIP trunk destination address controls where CUCM sends outbound trunk traffic, not whether it recognizes the host portion of an incoming SIP URI as its own cluster.

- C. Set SIPS URI Handling to True in CallManager Service Parameters —
This is not the setting that identifies the cluster domain for numeric SIP URI routing.

Reference
- Cisco Unified CM System Configuration Guide — Enterprise Parameters

UDP

Explanation
The Simple Network Management Protocol (SNMP) is an application-layer protocol commonly used to monitor and manage network devices. Its standard transport mapping uses User Datagram Protocol (UDP), which provides connectionless communication with low overhead. SNMP managers typically send requests to agents on UDP port 161, while SNMP traps are commonly sent to UDP port 162.

Correct Option

C. UDP
UDP is the standard transport protocol for SNMP in typical network-management deployments.

Incorrect Options

- A. HTTP —
Used for web communication, not the standard SNMP transport.

- B. XML —
A markup language for structuring data, not a transport protocol.

- D. SIP —
Used for establishing and managing communication sessions, such as voice and video calls.

Reference
- IETF RFC 3417 — Transport Mappings for SNMP

SOAP

XMPP

Explanation
Cisco IM and Presence uses SOAP and XMPP during Cisco Jabber sign-in. The login process has two stages: SOAP handles initial user authentication and retrieval of service configuration, while XMPP establishes the messaging and presence session. Cisco documentation confirms that Jabber communicates with IM and Presence using these two protocols during login.

Correct Options

B. SOAP
Simple Object Access Protocol (SOAP) is used during the initial login process to authenticate the user and retrieve configuration information from the IM and Presence service.

D. XMPP
Extensible Messaging and Presence Protocol (XMPP) establishes the client session used for instant messaging, presence updates, and roster management.

Incorrect Options
- A. TCP —
A transport protocol that can carry application traffic, but it is not the application-level authentication protocol being asked for.

- C. AXL —
Administrative XML (AXL) is used for configuration and database-related interactions with Unified CM. Although AXL/SOAP is used for synchronization between Unified CM and IM and Presence, AXL is not the second Jabber login protocol.

- E. QBE —
Query By Example is not one of the protocols used for Jabber authentication in this workflow.

Reference
- Cisco — Troubleshoot Jabber Login: Common Issues

_sip_udp.abc.com 60 IN SRV 1 60 cube1.abc.com

_sip_udp.abc.com 60 IN SRV 1 40 cube2.abc.com

Explanation
The correct answers are A and B. DNS SRV records support load balancing by using the priority and weight fields. To distribute calls between two Cisco Unified Border Element (CUBE) routers in a 60:40 ratio, both records must have the same priority, with weights of 60 and 40 respectively. Clients use the weights to select targets proportionally when priorities are equal.

Correct Options

A. _sip_udp.abc.com 60 IN SRV 1 60 cube1.abc.com

- Priority: 1

- Weight: 60

- Target: cube1.abc.com

B. _sip_udp.abc.com 60 IN SRV 1 40 cube2.abc.com

- Priority: 1

- Weight: 40

- Target: cube2.abc.com

With equal priority and weights totaling 100, the intended distribution is 60% of calls to CUBE 1 and 40% to CUBE 2.

Incorrect Options

- C. Reverses the priority and weight values and has a malformed hostname (cube1abc.com).
- D. Uses priority 2 for CUBE 1, so it would not share the same priority as the other router's record.

- E. Uses priority 3 for CUBE 2, making it a lower-preference target rather than a peer in the same load-balanced group.

Reference
- Cisco CUBE Configuration Guide — Load Balance Among SRV Records